Features
■ Fast acting
■ Balanced
■ Stable breakdown throughout life
■ Designed to operate with TBU® devices
■ RoHS compliant* versions available
Applications
■ Telecommunications
■ Industrial electronics
■ Avionics
Characteristics
2020 T-Series - Fast Acting 3-Electrode Miniature GDT
“TBU” is a registered trademark of Bourns, Inc. in the United States and other countries.
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
Characteristic Model No.
2020-15T 2020-23T 2020-42T
Minimum DC Sparkover (100 V/s)
Throughout Service Life 60 V 180 V 360 V
Maximum Impulse Sparkover (5k V 1.2/50 µs)
Throughout Service Life 500 V 650 V 850 V
Impulse Transverse Delay ..................1000 V/µs ............................................................................... < 75 ns
Insulation Resistance (IR) ..................50 V / 100 V ............................................................................ > 10 9 Ω
Glow Voltage ......................................10 mA ..................................................................................... ~ 70 V
Arc Voltage .........................................>1 A ........................................................................................ ~ 10 V
Glow-Arc Transition Current ............................................................................................................... < 0.5 A
Capacitance........................................1 MHz ..................................................................................... < 1 pF
DC Holdover Voltage (Network Applied per ITU-T K.12)
2020-15T .......................................52 V ........................................................................................ < 150 ms
2020-23T .......................................80 V ........................................................................................ < 150 ms
2020-42T .......................................135 V ...................................................................................... < 150 ms
Service Life1 .......................................8/20 µs, 10 kA......................................................................... 1 operation
10/1000 µs, 1 kV, 200 A .......................................................... 100 operations2
2/10 µs, 6 kV, 2000 A .............................................................. 10 operations2
10/700 µs, 6 kV, 300 A ............................................................ 50 operations2
8/20 µs, 500 A, 1.2/50 µs, 500 V ............................................ 150 operations2
600 V, 10 Arms, 0.2 sec.......................................................... 10 operations
600 Vrms, 0.5 A - 60 A ............................................................ Fail-Short activates3
230 Vrms, 0.5 A-25 A .............................................................. Fail-Short activates3
Operating and Storage Temperature .................................................................................................. -40 to +90 °C
Climatic Category (IEC 60068-1) ....................................................................................................... 40 / 90 / 21
Notes:
1 The rated discharge current is the total current equally divided between each line to ground.
2 Surge polarity should be reversed between consecutive surges (+,-,+,-)
3 Applies only to GDT with optional Fail-Short. GDT operates and will survive with Fail-Short activation.
• At delivery AQL 0.65 Level II, DIN ISO 2859.
*RoHS COMPLIANT
VERSIONS
AVAILABLE
Port Protection GDT Device P/N TBU® Device P/N
CanBus 2020-23T TBU-CA065-100-WH
RS232 2020-23T TBU-CA065-200-WH
RS422 2020-23T TBU-CA065-200-WH
RS485 2020-23T TBU-CA065-200-WH
RS485 2020-42T TBU-CA085-200-WH
SDI 2020-23T TBU-CA065-100-WH
VDSL 2020-15T TBU-CA050-500-WH
Applications
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
2020 T-Series - Fast Acting 3-Electrode Miniature GDT
Product Dimensions (additional lead form confi gurations available upon request)
How to Order
2020 - xxT - x x F LF
Model Number
Designator
Voltage
15 = 60 V
23 = 180 V
42 = 360 V
Leads
A = None/Cassette Applications
C = 1 mm Dia. Leads/Through-hole
Lead Shape
(See Product Dimension Drawings)
Fail-Short Option
Blank = Standard Product
F = With Fail-Short Mechanism
RoHS Compliant Option
Blank = Standard Product
LF = RoHS Compliant Product
Model 2020-xxT ships in standard bulk pack, 100
pcs./tray.
DIMENSIONS: MILLIMETERS
UNITS WITH LEADS ARE BASED ON
THE 2020-xxT-A1 BODY.
2020-xxT-A1
0.7 - 1.0 1.0 DIA.
7.9 11.2 REF.
2020-xxT-C2
13.0
MAX.
15.4
4.5
4.4
4.4
1.0 DIA.
2020-xxT-C3
7.5
4.4
4.75
4.75
1.0 DIA.
2020-xxT-C4
7.5
6.1
6.1
1.0 DIA.
2020-xxT-C8
1.0 DIA.
7.5
2020-xxT-C
1.0 mm dia. lead wire
1.0 DIA.
30
LONG
2 PLCS.
7.5
FAIL-SHORT
CONFIGURATION
2020-xxT-C2F SHOWN
8.1
9.6
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
2020 T-Series - Fast Acting 3-Electrode Miniature GDT
REV. D 03/12
Switch-Grade Fail-Short Device Shorting Curve 2020-xxT-XF
10.0
20.0
30.0
5.0
Current (A) (ELTGS)
1.0
0.5
0.1
110 100
ELTGS = Each Line to Ground Simultaneously
NOTE: When using a GDT fail-short device, it is imperative that all components associated and
connected to the GDT with failsafe be tested in their respective completely integrated environment
(finished product) to assure desired operation.
Seconds
1000
