Features
n Surface mount for economical assembly
n High surge current rating
n Designed to meet ITU-T K.12 class 5 surge
current requirements
n Low capacitance and insertion loss
n Stable breakdown throughout life
n UL Recognized
Applications
n Telecommunications
n Industrial electronics
n Commercial electronics
n Automotive, aircraft, military electronics
Characteristics
2029-xx-SMLF Heavy Duty Gas Discharge Tube Surge Arrestor
*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.
Test Methods per ITU-T K.12, IEEE C62.31 and IEC 61643-311 GDT standards.
Insulation Resistance ...................................... 100 V (50 V for Model 2029-09-SMLF) ............. > 10
10
Ω
Glow Voltage ................................................... 10 mA ................................................................ ~ 70 V
Arc Voltage ...................................................... > 1A ...................................................................~ 12 V
Glow-Arc Transition Current .......................................................................................................< 0.5 A
Capacitance..................................................... 1 MHz ...............................................................< 1 pF
DC Holdover Voltage
(2)
.................................. 135 V, (52 V for Model 2029-09-SMLF;
80 V for Model 2029-15-SMLF) ........................< 150 ms
Impulse Discharge Current .............................. 25000 A, 8/20 µs .............................................. 1 operation minimum
(3)
20000 A, 8/20 µs ............................................... > 10 operations
5 kA, 10/350 µs ................................................ 1 operation minimum
(3)
100 A, 10/1000 µs ............................................. > 300 operations
10 A, 10/1000 µs ............................................... > 1500 operations
Alternating Discharge Current ......................... 65 Arms, 11 cycles ........................................... 1 operation minimum
(3)
20 Arms, 1 s ...................................................... > 10 operations
Storage Temperature .................................................................................................................. -55 to +105 °C
Operating Temperature ............................................................................................................... -55 to +105 °C
Climatic Category (IEC 60068-1)................................................................................................ 55/105/21
Notes:
• UL recognized component, UL File E153537.
• Model number marking on tube: 2029-xxxV.
• Surface Mount (SM) parts may show a temporary increase in DCBD after the solder reow 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.
• Sparkover limits ± 25% and IR >10
8
Ω after life.
• At delivery AQL 0.65 Level II, DIN ISO 2859.
• Bourns recommends reowing 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.
Characteristic
Model No.
2029-09-SMLF 2029-15-SMLF 2029-23-SMLF 2029-35-SMLF 2029-42-SMLF
DC Sparkover ±20 %
@ 100 V/s
90 V 150 V 230 V 350 V 420 V
Impulse Sparkover
(1)
100 V/μs (Typical)
100 V/μs (99 %)
275 V
375 V
325 V
375 V
450 V
500 V
600 V
625 V
650 V
750 V
Impulse Sparkover
(1)
1 kV/μs (Typical)
1 kV/μs (99 %)
525 V
600 V
525 V
625 V
650 V
750 V
775 V
875 V
850 V
1000 V
Bourns offers a heavy duty 2-electrode GDT surge arrestor in an 8x6 mm surface mount (SM) package. The Model 2029-xx-SMLF
Series is categorized as a Class 5 rated GDT and attains the highest performance classication available under ITU K.12
requirements. High performance in a compact surface mount package makes this series ideal for use in heavily exposed
telecommunications, commercial and industrial applications.
*RoHS COMPLIANT
LEAD FREE
*RoHS COMPLIANT
VERSIONS
AVAILABLE
LEAD FREE
VERSIONS ARE
RoHS COMPLIANT*
(1)
Impulse Sparkover voltage is dened as typical values of distribution.
