2028-XX-ALF Datasheet, PDF (1/2 Pages) Bourns Electronic Solutions – 2028 Series Long Life Heavy-Duty 3-Electrode Gas Discharge Tube

*RoHS ^COMPLIANT
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
2028 Series Long Life Heavy-Duty 3-Electrode Gas Discharge Tube
Characteristics
Test Methods per ITU-T (CCITT) K.12 Class 3 and IEC 61643-311.
Characteristic
DC Sparkover ±20 % @ 100 V/s
Impulse Sparkover
100 V/µs (Typical/99 %)
1000 V/µs (Typical/99 %)
2028-23
230 V
< 450 V/550 V
< 650 V/750 V
Model No.
2028-25
2028-35
250 V
350 V
< 450 V/550 V
< 650 V/750 V
< 700 V/800 V
< 850 V/950 V
2028-42
420 V
< 850 V/950 V
< 1050 V/1150 V
Impulse Transverse Delay ............................... 1000 V/µs..........................................................< 75 ns
Insulation Resistance (IR) ............................... 100 V ................................................................> 1 GΩ
Capacitance..................................................... 1 MHz ...............................................................< 2 pF
Glow Voltage ................................................... 10 mA................................................................~ 70 V
Arc Voltage ...................................................... 1 A.....................................................................~ 10 V
DC Holdover Voltage ¹ .................................... 135 V ................................................................< 150 ms
Impulse Discharge Current ² ........................... 30,000 A, 8/20 µs.............................................. 1 operation
20,000 A, 8/20 µs.............................................. 10 operations
5,000 A, 10/350 µs............................................ 1 operation
200 A, 10/1000 µs............................................. 300 operations
20 A, 10/1000 µs............................................... 1500 operations
Alternating Discharge Current ......................... 20 Arms, 1 second ............................................ 10 operations
Operating Temperature............................................................................................................... -55 to +85 °C
Climatic Category (IEC 60068-1)................................................................................................ 40 / 90 / 21
Notes:
1 _{Network applied.}
2 _{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.
Bulk Packaging Specifications
2028-xx-ALF ................... 250 pcs. per tray
2028-xx-CLF..................... 50 pcs. per tray
2028-xx-C2LF................. 100 pcs. per tray
2028-xx-C2FLF............... 100 pcs. per tray
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
Asia-Pacific:
Tel: [phone]
Fax: [phone]
Europe:
Tel: [phone]
Fax: [phone]
The Americas:
Tel: [phone]
Fax: [phone]
www.bourns.com
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications 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 specific applications.