Gas Discharge Tubes
RoHS Compliant, ELV Compliant HF Halogen Free 95
9
TE Circuit Protection’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 make 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.
• 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
• 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
• Telecommunications
- MDF modules, xDSL equipment, RF systems,
antenna, base stations
Benefits Features
Applications
• Industrial and Consumer Electronics
- Power supplies, surge protectors, alarm systems,
irrigation systems
Gas Discharge Tubes (GDTs)
2013_CP_S09-GDT.indd 95 8/3/13 11:05 AM
RoHS Compliant, ELV Compliant HF Halogen Free
96
9
Table G1 Device Voltage Ratings, Surge Rating, Capacitance, Insulation Resistance and
Agency Approval for Two-Electrode Gas Discharge Tubes (GDTs)
Part Number
DC
Sparkover
Voltage
Impulse
Sparkover
Voltage
Impulse
Discharge Current
Impulse
Withstanding
Voltage Capacitance
Insulation
Resistance UL Rating
@ 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*
90
140
150
200
230
300
350
400
600
600
600
600
700
700
900
1000
1000
1kA 100A 4kV <0.5pF 1,000 (MΩ) All Devices
GTCC23-XXXM-R01-2 1kA 100A 6kV‡<0.5pF 1,000 (MΩ) All Devices
* DCSO 60~105
† Devices <=150V measured @ 50VDC
‡ Effective output impedance: 40ohms
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
90
140
150
200
230
250
260
300
350
400
420
470
500
550
600
450
450
500
500
600
600
600
700
800
900
900
900
1050
1100
1300
1300
550
550
600
600
700
700
700
800
900
1000
1000
1000
1150
1200
1400
1400
<52
<52
<80
<80
<135
<135
<135
<135
<150
<150
<150
<150
<150
<150
<150
<150
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
2.5kA 100A 2.5Arms <1pF 10,000 (MΩ) All Devices
GTCX26-XXXM-R05 5kA 100A 5Arms <1pF 10,000 (MΩ) All Devices
GTCX28-XXXM-R05 5kA 100A 5Arms <1pF 10,000 (MΩ) All Devices
GTCX28-XXXM-R10 10kA 100A 10Arms <1pF†† 10,000 (MΩ) All Devices
GTCX28-XXXM-R20** 20kA 100A 20Arms <1.5pF 10,000 (MΩ) All Devices
** GTCX28-XXXM-R20 parts only up to 350V
†† <1.2pF for 75V and 90V devices.
Figures G1-G2 Typical Circuits for Gas Discharge Tubes (GDTs)
PolySwitch Device
Telecom
Line
(A) (A’)
(B) (B’)
Protected
Equipment
Thyristor
GDT
Two Electrode Devices for Ungrounded Circuits
Figure G1
PolySwitch Device
PolySwitch
Device
(A) (A’)
(B) (B’)
Thyristors
Protected
Equipment
GDT
Telecom
Line
Three Electrode Devices for Grounded Circuits
Figure G2
2013_CP_S09-GDT.indd 96 8/3/13 11:05 AM
Gas Discharge Tubes
RoHS Compliant, ELV Compliant HF Halogen Free 97
9
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
90
140
150
200
230
250
260
300
350
400
420
470
500
550
600
450
450
500
500
600
600
600
700
800
900
900
900
1050
1100
1300
1300
550
550
600
600
700
700
700
800
900
1000
1000
1000
1150
1200
1400
1400
<52
<52
<80
<80
<135
<135
<135
<135
<150
<150
<150
<150
<150
<150
<150
<150
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
5kA 100A 5Arms <1pF 10,000 (MΩ) All Devices
GTCX36-XXXM-R05 5kA 200A 5Arms <1pF 10,000 (MΩ) All Devices
GTCX36-XXXM-R10 10kA 200A 10Arms <1pF 10,000 (MΩ) All Devices
GTCX37-XXXM-R10 10kA 200A 10Arms <1pF 10,000 (MΩ) All Devices
GTCX38-XXXM-R10 10kA 200A 10Arms <1pF 10,000 (MΩ) All Devices
* 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 (GDTs)
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
Note: Insulation resistance: $10,000MΩ (all parts measured @ 1000VDC, except 800V/1000V/1200V @250VDC; 1500V/2100V @ 500VDC)
* DC Sparkover Voltage measured at 5kV/s
† Measured with 8/20µs,100A impulse
‡ Measured at 1000V/µs
Table G3 Device Voltage Ratings, Surge Rating, Capacitance, Insulation Resistance and
Agency Approval for Three-Electrode Gas Discharge Tubes (GDTs)
2013_CP_S09-GDT.indd 97 8/3/13 11:05 AM
RoHS Compliant, ELV Compliant HF Halogen Free
98
9
ø3.0
4.5 ± 0.2 3.0 ± 0.2
3.0 ± 0.2
1. 0 1. 0
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.
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)
Surface-mount
(GTCS25-XXXM-R02)
X
Z
Y
5.0 ± 0.2
(0.197 ± 0.008)
5.00 ± 0.15
(0.197 ± 0.006)
No Leads
(GTCN25-XXXM-R02)†
5.0 ± 0.2
(0.197 ± 0.008)
60.0 ± 4.0
(2.364 ± 0.158)
5.00 ± 0.15
(0.197 ± 0.006)
ø0.8
(0.032)REF
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* 0.197 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.
Figures G3-G11 Dimensions for Gas Discharge Tubes (GDTs)
Figure G3 Two Electrode 3mm Product Dimensions
3.2 ± 0.2
2.7 ± 0.2
4.5 ± 0.3
0.5 0.5
Chip GDT
(GTCC23-XXXM-R01)
Z1
X
Z2Y
Pad Layout - Chip GDT Devices
(GTCC23-XXXM-R01)
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.
Figure G4 Two Electrode 5mm Product Dimensions
2013_CP_S09-GDT.indd 98 8/3/13 11:05 AM
Gas Discharge Tubes
RoHS Compliant, ELV Compliant HF Halogen Free 99
9
4.2 ± 0.2
(0.165 ± 0.008)
6.2 ± 0.2
(0.244 ± 0.008)
6.2 ± 0.2
(0.244 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
0.6
(0.024)REF
Surface-mount
(GTCS26-XXXM-R05)
Pad Layout - Surface-mount Devices
(GTCS26-XXXM-R05)
X Y Z
Nom Nom Nom
mm 7.0 3.7 1.3
in* 0.276 0.146 0.051
X
Z
Y
4.2 ± 0.2
(0.165 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
No Leads
(GTCN26-XXXM-R05)†
4.2 ± 0.2
(0.165 ± 0.008)
62.0 ± 2.0
(2.441 ± 0.079)
ø6.0 ± 0.2
(0.236 ± 0.008)
ø0.8
(0.032)REF
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.
Figures G3-G11 Dimensions for Gas Discharge Tubes (GDTs) Cont’d
Figure G5 Two Electrode 6mm Product Dimensions
Figure G6 Two Electrode 8mm Product Dimensions
6.0 ± 0.2
(0.236 ± 0.008)
8.2 ± 0.2
(0.323 ± 0.008)
8.2 ± 0.2
(0.323 ± 0.008)
ø8.0 ± 0.2
(0.315 ± 0.008)
0.5
(0.02)REF
6.0 ± 0.2
(0.236 ± 0.008)
ø8.0 ± 0.2
(0.315 ± 0.008)
0.5
(0.02)REF
6.0 ± 0.2
(0.236 ± 0.008)
62.0 ± 4.0
(2.441 ± 0.157)
ø8.0 ± 0.2
(0.315 ± 0.008)
ø0.8
(0.032)REF
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 Y Z
Nom Nom Nom
mm 9.0 5.6 1.2
in* 0.354 0.22 0.047
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.
Figure G7 Two Electrode 8mm High Voltage Product Dimensions
6 ± 0.2
62 ± 4
ø8 ± 0.2
ø0.8
Axial Leads
(GTCA28-XXXM-R0X)
2013_CP_S09-GDT.indd 99 8/3/13 11:05 AM
RoHS Compliant, ELV Compliant HF Halogen Free
100
9
3.8 ± 0.3
(0.151 ± 0.012)
8.3 ± 0.3
(0.327 ± 0.012)
7.6 ± 0.2
(0.299 ± 0.008)
ø0.8
(0.032)
ø5.0 ± 0.2
(0.197 ± 0.008)
13.0 ± 0.5
(0.512 ± 0.020)
4.5
(0.177) REF
11.4 –2.0
(
0.449 –0.079
)
+0.0
+0.000
Axial Leaded with-FT
(GTCA35-XXXM-R05-FT)
7.6 ± 0.2
(0.299 ± 0.008)
3.8 ± 0.3
(0.151 ± 0.012)
ø0.8
(0.032)
ø5.0 ± 0.2
(0.197 ± 0.008)
12.0 ± 0.5
(0.473 ± 0.020)
4.5
(0.177) REF
11.4 –2.0
(
0.449 –0.079
)
+0.0
+0.000
Axial Leaded
(GTCA35-XXXM-R05)
7.6 ± 0.2
(0.299 ± 0.008)
MAX 5.9
(0.232)
ø5.0 ± 0.2
(0.197 ± 0.008)
8.3 ± 0.3
(0.327 ± 0.012)
No Leads with-FT
(GTCN35-XXXM-R05-FT)†
7.6 ± 0.2
(0.299 ± 0.008)
ø0.8
(0.032)
ø5.0 ± 0.2
(0.197 ± 0.008)
3X 30.0 ± 2.0
(1.182 ± 0.079)
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
X
Z1 Z2
Y1 Y2
Surface-mount
(GTCS35-XXXM-R05)
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)
No Leads
(GTCN35-XXXM-R05)†
7.6 ± 0.2
(0.299 ± 0.008)
ø5.0 ± 0.2
(0.197 ± 0.008)
* 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)
Figures G3-G11 Dimensions for Gas Discharge Tubes (GDTs) Cont’d
Figure G8 Three Electrode 5mm Product Dimensions
2013_CP_S09-GDT.indd 100 8/3/13 11:05 AM
Gas Discharge Tubes
RoHS Compliant, ELV Compliant HF Halogen Free 101
9
8.2 ± 0.3
(0.323 ± 0.012)
4.7 ± 0.5
(0.185 ± 0.020)
ø0.8
(0.032) REF
ø6.0 ± 0.2
(0.236 ± 0.008)
13.0 ± 0.5
(0.512 ± 0.020)
8.0 ± 0.2
(0.315 ± 0.008)
Axial Leaded with-FT
(GTCA36-XXXM-R05 and R10-FT)
Pad Layout - Surface-mount Devices
(GTCS36-XXXM-R05 and R10)
X
Z1 Z2
Y1 Y2
4.7 ± 0.5
(0.185 ± 0.020)
ø0.8
(0.032) REF
12.3 ± 0.5
(0.485 ± 0.020)
8.0 ± 0.2
(0.315 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
Axial Leaded
(GTCA36-XXXM-R05 and R10)
8.2 ± 0.3
(0.323 ± 0.012)
9.2 ± 0.2
(0.362 ± 0.008)
3.8 ± 0.3
(0.150 ± 0.012)
ø0.8
(0.032) REF
MAX 7.0
(0.276)
8.0 ± 0.5
(0.315 ± 0.020)
ø6.0 ± 0.2
(0.236 ± 0.008)
Radial Leaded with-FT
(GTCR36-XXXM-R05 and R10-FT)
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
Radial Leaded
(GTCR36-XXXM-R05 and R10)
8.2 ± 0.3
(0.323 ± 0.012)
MAX 7.0
(0.276)
8.0 ± 0.2
(0.315 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
No Leads with-FT
(GTCN36-XXXM-R05 and R10-FT)†
0.75
(0.030) REF
8.0 ± 0.2
(0.315 ± 0.008)
ø6.0 ± 0.2
(0.236 ± 0.008)
No Leads
(GTCN36-XXXM-R05 and R10)†
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 ± 0.2
(0.323 ± 0.008)
1. 0
(0.039) REF
1. 2
(0.047) REF
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)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
ø7.5 ± 0.2
(0.296 ± 0.008)
7.0 ± 0.5
(0.276 ± 0.020)
Radial Leaded
(GTCR37-XXXM-R10)
11.5 ± 0.5
(0.453 ± 0.020)
ø7
.5 ± 0.2
(0.296 ± 0.008)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
7.0 ± 0.5
(0.276 ± 0.020)
Radial Leaded with-FS
(GTCR37-XXXM-R10-FS2)
11.5 ± 0.5
(0.453 ± 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)
Figures G3-G11 Dimensions for Gas Discharge Tubes (GDTs) Cont’d
Figure G9 Three Electrode 6mm Product Dimensions
Figure G10 Three Electrode 7mm Product Dimensions
† Parts with no leads are not solderable and are meant for insertion into magazine clips.
2013_CP_S09-GDT.indd 101 8/3/13 11:05 AM
RoHS Compliant, ELV Compliant HF Halogen Free
102
9
10.3 ± 0.3
(0.406 ± 0.012)
ø8.0 ± 0.2
(0.315 ± 0.008)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
15.5
–1.5
(0.611
–0.059
)
+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
Axial Leaded with-FT
(GTCA38-XXXM-R10-FT)
Pad Layout - Surface-mount Devices
(GTCS38-XXXM-R10)
X
Z1 Z2
Y1 Y2
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
8.0 ± 0.2
(0.315 ± 0.008)
4.5 –0
(
0.177 –0.000
)
+1.5
+0.059
15.0 ± 0.5
(0.591 ± 0.020)
13.4 –2.0
(
0.528 –0.079
)
+0.0
+0.000
Axial Leaded
(GTCA38-XXXM-R10)
10.0 ± 0.3
(0.394 ± 0.012)
8.0 ± 0.2
(0.315 ± 0.008)
ø8.0 ± 0.2
(0.315 ± 0.008)
0.5
(0.020) 1. 5
(0.059)
Surface-mount
(GTCS38-XXXM-R10)
10.3 ± 0.3
(0.406 ± 0.012)
MAX 9.2
(0.362)
10.0 ± 0.3
(0.394 ± 0.012)
3.0
(0.118)
8.0 ± 0.2
(0.315 ± 0.008)
No Leads with-FT
(GTCN38-XXXM-R10-FT)†
10.0 ± 0.2
(0.394 ± 0.008)
ø7.2 ± 0.2
(0.284 ± 0.008)
8.0 ± 0.2
(0.315 ± 0.008)
0.5
(0.020) 1. 5
(0.059)
No Leads
(GTCN38-XXXM-R10)†
MAX 10.8
(0.425)
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)
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)
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
ø8.0 ± 0.2
(0.315 ± 0.008)
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)
7. 0 ± 0.5
(0.276 ± 0.020)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
ø7.5 ± 0.2
(0.296 ± 0.008)
10.0 ± 0.3
(0.394 ± 0.012)
MAX 16.0
(0.630)
Radial Leaded with-FT
(GTCR38-XXXM-R10-FT)
7. 0 ± 0.5
(0.276 ± 0.020)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
10.0 ± 0.3
(0.394 ± 0.012) ø7
.5 ± 0.2
(0.296 ± 0.008)
Radial Leaded with-FS
(GTCR38-XXXM-R10-FS2)
7. 0 ± 0.5
(0.276 ± 0.020)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
10.0 ± 0.3
(0.394 ± 0.012)
MAX 17.5
(0.689)
ø7.5 ± 0.2
(0.296 ± 0.008)
Radial Leaded with-FS
(GTCR38-XXXM-R10-FS)
7. 0 ± 0.5
(0.276 ± 0.020)
4.4 ± 0.3
(0.173 ± 0.012)
ø1.0
(0.039) REF
10.0 ± 0.3
(0.394 ± 0.012)
ø7
.5 ± 0.2
(0.296 ± 0.008)
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.
Figures G3-G11 Dimensions for Gas Discharge Tubes (GDTs) Cont’d
Figure G11 Three Electrode 8mm Product Dimensions
Dimensions in these drawings
are in millimeters (inches)
2013_CP_S09-GDT.indd 102 8/3/13 11:05 AM
Gas Discharge Tubes
RoHS Compliant, ELV Compliant HF Halogen Free 103
9
Fail-Short Mechanism for Gas Discharge Tubes (GDTs)
Fail-Short Mechanism - FS
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
Fail-Short Mechanism - FT
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.
Short Circuit Spring Solder Pellet
Ceramic Tube
Center Electrode
Outer Electrode
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.
Short Circuit Spring Plastic Foil
Ceramic Tube
Outer Electrode
Center Electrode
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
Parts in Bulk Parts in Tape and Reel
Operation and Storage Temperatures for Gas Discharge Tubes (GDTs)
Packaging Information for Gas Discharge Tubes (GDTs)
Figure G12
Figure G13
2013_CP_S09-GDT.indd 103 8/3/13 11:05 AM
RoHS Compliant, ELV Compliant HF Halogen Free
104
9
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.
Installation for Gas Discharge Tubes (GDTs)
Surface-mount GDTs can be soldered using standard Pb-free reflow profiles.
Solder Reflow Recommendations for Surface-mount GDT Devices
Table G4 Tape and Reel Specifications for GDT Devices
Tape Dimension 3mm devices (2 pole) 5mm devices (2 pole) 6mm devices (2 pole) 8mm devices (2 pole)
EIA Mark Dimension (mm) Dimension (mm) Dimension (mm) Dimension (mm)
A0 3.40±0.10 4.9±0.10 6.70±0.10 8.60±0.10
B0 5.00±0.10 5.5±0.10 4.60±0.10 6.40±0.10
D0 1.50+0.10/-0 1.50+0.10/-0 1.50+0.10/-0 1.50+0.10/-0
D1 – 1.5 MIN – –
E1 1.75±0.10 1.75±0.10 1.75±0.10 1.75±0.10
E2 14.25±0.30 14.25±0.30 14.25±0.30 14.25±0.30
F 7.50±0.10 7.50±0.10 7.50±0.10 7.50±0.10
P0 4.00±0.10 4.00±0.10 4.00±0.10 4.00±0.10
P1 8.00±0.10 8.00±0.10 12.00±0.10 12.00±0.10
P2 2.00±0.10 2.00±0.10 2.00±0.10 2.00±0.10
W 16.00±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 – – – –
K0 3.30±0.10 5.30±0.10 6.50±0.10 8.50±0.10
T 0.35±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)
A 330 330 330 330
B 2.20±0.50 2.20±0.50 2.20±0.50 2.20±0.50
C 13.00±0.20 13.00±0.20 13.00±0.20 13.00±0.20
D 20.20±1.00 20.20±1.00 20.20±1.00 20.20±1.00
N 100.00±1.00 100.00±1.00 100.00±1.00 100.00±1.00
W1 16.50±0.10 16.50±0.10 16.50±0.10 16.50±0.10
W2 21.10±02.00 21.10±02.00 21.10±02.00 21.10±02.00
Figure G14 EIA Referenced Taped Component Dimensions for GDT Devices
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
2013_CP_S09-GDT.indd 104 8/3/13 11:05 AM
Gas Discharge Tubes
RoHS Compliant, ELV Compliant HF Halogen Free 105
9
Table G5 Tape and Reel Specifications for GDT Devices (Cont’d)
Tape Dimension 5mm devices (3 pole) 6mm devices (3 pole) 8mm devices (3 pole)
EIA Mark Dimension (mm) Dimension (mm) Dimension (mm)
A0 5.40±0.10 6.50±0.10 8.50±0.10
B0 8.00±0.10 8.60±0.10 10.60±0.10
D0 1.50+0.10/-0 1.50+0.10/-0 1.50+0.10/-0
D1 1.50(min) 1.50(min) –
E1 1.75±0.10 1.75±0.10 1.75±0.10
E2 14.25±0.30 22.25±0.30 22.25±0.30
F 7.50±0.10 11.50±0.10 11.50±0.10
P0 4.00±0.10 4.00±0.10 4.00±0.10
P1 8.00±0.10 12.00±0.10 16.00±0.10
P2 2.00±0.10 2.00±0.10 2.00±0.10
W 16.00±0.30 24.00±0.30 24.00±0.30
TapeThickness
EIA Mark Dimension (mm) Dimension (mm) Dimension (mm)
B1 – – –
K0 5.70±0.10 6.30±0.10 8.40±0.10
T 0.50±0.05 0.50±0.05 0.50±0.05
T1 – – –
T2 – – –
Reel Dimension
EIA Mark Dimension (mm) Dimension (mm) Dimension (mm)
A 330 330 330
B 2.20±0.50 2.20±0.50 2.20±0.50
C 13.00±0.20 13.00±0.20 13.00±0.20
D 20.20±1.00 20.20±1.00 20.20±1.00
N 100.00±1.00 100.00±1.00 100.00±1.00
W1 16.50±0.10 24.50±0.10 24.50±0.10
W2 21.10±02.00 29.10±02.00 29.10±02.00
W3 – – –
Figure G15 EIA Referenced Reel Dimensions for GDT Devices
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)
2013_CP_S09-GDT.indd 105 8/3/13 11:05 AM
RoHS Compliant, ELV Compliant HF Halogen Free
106
9
Part Numbering System for Gas Discharge Tubes (GDTs) Cont’d
GT C S 2 3 - 231 M - R 01 - FS - 2
Packaging
2 = Tape and Reel
Nothing = Tray Packaging
FS = Solder Pellet Fail Short Mechanism on Top
FS2 = Solder Pellet Fail Short Mechanism on Bottom
FT = Plastic Fail Short Mechanism on Top
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
8 = 8mm
Number of Electrodes (2, 3)
Lead Configuration
A = Axial Leads
C = Chip Type
N = No Leads
S = Surface-Mount
T = T-Shape Leads
Ceramic
Gas Tube
Example Part Number for GDTs
NOTE: GTCS23-XXXM-R01 and GTCC23-XXXM-R01 parts available only in surface-mount and tape and reel packaging.
352 R 05 GN
Year 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
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.
Notice :
Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability and test each product
selected for their own applications. Tyco Electronics Corporation and its affiliates in the TE Connectivity Ltd. group of companies (“TE”) reserves
the right to change or update, without notice, any information contained in this publication; to change, without notice, the design, construction,
processing, or specification of any product; and to discontinue or limit production or distribution of any product. This publication supersedes and
replaces all information previously supplied. Without express written consent by an officer of TE, TE does not authorize the use of any of its
products as components in nuclear facility applications, aerospace, or in critical life support devices or systems. TE expressly disclaims all implied
warranties regarding the information contained herein, including, but not limited to, any implied warranties of merchantability or fitness for a
particular purpose. TE’s only obligations are those in the TE Standard Terms and Conditions of Sale and in no case will TE be liable for any incidental,
indirect, or consequential damages arising from the sale, resale, use, or misuse of its products.
2013_CP_S09-GDT.indd 106 8/3/13 11:05 AM
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
TE Connectivity:
GTCS35-900M-R05