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Document overview

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Technical content

Features

■ Size: 8 mm diameter, 10 mm length ■ Balanced and symmetrical TRIGARD® design ■ High surge current rating ■ Stable breakdown throughout life ■ Long life ■ Fail-Short available ■ RoHS compliant*

Applications

■ Telecommunications electronics ■ Industrial electronics ■ Consumer electronics Characteristics

2028 Series Long Life Heavy-Duty 3-Electrode Gas Discharge Tube

*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. 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 specifi c applications. Test Methods per ITU-T K.12, IEEE C62.31 and IEC 61643-311 GDT standards. Characteristic Model No. 2028-23 2028-25 2028-35 2028-42 DC Sparkover ±20 % @ 100 V/s 230 V 250 V 350 V 420 V Impulse Sparkover (1)

100 V/µs (Typical/99 %)

1000 V/µs (Typical/99 %)

< 450 V/550 V < 650 V/750 V < 450 V/550 V < 650 V/750 V < 700 V/800 V < 850 V/950 V < 850 V/950 V < 1050 V/1150 V DC Holdover Voltage 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: (2) Network applied. (3) The Rated Impulse Discharge Current for TRIGARD® Gas Discharge Tubes is the total current equally divided between each line to ground.

  • At delivery AQL 0.65 Level II, DIN ISO 2859. *RoHS COMPLIANT How to Order 2028 - nn - x n F LF Model Number Designator Voltage (Divided by 10) 23 = 230 V 35 = 350 V 25 = 250 V 42 = 420 V Leads A = No Leads / Cassette Applications C = 1.0 mm Lead Shape (See Product Dimension Drawings) Fail-Short Option Blank = Standard Product F = With Fail-Short Mechanism RoHS Compliancy LF = RoHS Compliant Product (1) Impulse Sparkover voltage is defi ned as typical values of distribution.

Specifi 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 specifi c applications. 10.2 ± 0.4 (.402 ± .016) 73.0 ± 0.3 (2.87 ± .012) 1.0 ± 0.04 (.040 ± .002) DIA. 1.0 ± 0.04 (.040 ± .002) DIA. 7.5 ± 0.4 (.295 ± .016) 8.0 ± 0.2 (.315 ± .008) DIA. 2028-xx-A 2028-xx-C2F WITH FAIL-SHORT OPTION 2028-xx-C 1.0 mm dia. lead wire 14.0 ± 0.4 (.551 ± .016) 4.5 ± 0.4 (.177 ± .016) 15.0 ± 0.5 (.591 ± .020) 4.4 ± 0.3 (.173 ± .012) 4.4 ± 0.3 (.173 ± .012) 2028-xx-C2 8.51 ± 0.5 (.335 ± .020) 10.2 ± 0.3 (.402 ± .012) 1.5 ± 0.3 (.059 ± .012) 8.0 ± 0.2 (.315 ± .008) 10.2 ± 0.4 (.402 ± .016) DIA. 2.5 ± 0.25 (.098 ± .010) DIA. 8.0 ± 0.2 (.315 ± .008) DIA. 1.0 ± 0.04 (.040 ± .002) DIA. 11.9 ± 0.5 (.469 ± .020) DIMENSIONS: MM (INCHES) REV. D 11/15 Model Standard Packaging Quantity Bulk (Bag) Tray Box 2028-XX-A 250 1000 2028-XX-C 50 300 2028-XX-C2 100 900 2028-XX-C2F 100 900 Packaging Specifi cations