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Features
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Balanced Mini-TRIGARD
™
(5 mm diameter, 7.3 mm length)
Ideal for board level protection of broad-
band circuits
Symmetrical breakdown voltage
(L-L, L-G)
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Leadless, surface mount for economical
assembly
High surge current rating, low insertion
loss
Stable breakdown throughout life
RoHS compliant* versions available
*R
2038 Series Miniature Symmetrical 3-Electrode Surface Mount Gas Discharge Tube
Bourns offers a symmetrical surface mount (SM) 3-electrode GDT surge protection device. The industry-leading quality and features of
the Bourns
®
miniature-TRIGARD
TM
series GDT continue in the 2038 symmetrical version. The 2038 series is ideal for board level
protection of high bandwidth applications such as xDSL, cable broadband and high speed Ethernet, due to its symmetrical turn on
characteristics as well as high energy-handling capability, long and stable life performance and low capacitance of less than 1 pF. The
2038 series’ breakdown voltages are nearly equal line to line as well as line to ground. Typical 3-electrode GDT line-line breakdown
voltages are 1.8-2 times higher than the line to ground breakdown voltage. Bourns
®
Gas Discharge Tubes (GDT) are designed to
prevent damage from transient disturbances by acting as a “crowbar” in creating a virtual short-to-ground circuit during conduction.
When an electrical surge exceeds the defined breakdown voltage level of the GDT, the device becomes ionized and rapid conduction
takes place. When the surge passes and the system voltage returns to normal levels, the GDT returns to its high-impedance (off) state.
Characteristics
Test Methods per ITU-T (CCITT) K.12 and IEEE C62.31
Model No.
Characteristic
DC Sparkover ± 20% @ 100 V/s
L1/L2 to Grnd and Line 1 to Line 2
Typical Impulse Sparkover
L1/L2 to Grnd and Line 1 to Line 2
100V/µs
1000V/µs
2038-15-SM
150 V
2038-20-SM
200 V
2038-23-SM
230 V
2038-30-SM
300 V
2038-35-SM
350 V
350 V
500 V
425 V
575 V
450 V
600 V
Model No.
500 V
650 V
600 V
750 V
Characteristic
DC Sparkover ± 20% @ 100 V/s
L1/L2 to Grnd and Line 1 to Line 2
Typical Impulse Sparkover
L1/L2 to Grnd and Line 1 to Line 2
100V/µs
1000V/µs
2038-42-SM
420 V
2038-47-SM
470 V
2038-60-SM
600 V
2038-80-SM
800 V
2038-110-SM
1100 V
675 V
850 V
750 V
950 V
850 V
1100 V
1150 V
1400 V
1500 V
1700 V
Impulse Transverse Delay.......................................100 V/µs...................................................................................< 75 ns
Insulation Resistance (IR) .......................................100 V ..............................................................................> 10
10
Ω
Glow Voltage ..........................................................10 mA .............................................................................~ 70 V
Arc Voltage .............................................................1 A ..................................................................................~ 10 V
Glow-Arc Transition Current ...........................................................................................................................< 0.5 A
Capacitance ...........................................................1 MHz .............................................................................< 1 pF
DC Holdover Voltage
1
............................................135 V ..............................................................................< 150 ms
Impulse Discharge Current.....................................10000 A, 8/20 µs
2
...........................................................1 operation min.
5000 A, 8/20 µs ..............................................................> 10 operations
200 A, 10/1000 µs ..........................................................> 300 operations
200 A, 10/700 µs ...........................................................> 500 operations
10 A, 10/1000 µs ...........................................................> 1500 operations
Alternating Discharge Current ................................10 Arms, 1 s
2
..................................................................1 operation min.
5 Arms, 1 s .....................................................................> 10 operations
Operating Temperature ..................................................................................................................................-40 to +90 °C
Notes:
UL Recognition pending.
The rated discharge current for Mini-TRIGARD
™
GDTs is the total current equally divided between each line to ground.
Sparkover limits after life ±25 %. IR >10
8
Ω
(+30 %, -25 % for 2038-60,-80 and -110).
Operating characteristics per RUS PE-80 and Telcordia GR 1361 available on request.
1
2
Network applied.
DC Sparkover may exceed ±25 % but will continue to protect without venting.
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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