GAS DISCHARGE TUBES (GDTS)
Littelfuse's GDTs (Gas Discharge Tubes) are placed in
front of, and in parallel with, sensitive telecom equipment
such as power lines, communication lines, signal lines
and data transmission lines to help protect them from
damage caused by transient surge voltages that may
result from lightning strikes and equipment switching
operations. These devices do not influence the signal in
normal operation. However, in the event of an overvoltage
surge, such as a lightning strike, the GDT switches to a low
impedance state and diverts the energy away from the
sensitive equipment.
Our GDTs offer a high level of surge protection, a broad
voltage range, low capacitance, and many form factors
including new surface mount devices, which makes them
suitable for applications such as Main Distribution Frame
(MDF) modules, high data-rate telecom applications (e.g.
ADSL, VDSL), and surge protection on power lines. Their low capacitance also results in less signal distortion. When
used in a coordinated circuit protection solution with PolySwitch devices, they can help equipment manufacturers meet
stringent safety regulatory standards.
BENEFITS
• Helps provide overvoltage fault protection against
damage caused by high energy surges
• Suitable for use in sensitive equipment due to
impulse sparkover response
• Suitable for high-frequency applications
• Highly reliable performance
• New surface-mount devices for automated
manufacturing
FEATURES
• RoHS compliant
• Halogen free
(refers to: Br≥900ppm, Cl≥900ppm, Br+Cl≥1500ppm)
• Wide range of voltages (75V-4000V)
• Wide range of form factors
(3mm, 5mm, 6mm, 7mm, 8mm diameter devices)
• Low capacitance and insertion loss
• Crowbar device with low arc voltage
• High accuracy spark-over voltages for high precision
designs
• Devices tested per ITU K.12 recommendations
• Various lead configurations and surface-mount
options
• Optional fail-short mechanism
• Non radioactive materials
• Devices certified to UL497B and UL1449
APPLICATIONS
• Telecommunications
- MDF modules, xDSL equipment, RF systems,
antenna, base stations
• Industrial and Consumer Electronics
- Power supplies, surge protectors, alarm systems,
irrigation systems
RoHS Compliant, ELV Compliant Specifications subject to change without notice. ©2016 Littelfuse, Inc. 73
Table G1 — Device Voltage Ratings, Surge Rating, Capacitance, Insulation Resistance
and Agency Approval for Two-Electrode Gas Discharge Tubes
DC
Sparkover
Voltage
Impulse
Sparkover
Voltage
Impulse
Discharge Current
Impulse
Withstanding
Voltage Capacitance
Insulation
Resistance UL Rating
Part Number
@ 100V/s
± 20% Tolerance @ 1kV/μs
8x20μs
10 Hits
(5 Hits Each
Polarity)
8x20μs
300 Hits
(150 Hits Each
Polarity)
10/700μs
10 Hits
(5 Times Each
Polarity) @1MHz @100VDC†UL497B #E179610
GTCS23-XXXM-R01-2
75* 600
1kA 100A 4kV <0.5pF 1,000 (MΩ)All Devices
90 600
140 600
150 600
GTCC23-XXXM-R01-2
200 700
1kA 100A 6kV‡<0.5pF 1,000 (MΩ)All Devices
230 700
300 900
350 1000
400 1000
* DCSO 60~105
† Devices <=150V measured @ 50VDC
‡ Effective output impedance: 40ohms
Figures G1-G2 — Typical Circuits for Gas Discharge Tubes
Figure G1 Figure G2
PolySwitch Device
Telecom
Line
(A) (A’)
(B) (B’)
PolySwitch Device
PolySwitch
Device
(A) (A’)
(B) (B’)
Protected
Equipment
Thyristor
Thyristors
GDT
Protected
Equipment
GDT
Telecom
Line
Tw o Electrode Devices for Ungrounded Circuits
Three Electrode Devices for Grounded Circuits
PolySwitch Device
Telecom
Line
(A) (A’)
(B) (B’)
PolySwitch Device
PolySwitch
Device
(A) (A’)
(B) (B’)
Protected
Equipment
Thyristor
Thyristors
GDT
Protected
Equipment
GDT
Telecom
Line
Tw o Electrode Devices for Ungrounded Circuits
Three Electrode Devices for Grounded Circuits
Part Number
DC
Sparkover
Voltage
Impulse
Sparkover Voltage
DC
Holdover
Voltage
On-State
Voltage
Impulse
Discharge
Current
Impulse
Life
AC Discharge
Current
(1s duration;
10 hits) Capacitance
Insulation
Resistance UL Rating
@ 100V/s
± 20%
Tolerance @ 100V/μs @ 1kV/μs
Per
ITU K.12
Nominal
(@1A)
(V)
8x20μs
10 Hits
10x1000μs
300 Hits @ 50 Hz @ 1MHz @ 100VDC
UL497B
#E179610
GTCX25-XXXM-R02 75 450 550 <52 20 2.5kA 100A 2.5Arms <1pF 10,000 (MΩ)All Devices
90 450 550 <52 20
GTCX26-XXXM-R05
140 500 600 <80 20
5kA 100A 5Arms <1pF 10,000 (MΩ)All Devices150 500 600 <80 20
200 600 700 <135 20
GTCX28-XXXM-R05
230 600 700 <135 20
5kA 100A 5Arms <1pF 10,000 (MΩ)All Devices
250 600 700 <135 20
260 700 800 <135 20
300 800 900 <150 20
GTCX28-XXXM-R10
350 900 1000 <150 20
10kA 100A 10Arms <1pF†† 10,000 (MΩ)All Devices
400 900 1000 <150 20
420 900 1000 <150 20
470 1050 115 0 <150 20
500 110 0 1200 <150 20
GTCX28-XXXM-R20** 550 1300 1400 <150 20 20kA 100A 20Arms <1.5pF 10,000 (MΩ)All Devices
600 1300 1400 <150 20
** GTCX28-XXXM-R20 parts only up to 350V
†† <1.2pF for 75V and 90V devices.
RoHS Compliant, ELV Compliant
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
74
Gas Discharge Tubes (GDTs)
Table G3 — Device Voltage Ratings, Surge Rating, Capacitance, Insulation Resistance
and Agency Approval for Three-Electrode Gas Discharge Tubes
Part Number
DC
Sparkover
Voltage
(A-E) (B-E)
Impulse
Sparkover Voltage
(A-E) (B-E)
DC
Holdover
Voltage
On-State
Voltage
Impulse
Discharge
Current
(A+B-E)
Impulse
Life
(A+B-E)
AC Discharge
Current
(1s duration;
10 hits)
(A+B-E) Capacitance
Insulation
Resistance UL Rating
@ 100V/s
± 20%
Tolerance @ 100V/μs @ 1kV/μs
Per
ITU K.12
Nominal
(@1A)
(V)
8x20μs
10 Hits
10x1000μs
300 Hits @ 50 Hz @ 1MHz @ 100VDC*
UL497B
#E179610
GTCX35-XXXM-R05 75 450 550 <52 20 5kA 100A 5Arms <1pF 10,000 (MΩ)All Devices
90 450 550 <52 20
GTCX36-XXXM-R05
140 500 600 <80 20
5kA 200A 5Arms <1pF 10,000 (MΩ)All Devices
150 500 600 <80 20
200 600 700 <135 20
GTCX36-XXXM-R10
230 600 700 <135 20
10kA 200A 10Arms <1pF 10,000 (MΩ)All Devices
250 600 700 <135 20
260 700 800 <135 20
300 800 900 <150 20
GTCX37-XXXM-R10
350 900 1000 <150 20
10kA 200A 10Arms <1pF 10,000 (MΩ)All Devices
400 900 1000 <150 20
420 900 1000 <150 20
470 1050 1150 <150 20
500 1100 1200 <150 20
GTCX38-XXXM-R10 550 1300 1400 <150 20 10kA 200A 10Arms <1pF 10,000 (MΩ)All Devices
600 1300 1400 <150 20
* Insulation resistance measured at 50V for devices less than 150V.
Insulation resistance measured at 250V for devices more than 500V.
Table G2 — Device Voltage Ratings, Surge Rating, Capacitance, Insulation Resistance
and Agency Approval for Two Electrode High-Voltage Gas Discharge
Tubes
Part Number
DC
Sparkover
Voltage
Impulse
Sparkover
Voltage Impulse Life
AC Discharge Current,
50Hz
Impulse
Discharge Current
8/20μs Capacitance UL Rating
@100V/s
± 20%
Tolerance @ 100V/μs
10/1000μs
100A
Multiple Hits
(1s Duration:
10 Hits)
Single Hit,
9 Cycles
10 Hits (5 Hits
Each Polarity) 1 Hit @ 1MHz
UL1449
#E332226
GTCA28-801M-R05 800 1400 300 times 5A N/A 5kA N/A <1pF 3
GTCA28-102M-R03 1000 1700 N/A 1A 5A 3kA 10kA <1pF 3
GTCA28-122M-R03 1200 1900 N/A 1A 5A 3kA 10kA <1pF 3
GTCA28-152L-R03 1500
(± 15%) 2200 N/A 1A 5A 3kA 10kA <1pF 3
GTCA28-212M-R03 2100 2700 N/A 1A 5A 3kA 10kA <1pF 3
GTCA28-242M-R03 2400 3300 N/A 1A 5A 3kA 10kA <1pF 3
GTCA28-252M-R03 2500 3500 N/A 1A 5A 3kA 10kA <1pF 3
GTCA28-272L-R03 2700
(± 15%)* 3700 300 Times†N/A N/A 3kA 10kA <1pF 3
GTCA28-302M-R03 3000 4000 N/A 1A 5A 3kA 10kA <1pF 3
GTCA28-312L-R03 3100
(± 15%)* 3700‡300 Times†N/A N/A 3kA 10kA <1pF 3
GTCA28-362M-R03 3600 4600 N/A 1A 5A 3kA 10kA <1pF 3
GTCA28-402M-R03 4000 5000 N/A 1A 5A 3kA 10kA <1pF 3
RoHS Compliant, ELV Compliant Specifications subject to change without notice. ©2016 Littelfuse, Inc. 75
Gas Discharge Tubes (GDTs)
ø3.0
4.5 ± 0.2 3.0 ± 0.2
3.2 ± 0.2
3.0 ± 0.2
2.7 ± 0.2
1. 01.0
4.5 ± 0.3
0.5 0.5
Surface-mount
(GTCS23-XXXM-R01)
Z1
X
Z2Y
Pad Layout - Surface-mount Devices
(GTCS23-XXXM-R01)
X Y Z1 Z2
Nom Nom Nom Nom
mm 3.0 2.0 2.0 2.0
in* 0.118 0.079 0.079 0.079
* The dimensions in inches are rounded approximations.
X Y Z1 Z2
Nom Nom Nom Nom
mm 3.5 2.7 2.0 2.0
in* 0.138 0.106 0.079 0.079
* The dimensions in inches are rounded approximations.
4.4 ± 0.2
(0.173 ± 0.008)
0.5
(0.020)REF
5.0 ± 0.2
(0.197 ± 0.008)
5.0 ± 0.2
(0.197 ± 0.008)
5.0 ± 0.2
(0.197 ± 0.008)
60.0 ± 4.0
(2.364 ± 0.158)
5.0 ± 0.2
(0.197 ± 0.008)
5.00 ± 0.15
(0.197 ± 0.006)
5.00 ± 0.15
(0.197 ± 0.006)
ø0.8
(0.032)REF
X
Z
Y
Surface-mount
(GTCS25-XXXM-R02)
4.4 ± 0.2
(0.173 ± 0.008)
0.5
(0.020)REF
5.0 ± 0.2
(0.197 ± 0.008)
5.0 ± 0.2
(0.197 ± 0.008)
5.0 ± 0.2
(0.197 ± 0.008)
60.0 ± 4.0
(2.364 ± 0.158)
5.0 ± 0.2
(0.197 ± 0.008)
5.00 ± 0.15
(0.197 ± 0.006)
5.00 ± 0.15
(0.197 ± 0.006)
ø0.8
(0.032)REF
X
Z
Y
4.4 ± 0.2
(0.173 ± 0.008)
0.5
(0.020)REF
5.0 ± 0.2
(0.197 ± 0.008)
5.0 ± 0.2
(0.197 ± 0.008)
5.0 ± 0.2
(0.197 ± 0.008)
60.0 ± 4.0
(2.364 ± 0.158)
5.0 ± 0.2
(0.197 ± 0.008)
5.00 ± 0.15
(0.197 ± 0.006)
5.00 ± 0.15
(0.197 ± 0.006)
ø0.8
(0.032)REF
X
Z
Y
No Leads
(GTCN25-XXXM-R02)†
4.4 ± 0.2
(0.173 ± 0.008)
0.5
(0.020)REF
5.0 ± 0.2
(0.197 ± 0.008)
5.0 ± 0.2
(0.197 ± 0.008)
5.0 ± 0.2
(0.197 ± 0.008)
60.0 ± 4.0
(2.364 ± 0.158)
5.0 ± 0.2
(0.197 ± 0.008)
5.00 ± 0.15
(0.197 ± 0.006)
5.00 ± 0.15
(0.197 ± 0.006)
ø0.8
(0.032)REF
X
Z
Y
Axial Leads
(GTCA25-XXXM-R02)
Pad Layout - Surface-mount Devices
(GTCS25-XXXM-R02)
X Y Z
Nom Nom Nom
mm 6.0 3.9 1.3
in* 0.236 0.154 0.051
* The dimensions in inches are rounded approximations.
† Parts with no leads are not solderable and are meant for insertion into magazine clips.
ø3.0
4.5 ± 0.2 3.0 ± 0.2
3.2 ± 0.2
3.0 ± 0.2
2.7 ± 0.2
1. 01.0
4.5 ± 0.3
0.5 0.5
Chip GDT
(GTCC23-XXXM-R01)
Z1
X
Z2Y
Pad Layout - Chip GDT Devices
(GTCC23-XXXM-R01)
Figures G3-G11 — Dimensions for Gas Discharge Tubes
Figure G3 — Two Electrode 3mm Product Dimensions
Figure G4 — Two Electrode 5mm Product Dimensions
RoHS Compliant, ELV Compliant
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
76
Gas Discharge Tubes (GDTs)
4.2 ± 0.2
(0.165 ± 0.008)
6.2 ± 0.2
(0.244 ± 0.008)
4.2 ± 0.2
(0.165 ± 0.008)
4.2 ± 0.2
(0.165 ± 0.008)
62.0 ± 2.0
(2.441 ± 0.079)
6.2 ± 0.2
(0.244 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
ø0.8
(0.032)REF
0.6
(0.024)REF
X
Z
Y
Surface-mount
(GTCS26-XXXM-R05)
Pad Layout - Surface-mount Devices
(GTCS26-XXXM-R05)
X
Z
Y
4.2 ± 0.2
(0.165 ± 0.008)
6.2 ± 0.2
(0.244 ± 0.008)
4.2 ± 0.2
(0.165 ± 0.008)
4.2 ± 0.2
(0.165 ± 0.008)
62.0 ± 2.0
(2.441 ± 0.079)
6.2 ± 0.2
(0.244 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
ø0.8
(0.032)REF
0.6
(0.024)REF
X
Z
Y
No Leads
(GTCN26-XXXM-R05)†
4.2 ± 0.2
(0.165 ± 0.008)
6.2 ± 0.2
(0.244 ± 0.008)
4.2 ± 0.2
(0.165 ± 0.008)
4.2 ± 0.2
(0.165 ± 0.008)
62.0 ± 2.0
(2.441 ± 0.079)
6.2 ± 0.2
(0.244 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
ø0.8
(0.032)REF
0.6
(0.024)REF
X
Z
Y
Axial Leads
(GTCA26-XXXM-R05)
* The dimensions in inches are rounded approximations.
† Parts with no leads are not solderable and are meant for insertion into magazine clips.
6.0 ± 0.2
(0.236 ± 0.008)
8.2 ± 0.2
(0.323 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
62.0 ± 4.0
(2.441 ± 0.157)
8.2 ± 0.2
(0.323 ± 0.008)
ø8.0 ± 0.2
(0.315 ± 0.008)
ø8.0 ± 0.2
(0.315 ± 0.008)
ø8.0 ± 0.2
(0.315 ± 0.008)
ø0.8
(0.032)REF
0.5
(0.02)REF
0.5
(0.02)REF
X
Z
Y
6.0 ± 0.2
(0.236 ± 0.008)
8.2 ± 0.2
(0.323 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
62.0 ± 4.0
(2.441 ± 0.157)
8.2 ± 0.2
(0.323 ± 0.008)
ø8.0 ± 0.2
(0.315 ± 0.008)
ø8.0 ± 0.2
(0.315 ± 0.008)
ø8.0 ± 0.2
(0.315 ± 0.008)
ø0.8
(0.032)REF
0.5
(0.02)REF
0.5
(0.02)REF
X
Z
Y
6.0 ± 0.2
(0.236 ± 0.008)
8.2 ± 0.2
(0.323 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
62.0 ± 4.0
(2.441 ± 0.157)
8.2 ± 0.2
(0.323 ± 0.008)
ø8.0 ± 0.2
(0.315 ± 0.008)
ø8.0 ± 0.2
(0.315 ± 0.008)
ø8.0 ± 0.2
(0.315 ± 0.008)
ø0.8
(0.032)REF
0.5
(0.02)REF
0.5
(0.02)REF
X
Z
Y
Surface-mount
(GTCS28-XXXM-R05, R10 & R20)
No Leads
(GTCN28-XXXM-R05, R10 & R20)†
Axial Leads
(GTCA28-XXXM-R05, R10 & R20)
Pad Layout - Surface-mount Devices
(GTCS28-XXXM-R05, R10 & R20)
X
Z
Y
* The dimensions in inches are rounded approximations.
† Parts with no leads are not solderable and are meant for insertion into magazine clips.
6 ± 0.2
62 ± 4
ø8 ± 0.2
ø0.8
Axial Leads
(GTCA28-XXXM-R0X)
X Y Z
Nom Nom Nom
mm 7.0 3.7 1.3
in* 0.276 0.146 0.051
X Y Z
Nom Nom Nom
mm 9.0 5.6 1.2
in* 0.354 0.22 0.047
Figure G5 — Two Electrode 6mm Product Dimensions
Figure G6 — Two Electrode 8mm Product Dimensions
Figure G7 — Two Electrode 8mm High Voltage Product Dimensions
Figures G3-G11 — Dimensions for Gas Discharge Tubes (Cont’d)
RoHS Compliant, ELV Compliant Specifications subject to change without notice. ©2016 Littelfuse, Inc. 77
Gas Discharge Tubes (GDTs)
3.8 ± 0.3
(0.151 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
ø0.8
(0.032)
3.8 ± 0.3
(0.151 ± 0.012)
ø0.8
(0.032)
X
Z1 Z2
Y1 Y2
ø5.0 ± 0.2
(0.197 ± 0.008)
MAX 5.9
(0.232)
MAX 5.9
(0.232)
13.0 ± 0.5
(0.512 ± 0.020)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
12.0 ± 0.5
(0.473 ± 0.020)
4.5
(0.177) REF
4.5
(0.177) REF
7.6 ± 0.2
(0.299 ± 0.008)
ø0.8
(0.032)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
3X 30.0 ± 2.0
(1.182 ± 0.079)
8.3 ± 0.3
(0.327 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
0.4
(0.016) REF 1. 6
(0.063)REF
7.6 ± 0.2
(0.299 ± 0.008)
0.4
(0.016) REF
1. 6
(0.063)REF
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
11.4 –2.0
(
0.449 –0.079
)
+0.0
+0.000
11.4 –2.0
(
0.449 –0.079
)
+0.0
+0.000
Axial Leaded with-FT
(GTCA35-XXXM-R05-FT)
3.8 ± 0.3
(0.151 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
ø0.8
(0.032)
3.8 ± 0.3
(0.151 ± 0.012)
ø0.8
(0.032)
X
Z1 Z2
Y1 Y2
ø5.0 ± 0.2
(0.197 ± 0.008)
MAX 5.9
(0.232)
MAX 5.9
(0.232)
13.0 ± 0.5
(0.512 ± 0.020)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
12.0 ± 0.5
(0.473 ± 0.020)
4.5
(0.177) REF
4.5
(0.177) REF
7.6 ± 0.2
(0.299 ± 0.008)
ø0.8
(0.032)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
3X 30.0 ± 2.0
(1.182 ± 0.079)
8.3 ± 0.3
(0.327 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
0.4
(0.016) REF 1. 6
(0.063)REF
7.6 ± 0.2
(0.299 ± 0.008)
0.4
(0.016) REF
1. 6
(0.063)REF
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
11.4 –2.0
(
0.449 –0.079
)
+0.0
+0.000
11.4 –2.0
(
0.449 –0.079
)
+0.0
+0.000
Axial Leaded
(GTCA35-XXXM-R05)
3.8 ± 0.3
(0.151 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
ø0.8
(0.032) 3.8 ± 0.3
(0.151 ± 0.012)
ø0.8
(0.032)
X
Z1 Z2
Y1 Y2
ø5.0 ± 0.2
(0.197 ± 0.008)
MAX 5.9
(0.232)
MAX 5.9
(0.232)
13.0 ± 0.5
(0.512 ± 0.020)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
12.0 ± 0.5
(0.473 ± 0.020)
4.5
(0.177) REF
4.5
(0.177) REF
7.6 ± 0.2
(0.299 ± 0.008)
ø0.8
(0.032)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
3X 30.0 ± 2.0
(1.182 ± 0.079)
8.3 ± 0.3
(0.327 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
0.4
(0.016) REF 1. 6
(0.063)REF
7.6 ± 0.2
(0.299 ± 0.008)
0.4
(0.016) REF
1. 6
(0.063)REF
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
11.4 –2.0
(
0.449 –0.079
)
+0.0
+0.000 11.4 –2.0
(
0.449 –0.079
)
+0.0
+0.000
No Leads with-FT
(GTCN35-XXXM-R05-FT)†
3.8 ± 0.3
(0.151 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
ø0.8
(0.032) 3.8 ± 0.3
(0.151 ± 0.012)
ø0.8
(0.032)
X
Z1 Z2
Y1 Y2
ø5.0 ± 0.2
(0.197 ± 0.008)
MAX 5.9
(0.232)
MAX 5.9
(0.232)
13.0 ± 0.5
(0.512 ± 0.020)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
12.0 ± 0.5
(0.473 ± 0.020)
4.5
(0.177) REF
4.5
(0.177) REF
7.6 ± 0.2
(0.299 ± 0.008)
ø0.8
(0.032)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
3X 30.0 ± 2.0
(1.182 ± 0.079)
8.3 ± 0.3
(0.327 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
0.4
(0.016) REF 1. 6
(0.063)REF
7.6 ± 0.2
(0.299 ± 0.008)
0.4
(0.016) REF
1. 6
(0.063)REF
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
11.4 –2.0
(
0.449 –0.079
)
+0.0
+0.000 11.4 –2.0
(
0.449 –0.079
)
+0.0
+0.000
T Leaded
(GTCT35-XXXM-R05)
Pad Layout - Surface-mount Devices
(GTCS35-XXXM-R05)
X Y1 Y2 Z1 Z2
Nom Nom Nom Nom Nom
mm 6.0 3.6 3.6 2.5 1.3
in* 0.236 0.142 0.142 0.098 0.051
3.8 ± 0.3
(0.151 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
ø0.8
(0.032) 3.8 ± 0.3
(0.151 ± 0.012)
ø0.8
(0.032)
X
Z1 Z2
Y1 Y2
ø5.0 ± 0.2
(0.197 ± 0.008)
MAX 5.9
(0.232)
MAX 5.9
(0.232)
13.0 ± 0.5
(0.512 ± 0.020)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
12.0 ± 0.5
(0.473 ± 0.020)
4.5
(0.177) REF
4.5
(0.177) REF
7.6 ± 0.2
(0.299 ± 0.008)
ø0.8
(0.032)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
3X 30.0 ± 2.0
(1.182 ± 0.079)
8.3 ± 0.3
(0.327 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
0.4
(0.016) REF 1. 6
(0.063)REF
7.6 ± 0.2
(0.299 ± 0.008)
0.4
(0.016) REF
1. 6
(0.063)REF
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
11.4 –2.0
(
0.449 –0.079
)
+0.0
+0.000 11.4 –2.0
(
0.449 –0.079
)
+0.0
+0.000
Surface-mount
(GTCS35-XXXM-R05)
3.8 ± 0.3
(0.151 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
ø0.8
(0.032) 3.8 ± 0.3
(0.151 ± 0.012)
ø0.8
(0.032)
X
Z1 Z2
Y1 Y2
ø5.0 ± 0.2
(0.197 ± 0.008)
MAX 5.9
(0.232)
MAX 5.9
(0.232)
13.0 ± 0.5
(0.512 ± 0.020)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
12.0 ± 0.5
(0.473 ± 0.020)
4.5
(0.177) REF
4.5
(0.177) REF
7.6 ± 0.2
(0.299 ± 0.008)
ø0.8
(0.032)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
3X 30.0 ± 2.0
(1.182 ± 0.079)
8.3 ± 0.3
(0.327 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
0.4
(0.016) REF 1. 6
(0.063)REF
7.6 ± 0.2
(0.299 ± 0.008)
0.4
(0.016) REF
1. 6
(0.063)REF
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
11.4 –2.0
(
0.449 –0.079
)
+0.0
+0.000 11.4 –2.0
(
0.449 –0.079
)
+0.0
+0.000
No Leads
(GTCN35-XXXM-R05)†
3.8 ± 0.3
(0.151 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
7.6 ± 0.2
(0.299 ± 0.008)
ø0.8
(0.032) 3.8 ± 0.3
(0.151 ± 0.012)
ø0.8
(0.032)
X
Z1 Z2
Y1 Y2
ø5.0 ± 0.2
(0.197 ± 0.008)
MAX 5.9
(0.232)
MAX 5.9
(0.232)
13.0 ± 0.5
(0.512 ± 0.020)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
12.0 ± 0.5
(0.473 ± 0.020)
4.5
(0.177) REF
4.5
(0.177) REF
7.6 ± 0.2
(0.299 ± 0.008)
ø0.8
(0.032)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
3X 30.0 ± 2.0
(1.182 ± 0.079)
8.3 ± 0.3
(0.327 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
0.4
(0.016) REF 1. 6
(0.063)REF
7.6 ± 0.2
(0.299 ± 0.008)
0.4
(0.016) REF
1. 6
(0.063)REF
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
11.4 –2.0
(
0.449 –0.079
)
+0.0
+0.000 11.4 –2.0
(
0.449 –0.079
)
+0.0
+0.000
* The dimensions in inches are rounded approximations.
† Parts with no leads are not solderable and are meant for insertion into magazine clips.
Dimensions in these drawings
are in millimeters (inches)
Figure G8 — Three Electrode 5mm Product Dimensions
Figures G3-G11 — Dimensions for Gas Discharge Tubes (Cont’d)
RoHS Compliant, ELV Compliant
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
78
Gas Discharge Tubes (GDTs)
8.2 ± 0.3
(0.323 ± 0.012)
8.2 ± 0.3
(0.323 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
8.2 ± 0.3
(0.323 ± 0.012)
9.2 ± 0.2
(0.362 ± 0.008)
4.7 ± 0.5
(0.185 ± 0.020)
4.7 ± 0.5
(0.185 ± 0.020) 3.8 ± 0.3
(0.150 ± 0.012)
ø0.8
(0.032) REF
ø0.8
(0.032) REF
0.75
(0.030) REF
ø0.8
(0.032) REF
X
Z1 Z2
Y1 Y2
ø6.0 ± 0.2
(0.236 ± 0.008)
13.0 ± 0.5
(0.512 ± 0.020)
MAX 7. 0
(0.276)
MAX 7. 0
(0.276)
MAX 7. 0
(0.276)
12.3 ± 0.5
(0.485 ± 0.020)
8.0 ± 0.5
(0.315 ± 0.020)
ø6.0 ± 0.2
(0.236 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
9.2 ± 0.2
(0.362 ± 0.008)
14.0 ± 0.5
(0.552 ± 0.020)
3.8 ± 0.3
(0.150 ± 0.012)
ø0.8
(0.032) REF
8.0 ± 0.2
(0.315 ± 0.008)
8.2 ± 0.2
(0.323 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
1. 0
(0.039) REF
8.2 ± 0.2
(0.323 ± 0.008)
1. 0
(0.039) REF
1. 2
(0.047) REF
1. 2
(0.047) REF
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
Axial Leaded with-FT
(GTCA36-XXXM-R05 and R10-FT)
Pad Layout - Surface-mount Devices
(GTCS36-XXXM-R05 and R10)
8.2 ± 0.3
(0.323 ± 0.012)
8.2 ± 0.3
(0.323 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
8.2 ± 0.3
(0.323 ± 0.012)
9.2 ± 0.2
(0.362 ± 0.008)
4.7 ± 0.5
(0.185 ± 0.020)
4.7 ± 0.5
(0.185 ± 0.020) 3.8 ± 0.3
(0.150 ± 0.012)
ø0.8
(0.032) REF
ø0.8
(0.032) REF
0.75
(0.030) REF
ø0.8
(0.032) REF
X
Z1 Z2
Y1 Y2
ø6.0 ± 0.2
(0.236 ± 0.008)
13.0 ± 0.5
(0.512 ± 0.020)
MAX 7. 0
(0.276)
MAX 7. 0
(0.276)
MAX 7. 0
(0.276)
12.3 ± 0.5
(0.485 ± 0.020)
8.0 ± 0.5
(0.315 ± 0.020)
ø6.0 ± 0.2
(0.236 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
9.2 ± 0.2
(0.362 ± 0.008)
14.0 ± 0.5
(0.552 ± 0.020)
3.8 ± 0.3
(0.150 ± 0.012)
ø0.8
(0.032) REF
8.0 ± 0.2
(0.315 ± 0.008)
8.2 ± 0.2
(0.323 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
1. 0
(0.039) REF
8.2 ± 0.2
(0.323 ± 0.008)
1. 0
(0.039) REF
1. 2
(0.047) REF
1. 2
(0.047) REF
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
8.2 ± 0.3
(0.323 ± 0.012)
8.2 ± 0.3
(0.323 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
8.2 ± 0.3
(0.323 ± 0.012)
9.2 ± 0.2
(0.362 ± 0.008)
4.7 ± 0.5
(0.185 ± 0.020)
4.7 ± 0.5
(0.185 ± 0.020)
3.8 ± 0.3
(0.150 ± 0.012)
ø0.8
(0.032) REF
ø0.8
(0.032) REF
0.75
(0.030) REF
ø0.8
(0.032) REF
X
Z1 Z2
Y1 Y2
ø6.0 ± 0.2
(0.236 ± 0.008)
13.0 ± 0.5
(0.512 ± 0.020)
MAX 7. 0
(0.276)
MAX 7. 0
(0.276)
MAX 7. 0
(0.276)
12.3 ± 0.5
(0.485 ± 0.020)
8.0 ± 0.5
(0.315 ± 0.020)
ø6.0 ± 0.2
(0.236 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
9.2 ± 0.2
(0.362 ± 0.008)
14.0 ± 0.5
(0.552 ± 0.020)
3.8 ± 0.3
(0.150 ± 0.012)
ø0.8
(0.032) REF
8.0 ± 0.2
(0.315 ± 0.008)
8.2 ± 0.2
(0.323 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
1. 0
(0.039) REF
8.2 ± 0.2
(0.323 ± 0.008)
1. 0
(0.039) REF
1. 2
(0.047) REF
1. 2
(0.047) REF
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
Axial Leaded
(GTCA36-XXXM-R05 and R10)
8.2 ± 0.3
(0.323 ± 0.012)
8.2 ± 0.3
(0.323 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
8.2 ± 0.3
(0.323 ± 0.012)
9.2 ± 0.2
(0.362 ± 0.008)
4.7 ± 0.5
(0.185 ± 0.020)
4.7 ± 0.5
(0.185 ± 0.020)
3.8 ± 0.3
(0.150 ± 0.012)
ø0.8
(0.032) REF
ø0.8
(0.032) REF
0.75
(0.030) REF
ø0.8
(0.032) REF
X
Z1 Z2
Y1 Y2
ø6.0 ± 0.2
(0.236 ± 0.008)
13.0 ± 0.5
(0.512 ± 0.020)
MAX 7. 0
(0.276)
MAX 7. 0
(0.276)
MAX 7. 0
(0.276)
12.3 ± 0.5
(0.485 ± 0.020)
8.0 ± 0.5
(0.315 ± 0.020)
ø6.0 ± 0.2
(0.236 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
9.2 ± 0.2
(0.362 ± 0.008)
14.0 ± 0.5
(0.552 ± 0.020)
3.8 ± 0.3
(0.150 ± 0.012)
ø0.8
(0.032) REF
8.0 ± 0.2
(0.315 ± 0.008)
8.2 ± 0.2
(0.323 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
1. 0
(0.039) REF
8.2 ± 0.2
(0.323 ± 0.008)
1. 0
(0.039) REF
1. 2
(0.047) REF
1. 2
(0.047) REF
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
Radial Leaded with-FT
(GTCR36-XXXM-R05 and R10-FT)
8.2 ± 0.3
(0.323 ± 0.012)
8.2 ± 0.3
(0.323 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
8.2 ± 0.3
(0.323 ± 0.012)
9.2 ± 0.2
(0.362 ± 0.008)
4.7 ± 0.5
(0.185 ± 0.020)
4.7 ± 0.5
(0.185 ± 0.020) 3.8 ± 0.3
(0.150 ± 0.012)
ø0.8
(0.032) REF
ø0.8
(0.032) REF
0.75
(0.030) REF
ø0.8
(0.032) REF
X
Z1 Z2
Y1 Y2
ø6.0 ± 0.2
(0.236 ± 0.008)
13.0 ± 0.5
(0.512 ± 0.020)
MAX 7. 0
(0.276)
MAX 7. 0
(0.276)
MAX 7. 0
(0.276)
12.3 ± 0.5
(0.485 ± 0.020)
8.0 ± 0.5
(0.315 ± 0.020)
ø6.0 ± 0.2
(0.236 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
9.2 ± 0.2
(0.362 ± 0.008)
14.0 ± 0.5
(0.552 ± 0.020)
3.8 ± 0.3
(0.150 ± 0.012)
ø0.8
(0.032) REF
8.0 ± 0.2
(0.315 ± 0.008)
8.2 ± 0.2
(0.323 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
1. 0
(0.039) REF
8.2 ± 0.2
(0.323 ± 0.008)
1. 0
(0.039) REF
1. 2
(0.047) REF
1. 2
(0.047) REF
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
Radial Leaded
(GTCR36-XXXM-R05 and R10)
8.2 ± 0.3
(0.323 ± 0.012)
8.2 ± 0.3
(0.323 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
8.2 ± 0.3
(0.323 ± 0.012)
9.2 ± 0.2
(0.362 ± 0.008)
4.7 ± 0.5
(0.185 ± 0.020)
4.7 ± 0.5
(0.185 ± 0.020) 3.8 ± 0.3
(0.150 ± 0.012)
ø0.8
(0.032) REF
ø0.8
(0.032) REF
0.75
(0.030) REF
ø0.8
(0.032) REF
X
Z1 Z2
Y1 Y2
ø6.0 ± 0.2
(0.236 ± 0.008)
13.0 ± 0.5
(0.512 ± 0.020)
MAX 7. 0
(0.276)
MAX 7. 0
(0.276)
MAX 7. 0
(0.276)
12.3 ± 0.5
(0.485 ± 0.020)
8.0 ± 0.5
(0.315 ± 0.020)
ø6.0 ± 0.2
(0.236 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
9.2 ± 0.2
(0.362 ± 0.008)
14.0 ± 0.5
(0.552 ± 0.020)
3.8 ± 0.3
(0.150 ± 0.012)
ø0.8
(0.032) REF
8.0 ± 0.2
(0.315 ± 0.008)
8.2 ± 0.2
(0.323 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
1. 0
(0.039) REF
8.2 ± 0.2
(0.323 ± 0.008)
1. 0
(0.039) REF
1. 2
(0.047) REF
1. 2
(0.047) REF
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
No Leads with-FT
(GTCN36-XXXM-R05 and R10-FT)†
8.2 ± 0.3
(0.323 ± 0.012)
8.2 ± 0.3
(0.323 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
8.2 ± 0.3
(0.323 ± 0.012)
9.2 ± 0.2
(0.362 ± 0.008)
4.7 ± 0.5
(0.185 ± 0.020)
4.7 ± 0.5
(0.185 ± 0.020) 3.8 ± 0.3
(0.150 ± 0.012)
ø0.8
(0.032) REF
ø0.8
(0.032) REF
0.75
(0.030) REF
ø0.8
(0.032) REF
X
Z1 Z2
Y1 Y2
ø6.0 ± 0.2
(0.236 ± 0.008)
13.0 ± 0.5
(0.512 ± 0.020)
MAX 7. 0
(0.276)
MAX 7. 0
(0.276)
MAX 7. 0
(0.276)
12.3 ± 0.5
(0.485 ± 0.020)
8.0 ± 0.5
(0.315 ± 0.020)
ø6.0 ± 0.2
(0.236 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
9.2 ± 0.2
(0.362 ± 0.008)
14.0 ± 0.5
(0.552 ± 0.020)
3.8 ± 0.3
(0.150 ± 0.012)
ø0.8
(0.032) REF
8.0 ± 0.2
(0.315 ± 0.008)
8.2 ± 0.2
(0.323 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
1. 0
(0.039) REF
8.2 ± 0.2
(0.323 ± 0.008)
1. 0
(0.039) REF
1. 2
(0.047) REF
1. 2
(0.047) REF
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
No Leads
(GTCN36-XXXM-R05 and R10)†
8.2 ± 0.3
(0.323 ± 0.012)
8.2 ± 0.3
(0.323 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
8.2 ± 0.3
(0.323 ± 0.012)
9.2 ± 0.2
(0.362 ± 0.008)
4.7 ± 0.5
(0.185 ± 0.020)
4.7 ± 0.5
(0.185 ± 0.020) 3.8 ± 0.3
(0.150 ± 0.012)
ø0.8
(0.032) REF
ø0.8
(0.032) REF
0.75
(0.030) REF
ø0.8
(0.032) REF
X
Z1 Z2
Y1 Y2
ø6.0 ± 0.2
(0.236 ± 0.008)
13.0 ± 0.5
(0.512 ± 0.020)
MAX 7. 0
(0.276)
MAX 7. 0
(0.276)
MAX 7. 0
(0.276)
12.3 ± 0.5
(0.485 ± 0.020)
8.0 ± 0.5
(0.315 ± 0.020)
ø6.0 ± 0.2
(0.236 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
9.2 ± 0.2
(0.362 ± 0.008)
14.0 ± 0.5
(0.552 ± 0.020)
3.8 ± 0.3
(0.150 ± 0.012)
ø0.8
(0.032) REF
8.0 ± 0.2
(0.315 ± 0.008)
8.2 ± 0.2
(0.323 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
1. 0
(0.039) REF
8.2 ± 0.2
(0.323 ± 0.008)
1. 0
(0.039) REF
1. 2
(0.047) REF
1. 2
(0.047) REF
6.0 ± 0.2
(0.236 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
6.0 ± 0.2
(0.236 ± 0.008)
Surface-mount
(GTCS36-XXXM-R05 and R10)
X Y1 Y2 Z1 Z2
Nom Nom Nom Nom Nom
mm 7.0 3.6 3.6 2.5 2.0
in* 0.276 0.142 0.142 0.098 0.079
* The dimensions in inches are rounded approximations.
† Parts with no leads are not solderable and are meant for insertion into magazine clips.
11.5 ± 0.5
(0.453 ± 0.020)
11.5 ± 0.5
(0.453 ± 0.020)
11.5 ± 0.5
(0.453 ± 0.020)
ø7.5 ± 0.2
(0.296 ± 0.008)
4.4 ± 0.3
(0.173 ± 0.012)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
ø1.0
(0.039) REF
ø7.5 ± 0.2
(0.296 ± 0.008)
7.0 ± 0.5
(0.276 ± 0.020)
7.0 ± 0.5
(0.276 ± 0.020)
ø7.5 ± 0.2
(0.296 ± 0.008)
2.0
(0.079)
1. 5
(0.059)
Radial Leaded
(GTCR37-XXXM-R10)
11.5 ± 0.5
(0.453 ± 0.020)
11.5 ± 0.5
(0.453 ± 0.020)
11.5 ± 0.5
(0.453 ± 0.020)
ø7.5 ± 0.2
(0.296 ± 0.008)
4.4 ± 0.3
(0.173 ± 0.012)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
ø1.0
(0.039) REF
ø7.5 ± 0.2
(0.296 ± 0.008)
7.0 ± 0.5
(0.276 ± 0.020)
7.0 ± 0.5
(0.276 ± 0.020)
ø7.5 ± 0.2
(0.296 ± 0.008)
2.0
(0.079)
1. 5
(0.059)
Radial Leaded with-FS
(GTCR37-XXXM-R10-FS2)
11.5 ± 0.5
(0.453 ± 0.020)
11.5 ± 0.5
(0.453 ± 0.020)
11.5 ± 0.5
(0.453 ± 0.020)
ø7.5 ± 0.2
(0.296 ± 0.008)
4.4 ± 0.3
(0.173 ± 0.012)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
ø1.0
(0.039) REF
ø7.5 ± 0.2
(0.296 ± 0.008)
7.0 ± 0.5
(0.276 ± 0.020)
7.0 ± 0.5
(0.276 ± 0.020)
ø7.5 ± 0.2
(0.296 ± 0.008)
2.0
(0.079)
1. 5
(0.059)
Dimensions in these drawings
are in millimeters (inches)
† Parts with no leads are not solderable and are meant for insertion into magazine clips.
Figure G9 — Three Electrode 6mm Product Dimensions
Figure G10 — Three Electrode 7mm Product Dimensions
Figures G3-G11 — Dimensions for Gas Discharge Tubes (Cont’d)
RoHS Compliant, ELV Compliant Specifications subject to change without notice. ©2016 Littelfuse, Inc. 79
Gas Discharge Tubes (GDTs)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
ø8.0 ± 0.2
(0.315 ± 0.008)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5
–1.5
(0.611
–0.059
)
+0
+0.000
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
MAX 9.2
(0.362)
MAX 10.8
(0.425)
MAX 9.2
(0.362)
0.5
(0.020)
3.0
(0.118)
1. 5
(0.059)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.2
(0.394 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø7.2 ± 0.2
(0.284 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
0.5
(0.020) 1. 5
(0.059)
0.5
(0.020) 1. 5
(0.059)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5 ± 0.5
(0.610 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
18.0 ± 0.5
(0.709 ± 0.020)
MAX 13.5
(0.489)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
ø8.0 ± 0.2
(0.315 ± 0.008) ø7. 5 ± 0.2
(0.296 ± 0.008)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
MAX 16.0
(0.630)
ø7.5 ± 0.2
(0.296 ± 0.008)
MAX 17.5
(0.689)
ø7.5 ± 0.2
(0.296 ± 0.008)
ø7.5 ± 0.2
(0.296 ± 0.008) X
Z1 Z2
Y1 Y2
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
15.0 ± 0.5
(0.591 ± 0.020)
10.0 ± 0.3
(0.394 ± 0.012)
3.0
(0.118)
8.0 ± 0.2
(0.315 ± 0.008)
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
Axial Leaded with-FT
(GTCA38-XXXM-R10-FT)
Pad Layout - Surface-mount Devices
(GTCS38-XXXM-R10)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
ø8.0 ± 0.2
(0.315 ± 0.008)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5
–1.5
(0.611
–0.059
)
+0
+0.000
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
MAX 9.2
(0.362)
MAX 10.8
(0.425)
MAX 9.2
(0.362)
0.5
(0.020)
3.0
(0.118)
1. 5
(0.059)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.2
(0.394 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø7.2 ± 0.2
(0.284 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
0.5
(0.020) 1. 5
(0.059)
0.5
(0.020) 1. 5
(0.059)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5 ± 0.5
(0.610 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
18.0 ± 0.5
(0.709 ± 0.020)
MAX 13.5
(0.489)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
ø8.0 ± 0.2
(0.315 ± 0.008) ø7. 5 ± 0.2
(0.296 ± 0.008)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
MAX 16.0
(0.630)
ø7.5 ± 0.2
(0.296 ± 0.008)
MAX 17.5
(0.689)
ø7.5 ± 0.2
(0.296 ± 0.008)
ø7.5 ± 0.2
(0.296 ± 0.008)
X
Z1 Z2
Y1 Y2
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
15.0 ± 0.5
(0.591 ± 0.020)
10.0 ± 0.3
(0.394 ± 0.012)
3.0
(0.118)
8.0 ± 0.2
(0.315 ± 0.008)
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
ø8.0 ± 0.2
(0.315 ± 0.008)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5
–1.5
(0.611
–0.059
)
+0
+0.000
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
MAX 9.2
(0.362)
MAX 10.8
(0.425)
MAX 9.2
(0.362)
0.5
(0.020)
3.0
(0.118)
1. 5
(0.059)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.2
(0.394 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø7.2 ± 0.2
(0.284 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
0.5
(0.020) 1. 5
(0.059)
0.5
(0.020) 1. 5
(0.059)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5 ± 0.5
(0.610 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
18.0 ± 0.5
(0.709 ± 0.020)
MAX 13.5
(0.489)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
ø8.0 ± 0.2
(0.315 ± 0.008) ø7. 5 ± 0.2
(0.296 ± 0.008)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
MAX 16.0
(0.630)
ø7.5 ± 0.2
(0.296 ± 0.008)
MAX 17.5
(0.689)
ø7.5 ± 0.2
(0.296 ± 0.008)
ø7.5 ± 0.2
(0.296 ± 0.008) X
Z1 Z2
Y1 Y2
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
15.0 ± 0.5
(0.591 ± 0.020)
10.0 ± 0.3
(0.394 ± 0.012)
3.0
(0.118)
8.0 ± 0.2
(0.315 ± 0.008)
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
Axial Leaded
(GTCA38-XXXM-R10)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
ø8.0 ± 0.2
(0.315 ± 0.008)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5
–1.5
(0.611
–0.059
)
+0
+0.000
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
MAX 9.2
(0.362)
MAX 10.8
(0.425)
MAX 9.2
(0.362)
0.5
(0.020)
3.0
(0.118)
1. 5
(0.059)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.2
(0.394 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø7.2 ± 0.2
(0.284 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
0.5
(0.020) 1. 5
(0.059)
0.5
(0.020) 1. 5
(0.059)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5 ± 0.5
(0.610 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
18.0 ± 0.5
(0.709 ± 0.020)
MAX 13.5
(0.489)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
ø8.0 ± 0.2
(0.315 ± 0.008) ø7. 5 ± 0.2
(0.296 ± 0.008)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
MAX 16.0
(0.630)
ø7.5 ± 0.2
(0.296 ± 0.008)
MAX 17.5
(0.689)
ø7.5 ± 0.2
(0.296 ± 0.008)
ø7.5 ± 0.2
(0.296 ± 0.008) X
Z1 Z2
Y1 Y2
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
15.0 ± 0.5
(0.591 ± 0.020)
10.0 ± 0.3
(0.394 ± 0.012)
3.0
(0.118)
8.0 ± 0.2
(0.315 ± 0.008)
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
Surface-mount
(GTCS38-XXXM-R10)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
ø8.0 ± 0.2
(0.315 ± 0.008)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5
–1.5
(0.611
–0.059
)
+0
+0.000
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
MAX 9.2
(0.362)
MAX 10.8
(0.425)
MAX 9.2
(0.362)
0.5
(0.020)
3.0
(0.118)
1. 5
(0.059)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.2
(0.394 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø7.2 ± 0.2
(0.284 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
0.5
(0.020) 1. 5
(0.059)
0.5
(0.020) 1. 5
(0.059)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5 ± 0.5
(0.610 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
18.0 ± 0.5
(0.709 ± 0.020)
MAX 13.5
(0.489)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
ø8.0 ± 0.2
(0.315 ± 0.008) ø7. 5 ± 0.2
(0.296 ± 0.008)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
MAX 16.0
(0.630)
ø7.5 ± 0.2
(0.296 ± 0.008)
MAX 17.5
(0.689)
ø7.5 ± 0.2
(0.296 ± 0.008)
ø7.5 ± 0.2
(0.296 ± 0.008) X
Z1 Z2
Y1 Y2
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
15.0 ± 0.5
(0.591 ± 0.020)
10.0 ± 0.3
(0.394 ± 0.012)
3.0
(0.118)
8.0 ± 0.2
(0.315 ± 0.008)
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
No Leads with-FT
(GTCN38-XXXM-R10-FT)†
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
ø8.0 ± 0.2
(0.315 ± 0.008)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5
–1.5
(0.611
–0.059
)
+0
+0.000
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
MAX 9.2
(0.362)
MAX 10.8
(0.425)
MAX 9.2
(0.362)
0.5
(0.020)
3.0
(0.118)
1. 5
(0.059)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.2
(0.394 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø7.2 ± 0.2
(0.284 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
0.5
(0.020) 1. 5
(0.059)
0.5
(0.020) 1. 5
(0.059)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5 ± 0.5
(0.610 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
18.0 ± 0.5
(0.709 ± 0.020)
MAX 13.5
(0.489)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
ø8.0 ± 0.2
(0.315 ± 0.008) ø7. 5 ± 0.2
(0.296 ± 0.008)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
MAX 16.0
(0.630)
ø7.5 ± 0.2
(0.296 ± 0.008)
MAX 17.5
(0.689)
ø7.5 ± 0.2
(0.296 ± 0.008)
ø7.5 ± 0.2
(0.296 ± 0.008) X
Z1 Z2
Y1 Y2
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
15.0 ± 0.5
(0.591 ± 0.020)
10.0 ± 0.3
(0.394 ± 0.012)
3.0
(0.118)
8.0 ± 0.2
(0.315 ± 0.008)
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
No Leads
(GTCN38-XXXM-R10)†
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
ø8.0 ± 0.2
(0.315 ± 0.008)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5
–1.5
(0.611
–0.059
)
+0
+0.000
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
MAX 9.2
(0.362)
MAX 10.8
(0.425)
MAX 9.2
(0.362)
0.5
(0.020)
3.0
(0.118)
1. 5
(0.059)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.2
(0.394 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø7.2 ± 0.2
(0.284 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
0.5
(0.020) 1. 5
(0.059)
0.5
(0.020) 1. 5
(0.059)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5 ± 0.5
(0.610 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
18.0 ± 0.5
(0.709 ± 0.020)
MAX 13.5
(0.489)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
ø8.0 ± 0.2
(0.315 ± 0.008) ø7. 5 ± 0.2
(0.296 ± 0.008)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
MAX 16.0
(0.630)
ø7.5 ± 0.2
(0.296 ± 0.008)
MAX 17.5
(0.689)
ø7.5 ± 0.2
(0.296 ± 0.008)
ø7.5 ± 0.2
(0.296 ± 0.008) X
Z1 Z2
Y1 Y2
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
15.0 ± 0.5
(0.591 ± 0.020)
10.0 ± 0.3
(0.394 ± 0.012)
3.0
(0.118)
8.0 ± 0.2
(0.315 ± 0.008)
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
Axial Leaded with-FS
(GTCA38-XXXM-R10-FS2)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
ø8.0 ± 0.2
(0.315 ± 0.008)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5
–1.5
(0.611
–0.059
)
+0
+0.000
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
MAX 9.2
(0.362)
MAX 10.8
(0.425)
MAX 9.2
(0.362)
0.5
(0.020)
3.0
(0.118)
1. 5
(0.059)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.2
(0.394 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø7.2 ± 0.2
(0.284 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
0.5
(0.020) 1. 5
(0.059)
0.5
(0.020) 1. 5
(0.059)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5 ± 0.5
(0.610 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
18.0 ± 0.5
(0.709 ± 0.020)
MAX 13.5
(0.489)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
ø8.0 ± 0.2
(0.315 ± 0.008)
ø7. 5 ± 0.2
(0.296 ± 0.008)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
MAX 16.0
(0.630)
ø7.5 ± 0.2
(0.296 ± 0.008)
MAX 17.5
(0.689)
ø7.5 ± 0.2
(0.296 ± 0.008)
ø7.5 ± 0.2
(0.296 ± 0.008) X
Z1 Z2
Y1 Y2
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
15.0 ± 0.5
(0.591 ± 0.020)
10.0 ± 0.3
(0.394 ± 0.012)
3.0
(0.118)
8.0 ± 0.2
(0.315 ± 0.008)
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
Axial Leaded with-FS
(GTCA38-XXXM-R10-FS)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
ø8.0 ± 0.2
(0.315 ± 0.008)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5
–1.5
(0.611
–0.059
)
+0
+0.000
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
MAX 9.2
(0.362)
MAX 10.8
(0.425)
MAX 9.2
(0.362)
0.5
(0.020)
3.0
(0.118)
1. 5
(0.059)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.2
(0.394 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø7.2 ± 0.2
(0.284 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
0.5
(0.020) 1. 5
(0.059)
0.5
(0.020) 1. 5
(0.059)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5 ± 0.5
(0.610 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
18.0 ± 0.5
(0.709 ± 0.020)
MAX 13.5
(0.489)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
ø8.0 ± 0.2
(0.315 ± 0.008)
ø7. 5 ± 0.2
(0.296 ± 0.008)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
MAX 16.0
(0.630)
ø7.5 ± 0.2
(0.296 ± 0.008)
MAX 17.5
(0.689)
ø7.5 ± 0.2
(0.296 ± 0.008)
ø7.5 ± 0.2
(0.296 ± 0.008) X
Z1 Z2
Y1 Y2
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
15.0 ± 0.5
(0.591 ± 0.020)
10.0 ± 0.3
(0.394 ± 0.012)
3.0
(0.118)
8.0 ± 0.2
(0.315 ± 0.008)
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
Radial Leaded with-FT
(GTCR38-XXXM-R10-FT)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
ø8.0 ± 0.2
(0.315 ± 0.008)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5
–1.5
(0.611
–0.059
)
+0
+0.000
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
MAX 9.2
(0.362)
MAX 10.8
(0.425)
MAX 9.2
(0.362)
0.5
(0.020)
3.0
(0.118)
1. 5
(0.059)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.2
(0.394 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø7.2 ± 0.2
(0.284 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
0.5
(0.020) 1. 5
(0.059)
0.5
(0.020) 1. 5
(0.059)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5 ± 0.5
(0.610 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
18.0 ± 0.5
(0.709 ± 0.020)
MAX 13.5
(0.489)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
ø8.0 ± 0.2
(0.315 ± 0.008) ø7. 5 ± 0.2
(0.296 ± 0.008)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
MAX 16.0
(0.630)
ø7.5 ± 0.2
(0.296 ± 0.008)
MAX 17.5
(0.689)
ø7.5 ± 0.2
(0.296 ± 0.008)
ø7.5 ± 0.2
(0.296 ± 0.008) X
Z1 Z2
Y1 Y2
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
15.0 ± 0.5
(0.591 ± 0.020)
10.0 ± 0.3
(0.394 ± 0.012)
3.0
(0.118)
8.0 ± 0.2
(0.315 ± 0.008)
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
Radial Leaded with-FS
(GTCR38-XXXM-R10-FS2)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
ø8.0 ± 0.2
(0.315 ± 0.008)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5
–1.5
(0.611
–0.059
)
+0
+0.000
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
MAX 9.2
(0.362)
MAX 10.8
(0.425)
MAX 9.2
(0.362)
0.5
(0.020)
3.0
(0.118)
1. 5
(0.059)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.2
(0.394 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø7.2 ± 0.2
(0.284 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
0.5
(0.020) 1. 5
(0.059)
0.5
(0.020) 1. 5
(0.059)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5 ± 0.5
(0.610 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
18.0 ± 0.5
(0.709 ± 0.020)
MAX 13.5
(0.489)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
ø8.0 ± 0.2
(0.315 ± 0.008) ø7. 5 ± 0.2
(0.296 ± 0.008)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
MAX 16.0
(0.630)
ø7.5 ± 0.2
(0.296 ± 0.008)
MAX 17.5
(0.689)
ø7.5 ± 0.2
(0.296 ± 0.008)
ø7.5 ± 0.2
(0.296 ± 0.008) X
Z1 Z2
Y1 Y2
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
15.0 ± 0.5
(0.591 ± 0.020)
10.0 ± 0.3
(0.394 ± 0.012)
3.0
(0.118)
8.0 ± 0.2
(0.315 ± 0.008)
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
Radial Leaded with-FS
(GTCR38-XXXM-R10-FS)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.3 ± 0.3
(0.406 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
ø8.0 ± 0.2
(0.315 ± 0.008)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF 4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5
–1.5
(0.611
–0.059
)
+0
+0.000
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
MAX 9.2
(0.362)
MAX 10.8
(0.425)
MAX 9.2
(0.362)
0.5
(0.020)
3.0
(0.118)
1. 5
(0.059)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.2
(0.394 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
ø7.2 ± 0.2
(0.284 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
7. 0 ± 0.5
(0.276 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
0.5
(0.020) 1. 5
(0.059)
0.5
(0.020) 1. 5
(0.059)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5 ± 0.5
(0.610 ± 0.020)
ø8.0 ± 0.2
(0.315 ± 0.008)
18.0 ± 0.5
(0.709 ± 0.020)
MAX 13.5
(0.489)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
ø8.0 ± 0.2
(0.315 ± 0.008) ø7. 5 ± 0.2
(0.296 ± 0.008)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
10.0 ± 0.3
(0.394 ± 0.012)
MAX 16.0
(0.630)
ø7.5 ± 0.2
(0.296 ± 0.008)
MAX 17.5
(0.689)
ø7.5 ± 0.2
(0.296 ± 0.008)
ø7.5 ± 0.2
(0.296 ± 0.008)
X
Z1 Z2
Y1 Y2
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
15.0 ± 0.5
(0.591 ± 0.020)
10.0 ± 0.3
(0.394 ± 0.012)
3.0
(0.118)
8.0 ± 0.2
(0.315 ± 0.008)
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
Radial Leaded
(GTCR38-XXXM-R10)
X Y1 Y2 Z1 Z2
Nom Nom Nom Nom Nom
mm 9.0 4.65 4.65 2.5 1.5
in* 0.354 0.183 0.183 0.098 0.059
* The dimensions in inches are rounded approximations.
† Parts with no leads are not solderable and are meant for insertion into magazine clips.
Dimensions in these drawings
are in millimeters (inches)
Figure G11 — Three Electrode 8mm Product Dimensions
Figures G3-G11 — Dimensions for Gas Discharge Tubes (Cont’d)
RoHS Compliant, ELV Compliant
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
80
Gas Discharge Tubes (GDTs)
Short Circuit Spring Plastic Foil
Ceramic Tube
Outer Electrode
Center Electrode
Fail-Short Mechanism — FT
Short Circuit Spring Solder Pellet
Ceramic Tube
Center Electrode
Outer Electrode
Fail-Short Mechanism — FS
Operation and Storage Temperatures for Gas Discharge Tubes
Fail-Short Mechanism for Gas Discharge Tubes
Operation Temperature Range Storage Temperature Range
Models without Fail-Short Mechanism : -40°C/+90°C Models without Fail-Short Mechanism : -40°C/+90°C
Models with Fail-Short Mechanism : -20°C/+65°C Models with Fail-Short Mechanism : -20°C/+65°C
Figure G12
Figure G13
The FS fail-short mechanism is a short circuit spring mounted onto a solder pellet located
at the center electrode of the gas tube. Under normal operating conditions, the pellet is
positioned to make the spring float above the outer electrodes, as shown in Figure G11 on
the previous page..
When a prolonged discharge event causes the gas tube temperature to reach the melting
point of the solder, the pellet softens allowing the short circuit spring to contact with both
outer electrodes (Figure G12). This process results in a permanent short circuit between all
three electrodes creating a low resistance path that conducts the fault current to ground
without generating a significant amount of heat.
The FT fail-short mechanism is a short circuit spring with a piece of plastic foil spot welded
onto the center electrode. Under normal operating conditions, the plastic foil makes the
spring insulated from the two outer electrodes.
When a prolonged discharge event causes the gas tube temperature to reach the melting
point of the plastic foil, the plastic foil melts allowing the short circuit spring to contact both
outer electrodes (Figure G13). This process results in a permanent short circuit between all
three electrodes creating a low resistance path that conducts the fault current to ground
without generating a significant amount of heat.
Packaging Information for Gas Discharge Tubes
Parts in Bulk Parts in Tape and Reel
Min Order Box Tape and Reel Box
Part Description Quantity Quantity Min Order Quantity Quantity
3mm 2Pole Surface-mount — — 2000 16000
5mm 2Pole No leads 5000 20000 — —
5mm 2Pole Leads 1000 5000 — —
5mm 2Pole Surface-mount — — 1500 12000
6mm 2Pole No leads 2000 10000 — —
6mm 2Pole Leads 1000 5000 — —
6mm 2Pole Surface-mount — — 750 6000
8mm 2pole No leads 2000 10000 — —
8mm 2Pole Leads 1000 5000 — —
8mm 2Pole Surface-mount — — 500 4000
5mm 3Pole No leads 2500 10000 — —
5mm 3Pole Leads 1000 5000 — —
5mm 3Pole Surface-mount — — 1000 8000
6mm 3Pole No leads 2500 10000 — —
6mm 3Pole Leads 1000 5000 — —
6mm 3Pole Surface-mount — — 750 4500
7mm 3Pole Leads 1000 5000 — —
8mm 3Pole No leads 1000 5000 — —
8mm 3Pole Leads 1000 5000 — —
8mm 3Pole Surface-mount — — 500 2500
RoHS Compliant, ELV Compliant Specifications subject to change without notice. ©2016 Littelfuse, Inc. 81
Gas Discharge Tubes (GDTs)
Installation for Gas Discharge Tubes
Care should be taken when installing GDTs equipped with fail-short mechanisms into arrester magazines, printed circuit boards, etc. Too much
downward pressure may force the short circuit spring through the thin insulation tube creating a shorted condition.
Solder Reflow Recommendations for Surface-mount GDT Devices
Surface-mount GDTs can be soldered using standard Pb-free reflow profiles.
Table G4 — Tape and Reel Specifications
Tape Dimension
EIA Mark
3mm devices (2 pole)
Dimension (mm)
5mm devices (2 pole)
Dimension (mm)
6mm devices (2 pole)
Dimension (mm)
8mm devices (2 pole)
Dimension (mm)
A03.40±0.10 4.9±0.10 6.70±0.10 8.60±0.10
B05.00±0.10 5.5±0.10 4.60±0.10 6.40±0.10
D01.50+0.10/-0 1.50+0.10/-0 1.50+0.10/-0 1.50+0.10/-0
D1—1.5 MIN — —
E11.75±0.10 1.75±0.10 1.75±0.10 1.75±0.10
E214.25±0.30 14.25±0.30 14.25±0.30 14.25±0.30
F7.50±0.10 7.50±0.10 7.50±0.10 7.50±0.10
P04.00±0.10 4.00±0.10 4.00±0.10 4.00±0.10
P18.00±0.10 8.00±0.10 12.00±0.10 12.00±0.10
P22.00±0.10 2.00±0.10 2.00±0.10 2.00±0.10
W16.00±0.30 16.00±0.30 16.00±0.30 16.00±0.30
TapeThickness
EIA Mark Dimension (mm) Dimension (mm) Dimension (mm) Dimension (mm)
B1————
K03.30±0.10 5.30±0.10 6.50±0.10 8.50±0.10
T0.35±0.05 0.40±0.05 0.35±0.05 0.50±0.05
T1————
T2————
Reel Dimension
EIA Mark Dimension (mm) Dimension (mm) Dimension (mm) Dimension (mm)
A330 330 330 330
B2.20±0.50 2.20±0.50 2.20±0.50 2.20±0.50
C13.00±0.20 13.00±0.20 13.00±0.20 13.00±0.20
D20.20±1.00 20.20±1.00 20.20±1.00 20.20±1.00
N100.00±1.00 100.00±1.00 100.00±1.00 100.00±1.00
W116.50±0.10 16.50±0.10 16.50±0.10 16.50±0.10
W221.10±02.00 21.10±02.00 21.10±02.00 21.10±02.00
P0
P2
FW
E2
E1
øD1
øD0
Embossment
User Direction of Unreeling
[10 pitches cumulative tolerance
on tape ±0.2mm]
B1 is for tape feeder reference only,
including draft concentric about B0
Center Lines of Cavity
Cover Tape
A0
P1
B0
B1
K0
T2
T1
T
Figure G14 — EIA Referenced Taped Component Dimensions
RoHS Compliant, ELV Compliant
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
82
Gas Discharge Tubes (GDTs)
Table G5 — Tape and Reel Specifications
Tape Dimension
EIA Mark
5mm devices (3 pole)
Dimension (mm)
6mm devices (3 pole)
Dimension (mm)
8mm devices (3 pole)
Dimension (mm)
A05.40±0.10 6.50±0.10 8.50±0.10
B08.00±0.10 8.60±0.10 10.60±0.10
D01.50+0.10/-0 1.50+0.10/-0 1.50+0.10/-0
D11.50(min) 1.50(min) —
E11.75±0.10 1.75±0.10 1.75±0.10
E214.25±0.30 22.25±0.30 22.25±0.30
F7.50±0.10 11.50±0.10 11.50±0.10
P04.00±0.10 4.00±0.10 4.00±0.10
P18.00±0.10 12.00±0.10 16.00±0.10
P22.00±0.10 2.00±0.10 2.00±0.10
W16.00±0.30 24.00±0.30 24.00±0.30
TapeThickness
EIA Mark Dimension (mm) Dimension (mm) Dimension (mm)
B1———
K05.70±0.10 6.30±0.10 8.40±0.10
T0.50±0.05 0.50±0.05 0.50±0.05
T1———
T2———
Reel Dimension
EIA Mark Dimension (mm) Dimension (mm) Dimension (mm)
A330 330 330
B2.20±0.50 2.20±0.50 2.20±0.50
C13.00±0.20 13.00±0.20 13.00±0.20
D20.20±1.00 20.20±1.00 20.20±1.00
N100.00±1.00 100.00±1.00 100.00±1.00
W116.50±0.10 24.50±0.10 24.50±0.10
W221.10±02.00 29.10±02.00 29.10±02.00
W3———
N
C
A
Full Radius
Access Hole at
Slot Location
(ø40mm min.)
If Present,
Tape Slot in Core
for Tape Start:
4.5 ± 0.05 Width x 10.0mm (min) Depth
W2 (Measured at Hub)
W3 (Includes Flange Distortion at Outer Edge)
B
W1 (Measured at Hub)
D(Hub Diameter,
Maximum Weight of Reel and Contents = 13.6kg)
(Arbor Hole Diameter)
Figure G15 — EIA Referenced Reel Dimensions
RoHS Compliant, ELV Compliant Specifications subject to change without notice. ©2016 Littelfuse, Inc. 83
Gas Discharge Tubes (GDTs)
GT C S 2 3 - 231 M - R 01 - FS - 2
Packaging
2 = Tape and Reel
Nothing = Tr ay Packaging
FS = Solder Pellet Fail Short Mechanism on To p
FS2 = Solder Pellet Fail Short Mechanism on Bottom
FT = Plastic Fail Short Mechanism on To p
Surge Rating
01 = 8x20µs 1kA, 10 Hits
02 = 8x20µs 2.5kA, 10 Hits
05 = 8x20µs 5kA, 10 Hits
10 = 8x20µs 10kA, 10 Hits
20 = 8x20µs 20kA, 10 Hits
Product Family Designator
R = R Series
Tolerance of 20% on DC Switch Voltage
DC Switch Voltage of 230V
23 x 10*1 = 230V, 23 x 10*2 = 2300V
Diameter
3 = 3mm
5 = 5mm
6 = 6mm
7 = 7.5mm
8 = 8mm
Number of Electrodes (2, 3)
Lead Configuration
A = Axial Leads
C = Chip Type
N = No Leads
R = Radial Leads
S = Surface-Mount
T = T-Shape Leads
Ceramic
Gas Tube
352 R 05 GN
Ye ar and Week of Manufacture
G = First Half of 2004
N = Week 14
Per Manufacturer’s Lot Number System
8x20µs 10 Hits Surge Current (05=5kA)
Product Family Designator
R = R Series
Voltage Designator (35 = 350V, 352=3500V)
Manufacturer’s Mark
Marking Reference Guide — Example
NOTE: GTCS23-XXXM-R01 and GTCC23-XXXM-R01 parts available only in surface-mount and tape and reel packaging.
NOTES: GTCS23-XXXM-R01 and GTCC23-XXXM-R01 parts will have no marking. Devices with no leads (GTCNxx-xxxx-xx) are not able
to be soldered as their electrodes are nickel plated. They should be installed by insertion into a magazine clip.
Example Part Number
Notice:
Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining
or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may
result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall
be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising
out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject
to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse.
Part Numbering System for Gas Discharge Tubes
RoHS Compliant, ELV Compliant
Specifications subject to change without notice. ©2016 Littelfuse, Inc.
84
Gas Discharge Tubes (GDTs)