Features Applications Balanced TRIGARD Telecommunications Approximately 8 mm diameter, 11 mm long Industrial electronics UL recognized Commercial electronics Custom con gurations available Consumer electronics High surge current rating Automotive, aircraft, 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 1 DC Sparkover 20 % 100 V/s 75 V 90 V 150 V 200 V 230 V 250 V 260V (1) Impulse Sparkover 100 V/s 275 V 275 V 350 V 425 V 450 V 475 V 475 V 1000 V/s 700 V 600 V 575 V 625 V 650 V 700 V 700 V 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 (1) Impulse Sparkover 100 V/s 550 V 625 V 675 V 725 V 800 V 925 V 1000 V/s 775 V 875 V 925 V 1000 V 1100 V 1250 V (1) Impulse Sparkover voltage is de ned as typical values of distribution. Impulse Transverse Delay .............................................1000 V/s .................................................................< 75 ns 10 Insulation Resistance ...................................................100 V (50 V for Model 202607 & 2026-09) .............> 10 Glow Voltage ................................................................10 mA .......................................................................~ 70 V Arc Voltage ...................................................................1A .............................................................................~ 10 V Glow-Arc Transition Current ...........................................................................................................................< 0.5 A Capacitance .................................................................1 MHz .......................................................................< 2 pF (3) DC Holdover Voltage ...............................................>135 V, (52 V for Model 2026-07 & 2026-09, ...........< 150 ms 80 V for Model 2026-15) (4) Impulse Discharge Current ...........................................40000 A, 8/20 s .................................................. 1 operation minimum 20000 A, 8/20 s ......................................................> 10 operations 5000 A, 10/350 s ................................................... 1 operation 1000 A, 10/1000 s .................................................> 400 operations (4) Alternating Discharge Current ......................................130 Arms, 11 cycles ............................................. 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 Optional Switch-Grade Fail-short device available. Models with the optional Fail-Short assembly activate at low temperature (215 C 217 C) when required. These models are designed to be soldered either manually or using a selective soldering process that does not exceed 210 C, below the temperature that the Fail-Short assembly would activate. 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. 8 Sparkover limits after life 25 %, IR >10 (-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) Tube meets BT requirement Type 14 A/1 (210-310 V). (3) Network applied. (4) DC Sparkover may exceed 25 % after discharge, but will continue to protect without venting. *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. Speci cations are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their speci c applications. *RoHS COMPLIANT VERSIONS AVAILABLE 2026 Series - 3-Pole Gas Discharge Tube Product Dimensions (additional lead form con gurations available upon request) 2026-XX-A 2026-XX-C4 7.9 0.3 DIA. 1.53 0.1 DIA. 2.5 0.25 (.311 .012) (.060 .004) (.098 .010) 7.5 0.4 (.295 .016) 0.8 0.3 13.5 0.4 9.0 0.2 1.0 0.04 (.032 .012) DIA. (.531 .016) (.354 .008) (.039 .002) 11.83 0.6 7.8 0.3 DIA. DIA. (.466 .024) (.307 .012) 5.85 0.6 5.85 0.6 (.230 .024) (.230 .024) 2026-XX-A1 7.9 0.3 (.311 .012) 11.3 0.4 2026-XX-C DIA. (.445 .016) 1.0 0.08 mm (.039 .002 in.) dia. lead wire DIA. 30.5 0.4 7.9 0.2 (1.201 .016) 11.3 0.4 (.311 .008) LONG (.449 .016) 2 PLCS. 1.0 0.04 0.85 0.2 (.039 .002) (.033 .008) DIA. 2026-XX-C2 1.0 0.04 7.5 0.3 DIA. (.039 .002) 7.9 0.3 (.295 .012) 13.0 0.8 (.311 .012) (.511 .031) DIA. 7.5 0.4 FAIL-SHORT CONFIGURATION (.295 .016) 2026-XX-C2F SHOWN 15.4 0.8 8.1 0.3 1.0 0.04 (.606 .032) (.319 .012) (.039 .002) DIA. 4.5 0.3 4.4 0.3 (.177 .012) (.173 .012) 4.4 0.3 (.173 .012) 9.6 0.4 (.378 .016) 2026-XX-C3 7.9 0.3 DIA. (.311 .012) MM DIMENSIONS: 7.5 0.4 (INCHES) (.295 .016) UNITS WITH LEADS ARE BASED ON THE 13.5 0.4 1.0 0.04 (.531 .016) 2026-XX-A1 BODY. (.039 .002) DIA. 4.5 0.3 4.7 0.3 (.177 .012) (.185 .012) 4.7 0.3 (.185 .012) Speci cations are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their speci c applications.