Features
Applications
■ Surface mount for economical assembly
■ High surge current rating
■ Low capacitance and insertion loss
■ Stable breakdown throughout life
■ 8 mm diameter, 6 mm long
■ UL Recognized
■ Telecommunications
■ Industrial electronics
■ Commercial electronics
■ Automotive, aircraft, military electronics
2027-xx-SM Precision Gas Discharge Tube Surge Protector
Bourns offers an 8 x 6 mm Surface Mount (SM) 2-electrode GDT surge protection device. The industry-leading quality and features
of Bourns® 2027 Series GDT continue in this new SM version. Compatible with “pick and place” assembly systems, the 2027-SM is
ideal for compact applications such as PCBs for telecommunications, commercial and industrial applications.
Characteristics
Test Methods per ITU-T (CCITT) K.12, IEEE C62.31, RUS PE-80, Telcordia GR 1361
Model No.
Characteristic
2027-07-SM 2027-09-SM 2027-15-SM 2027-20-SM 2027-23-SM 2027-25-SM
DC Sparkover 15 ꢀ
( 20 ꢀ for Models 2027-07-SM &
2027-09-SM) @ 100 V/s
75 V
90 V
150 V
200 V
230 V
250 V
Impulse Sparkover
100 V/µs
300 V
500 V
300 V
500 V
350 V
575 V
400 V
600 V
450 V
675 V
475 V
700 V
1000 V/µs
Model No.
2027-30-SM 2027-35-SM 2027-40-SM 2027-42-SM 2027-47-SM 2027-60-SM
Characteristic
DC Sparkover 15 ꢀ @ 100 V/s
300 V
350 V
400 V
420 V
470 V
600 V
Impulse Sparkover
100 V/µs
550 V
800 V
600 V
875 V
650 V
925 V
675 V
950 V
725 V
1000 V
850 V
1100 V
1000 V/µs
Insulation Resistance ...................................... 100 V (50 V for Models 2027–07-SM
& 2027-09-SM) .................................................> 10
10
Ω
Glow Voltage ................................................... 10 mA................................................................~ 70 V
Arc Voltage ...................................................... > 1A ..................................................................~ 10 V
Glow-Arc Transition Current.......................................................................................................< 0.5 A
Capacitance .................................................... 1 MHz ...............................................................< 1 pF
**
DC Holdover Voltage .................................... 135 V, (52 V for Models 2027-07-SM
& 2027-09-SM; 80 V for Model 2027-15-SM)...< 150 ms
***
Impulse Discharge Current.............................. 25000 A, 8/20 µs ........................................... 1 operation minimum
10000 A, 8/20 µs...............................................> 10 operations
2500 A, 10/350 µs ............................................ 2 operations
500 A, 10/1000 µs ............................................> 400 operations
100 A, 10/1000 µs or 10/700 µs .......................> 1000 operations
***
Alternating Discharge Current......................... 65 Arms, 11 cycles ........................................ 1 operation minimum
10 Arms, 1 s......................................................> 10 operations
Operating Temperature............................................................................................................... -55 to +85 °C
Climatic Category (IEC 60068-1)................................................................................................ 40/90/21
Notes:
• UL recognized component, UL File E153537.
• Model number marking on tube: 27-xxxV.
• Surface Mount (SM) parts may show a temporary increase in DCBD after the solder reflow process. Most devices will recover
within 24 hours time. It should be noted that there is no quality defect nor change in protection levels during the temporary change
in DCBD.
8
• Sparkover limits 20 ꢀ after life, IR >10 Ω (-25 ꢀ, +30 ꢀ for Models 2027-07-SM, 2027–09-SM and 2027–60-SM).
• At delivery AQL 0.65 Level II, DIN ISO 2859.
**
Network applied.
***
DC Sparkover may exceed 20 ꢀ after discharge, 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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