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Features
Applications
■ Balanced TRIGARD®
■ Telecommunications
■ Approximately 8 mm diameter, 11 mm long
■ Industrial electronics
■ UL Recognized
■ Commercial electronics
■ Custom configurations available
■ Consumer electronics
■ High surge current rating
■ Aircraft and military electronics
■ Stable breakdown throughout life
■ RoHS compliant* version available
2026 Series - 3-Pole Gas Discharge Tube
Characteristics
Test Methods per ITU-T K.12, IEEE C62.31 and IEC 61643-311 GDT standards.
Model No.
Characteristic
2026-07
2026-09
2026-15
2026-20
2026-23
2026-25
2026-26
DC Sparkover ±20 % @ 100 V/s
75 V
90 V
150 V
200 V
230 V
250 V
260 V
Impulse Sparkover
100 V/μs
1000 V/μs
275 V
700 V
275 V
600 V
350 V
575 V
425 V
625 V
450 V
650 V
475 V
700 V
475 V
700 V
(1)
Model No.
Characteristic
2026-30
2026-35
2026-40
2026-42
2026-47
2026-60
DC Sparkover ±20 % @ 100 V/s
300 V
350 V
400 V
420 V
470 V
600 V
Impulse Sparkover
100 V/μs
1000 V/μs
550 V
775 V
625 V
875 V
675 V
925 V
725 V
1000 V
800 V
1100 V
925 V
1250 V
(1)
(1)
Impulse Sparkover voltage is defined as typical values of distribution.
Impulse Transverse Delay.............................................1000 V/μs ................................................................. < 75 ns
Insulation Resistance ...................................................100 V (50 V for Model 2026–07 & 2026-09) ............. > 1010 Ω
Glow Voltage ................................................................10 mA ....................................................................... ~ 70 V
Arc Voltage ...................................................................1A ............................................................................. ~ 10 V
Glow-Arc Transition Current ........................................................................................................................... < 0.5 A
Capacitance .................................................................1 MHz ....................................................................... < 2 pF
DC Holdover Voltage (2) ...............................................>135 V, (52 V for Model 2026-07 & 2026-09, ........... < 150 ms
80 V for Model 2026-15)
Impulse Discharge Current ...........................................40000 A, 8/20 μs (3) .................................................. 1 operation minimum
20000 A, 8/20 μs ...................................................... > 10 operations
5000 A, 10/350 μs ................................................... 1 operation
1000 A, 10/1000 μs ................................................. > 400 operations
Alternating Discharge Current ......................................130 Arms, 11 cycles (3) ............................................. 1 operation minimum
20 Arms, 1 s ............................................................. > 10 operations
Operation and Storage Temperature .............................................................................................................. -40 to +90 °C
Climatic Category (IEC 60068-1) .................................................................................................................... 40/ 90/ 21
Moisture Sensitivity Level ............................................................................................................................... 1
ESD Classification (HBM) ............................................................................................................................... 6
An optional Switch-Grade Fail-Short device is available. The optional Fail-Short assembly will activate at a temperature of 215 °C – 217 °C
to provide a high conductive path to ground in case of a thermal overload. GDTs equipped with the optional Fail-Short device should be
soldered either manually at a temperature that is below the activation temperature of the Fail-Short mechanism, or using a selective soldering
process that does not exceed 210 °C.
Notes:
• Model number marking on tube: 26-xxx V.
• The rated discharge current for TRIGARD® Gas Discharge Tubes is the total current equally divided between each line to ground.
• Sparkover limits after life ±25 %, IR >108Ω (-25 %,+30 % for Model 2026-07, 2026-09 and 2026-60).
• Line to Line voltage is approximately 1.8 to 2 times the stated Line to Ground breakdown voltage.
• At delivery AQL 0.65 Level II, DIN ISO 2859
(2)
(3)
Network applied.
DC Sparkover may exceed ±25 % after discharge, but will continue to protect without venting.
WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
Specifications are subject to change without notice. Users should verify actual device performance in their specific
applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the
last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
2026 Series - 3-Pole Gas Discharge Tube
Product Dimensions (additional lead form configurations available upon request)
2026-XX-A
DIA.
2.5 ± 0.25
(.098 ± .010)
2026-XX-C4
7.9 ± 0.3
DIA.
(.311 ± .012)
1.53 ± 0.1
(.060 ± .004)
7.5 ± 0.4
(.295 ± .016)
DIA.
9.0 ± 0.2
(.354 ± .008)
7.8 ± 0.3
DIA.
(.307 ± .012)
0.8 ± 0.3
(.032 ± .012)
11.83 ± 0.6
(.466 ± .024)
13.5 ± 0.4
(.531 ± .016)
1.0 ± 0.04
(.039 ± .002)
DIA.
5.85 ± 0.6
(.230 ± .024)
5.85 ± 0.6
(.230 ± .024)
2026-XX-A1
7.9 ± 0.3
(.311 ± .012)
DIA.
11.3 ± 0.4
(.445 ± .016)
2026-XX-C
1.0 ± 0.08 mm (.039 ± .002 in.) dia. lead wire
DIA.
7.9 ± 0.2
(.311 ± .008)
11.3 ± 0.4
(.449 ± .016)
30.5 ± 0.4
(1.201 ± .016)
LONG
2 PLCS.
1.0 ± 0.04
(.039 ± .002)
DIA.
0.85 ± 0.2
(.033 ± .008)
2026-XX-C2
7.9 ± 0.3
(.311 ± .012)
DIA.
DIA.
1.0 ± 0.04
(.039 ± .002)
13.0 ± 0.8
(.511 ± .031)
7.5 ± 0.4
(.295 ± .016)
15.4 ± 0.8
(.606 ± .032)
1.0 ± 0.04
(.039 ± .002)
DIA.
4.4 ± 0.3
(.173 ± .012)
4.4 ± 0.3
(.173 ± .012)
7.5 ± 0.3
(.295 ± .012)
FAIL-SHORT CONFIGURATION
2026-XX-C2F SHOWN
8.1 ± 0.3
(.319 ± .012)
4.5 ± 0.3
(.177 ± .012)
9.6 ± 0.4
(.378 ± .016)
2026-XX-C3
7.9 ± 0.3
DIA.
(.311 ± .012)
7.5 ± 0.4
(.295 ± .016)
1.0 ± 0.04
(.039 ± .002)
DIA.
4.7 ± 0.3
(.185 ± .012)
4.7 ± 0.3
(.185 ± .012)
13.5 ± 0.4
(.531 ± .016)
DIMENSIONS:
MM
(INCHES)
UNITS WITH LEADS ARE BASED ON THE
2026-XX-A1 BODY.
4.5 ± 0.3
(.177 ± .012)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
2026 Series - 3-Pole Gas Discharge Tube
How to Order
Packaging Specifications
2026 - nn - x n F LF
Model Number
Designator
Standard Packaging Quantity
Model
Voltage (Divided by 10)
07 = 75 V
30 = 300 V
09 = 90 V
35 = 350 V
15 = 150 V
40 = 400 V
20 = 200 V
42 = 420 V
23 = 230 V
47 = 470 V
25 = 250 V
60 = 600 V
26 = 260 V
Leads
A = None
C = 1 mm
Bulk (Bag)
Tray
Box
2026-XX-A
250
1000
2026-XX-A1
250
1000
2026-XX-C
50
300
2026-XX-C2
100
1000
2026-XX-C3
100
1000
2026-XX-C4
100
1000
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
Agency Recognition / Industry Standards
Agency
References
UL 497B Recognized Component, Category QVGQ2, File E153537
UL 497 Recognized Component, Category QVGV2, File E53117
Telcordia
GR-974-CORE/
GR-1361-CORE
2026 Series devices, as applicable, are tested to GR requirements for primary protectors
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
2026 Series - 3-Pole Gas Discharge Tube
Switch-Grade Fail-short Device Shorting Curve 2026-XX-XF
30.0
Current (A) (ELTGS)
20.0
10.0
5.0
1.0
0.5
0.1
1
10
100
1000
Seconds
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.
REV. 09/19
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and
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Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
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