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
■ Aircraft and 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 K.12, IEEE C62.31 and IEC 61643-311 GDT standards.
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 (1)
100 V/μs
1000 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
Model No.
Characteristic
2027-30-SM
2027-35-SM
2027-40-SM
2027-42-SM
2027-47-SM
2027-60-SM
DC Sparkover ±15 % @ 100 V/s
300 V
350 V
400 V
420 V
470 V
600 V
Impulse Sparkover (1)
100 V/μs
1000 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
(1)
Impulse Sparkover voltage is defined as typical values of distribution.
Insulation Resistance ...................................... 100 V (50 V for Models 2027–07-SM
10
& 2027-09-SM) .................................................> 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 (2) .................................. 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 (3) ........................................... 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 +125 °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.
• Bourns recommends reflowing surface mount devices per IPC/JEDEC J-STD-020 rev D.
(2)
Network applied.
(3) DC Sparkover may exceed ±20 % after discharge, but will continue to protect without venting.
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
Specifications are subject to change without notice. Users should verify actual device performance in their specific
WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov
applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the
last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
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