Features
■Balanced TRIGARD®
■8 mm diameter, 11 mm long
■UL recognized
■Custom configurations available
■High surge current rating
■Stable breakdown throughout life
2026 Series - 3-Pole Gas Discharge Tube
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 Voltage2....................................... >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 µs3.................................................................................................................. 1 operation minimum
20000 A, 8/20 µs................................................................. > 10 operations
1000 A, 10/1000 µs............................................................. > 400 operations
Alternating Discharge Current ........................... 130 Arms, 11 cycles3.......................................................................................................... 1 operation minimum
20 Arms, 1 s ........................................................................ > 10 operations
Operating Temperature ....................................................................................................................................- 55 to +85 °C
Optional Switch-Grade Failsafe device available.
Notes:
•UL recognized component, UL File E153537.
•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).
1Tube meets BT requirement Type 14 A/1 (210-310 V).
2Network applied.
3DC Sparkover may exceed ±25 % after discharge, but will continue to protect without venting.
Test Methods per ITU-T (CCITT) K.12, IEEE C62.31, RUS PE-80, Telcordia GR 1361
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/µs550 V 625 V 675 V 725 V 800 V 925 V
1000 V/µs775 V 875 V 925 V 1000 V 1100 V 1250 V
Model No.
Characteristic 2026-07 2026-09 2026-15 2026-20 2026-23 2026-25
DC Sparkover ±20 % @ 100 V/s 75 V 90 V 150 V 200 V 230 V 250 V1
Impulse Sparkover
100 V/µs275 V 275 V 350 V 425 V 450 V 475 V
1000 V/µs700 V 600 V 575 V 625 V 650 V 700 V
Applications
■Telecommunications
■Industrial electronics
■Commercial electronics
■Consumer electronics
■Automotive, aircraft, military electronics
Characteristics
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
0.7 - 1.0
(.028 - .040)
1.0
(.04) DIA.
REF.
7.9
(.311) 11.2
(.440)
2026 Series - 3-Pole Gas Discharge Tube
2026-XX-A1
1.0
(.04) DIA.
7.5
(.29)
2026-XX-C8
1.0
(.04) DIA.
7.5
(0.3)
MIN.
4.4
(0.18)
5.5
(0.22) 5.5
(0.22)
2026-XX-C13
1.0
(.04) DIA.
3.04
(.120)
17.8
(.70)
3.93
(.155)
6.4
(.25) 6.4
(.25)
2026-XX-C18
8.1
(.32)
9.8
(.38)
FAILSAFE CONFIGURATION
2026-XX-C2F SHOWN
2026-XX-C — 1.0mm (0.040 in.) dia. lead wire
2026-XX-CB — 0.8mm (0.032 in.) dia. lead wire
MAX.
13.0
(.512)
REF.
15.5
(.610)
MIN.
4.5
(.177)
4.4
(.173)
4.4
(.173)
1.0
(.04) DIA.
2026-XX-C2
7.5
(.295)
MIN.
4.5
(.177)
4.75
(.187)
4.75
(.187)
1.0
(.04) DIA.
2026-XX-C3
DIMENSIONS = MILLIMETERS
(INCHES)
Product Dimensions
2026-XX-A
0.6
(.024)
1.6
(.063)
9.0
(.354)
11.7
(.460)
7.8
(.307)
2026-XX-C14
7.5 ± .30
(.295 ± .012)
6.6 +.25 / -.76
(.26 +.01/-.03)
6.6 +.25 / -.76
(.26 +.01/-.03)
1.0
(.04)
DIA.
REF.
1.0
(.04) DIA.
30
(1.2)
LONG
2 PLCS.
7.5
(.29)
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
2026 Series - 3-Pole Gas Discharge Tube
Switch-Grade Failsafe Device Shorting Curve 2026-XX-XF
REV. 09/04
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 failsafe 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
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
