# Gas Discharge Tube (GDT), Heavy Duty, 2029, 420 V, 2 Terminal SMD, 25 kA, 850 V
**URL**: https://novapart.co/products/2029-42-SM-RPLF/gas-discharge-tube-gdt-heavy-duty-2029-420-v-2
**SKU**: 2029-42-SM-RPLF
**Manufacturer**: BOURNS
**Category**: Circuit Protection || Gas Discharge Tubes - GDT
**Price**: €0.8320
**Stock**: 10+
**Lead Time**: 43 days (indicative)
## Description
Product Range:2029 Series; DC Breakover Voltage:420V; GDT Case Style:2 Terminal SMD; Impulse Discharge Current:25kA; Impulse Sparkover Voltage:850V; SVHC:No SVHC (15-Jan-2018)
## Specifications
| Parameter | Value |
|---|---|
| Svhc | No SVHC (04-Feb-2026) |
| Product Range | 2029 |
| Gdt Case Style | 2 Terminal SMD |
| Dc Breakover Voltage | 420V |
| Impulse Discharge Current | 25kA |
| Impulse Sparkover Voltage | 850V |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:2495071/)
## **Features**
## **Applications**
## n Surface mount for economical assembly n Telecommunications n High surge current rating n Industrial electronics n Designed to meet ITU-T K.12 class 5 surge n Commercial electronics current requirements n Automotive, aircraft, military electronics n Low capacitance and insertion loss n Stable breakdown throughout life n UL Recognized - POURNS ~~EE~~ **2029-xx-SMLF Heavy Duty Gas Discharge Tube Surge Arrestor**
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 classification 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.
## ~~**Characteristics**~~
Test Methods per ITU-T K.12, IEEE C62.31 and IEC 61643-311 GDT standards.
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|||||||
|---|---|---|---|---|---|
|Model No.|
|Characteristic|
|2029-09-SMLF|2029-15-SMLF|2029-23-SMLF|2029-35-SMLF|2029-42-SMLF|
|DC Sparkover ±20 %|
|90 V|150 V|230 V|350 V|420 V|
|@ 100 V/s|
|Impulse Sparkover|[(1)]|
|100 V/μs (Typical)|275 V|325 V|450 V|600 V|650 V|
|100 V/μs (99 %)|375 V|375 V|500 V|625 V|750 V|
|Impulse Sparkover|[(1)]|
|1 kV/μs (Typical)|525 V|525 V|650 V|775 V|850 V|
|1 kV/μs (99 %)|600 V|625 V|750 V|875 V|1000 V|
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(1) Impulse Sparkover voltage is defined as typical values of distribution.
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||||
|---|---|---|
|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|
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## **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 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. • Sparkover limits ± 25% and IR >10[8] Ω after life.
- 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 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.
## **2029-xx-SMLF Heavy Duty Gas Discharge Tube Surge Arrestor**
## ~~**Product Dimensions**~~
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6.0 ± 0.3
7.9 ± 0.2 0.48 ± 0.1 (.236 ± .012) 0.43 ± 0.1
(.311 ± .008) (.019 ± .004) (.017 ± .004)
7.50 ± 0.2
(.311 ± .008)
MM
DIMENSIONS:
(INCHES)
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Recommended Pad Layout
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5.84
(.230)
1.78
(.070)
8.25
(.325)
0.25
TOLERANCES: ±
(0.10)
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## ~~**How to Order**~~
## **2029 - xx - SM -RP LF**
Model Number Designator Voltage (Divided by 10) 09 = 90 V 23 = 230 V 42 = 420 V 15 = 150 V 35 = 350 V Surface Mount Packaging Option Blank = Bulk Packaging (Standard) -RP = 16 mm Reelpack (Optional) RoHS Compliancy LF = RoHS Compliant Product
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.
## **2029-xx-SMLF Heavy Duty Gas Discharge Tube Surge Arrestor**
## ~~**Packaging Specifcations**~~
|~~**cations**~~|||||
|---|---|---|---|---|
|**Model**|**Standard Packaging Quantity**||||
||**Bulk**
**(Bag)**|**Tray**|**Box**|**Reel**|
|**2029-xx-SMLF**|250||1000||
|**2029-xx-SM-RPLF**||||500|
## **-RP**
Reel is 33 cm in diameter and 3 cm wide.
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12.00
2.00 ± 0.10 (.536)
(.079 ± .004) MIN.
(.016 ± .002)0.40 ± 0.05 (.157)4.00 (.059)1.50DIA. (.059 +.004/-.000)1.5 +0.1/DIA.-0.0 A (.069 ± .004)1.75 ± 0.1
0.30 8.2
R (.012) MAX. (.323)
7.5 ± 0.1
(.295 ± .004)
6.7
(.331)8.4 (.264) (.339)8.6 R (.020)0.5 TYP. A (.630 +.012/-.004)16.0 +0.3/-0.1
SECTION A-A 10.1
(.398)
DIMENSIONS: MM Unless otherwise specified, tolerances in decimals
(INCHES) are .X ± 0.3, .XX ± 0.15 for lengths in millimeters and ±1 ° for degrees.
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Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116 **Asia-Pacific: EMEA:** Tel: +36 88 520 390 • Fax: +36 88 520 211 **The Americas:** Tel: +1-951 781-5500 • Fax: +1-951 781-5700 **www.bourns.com**
REV. 02/16 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.
## Links
- [View this product on Novapart](https://novapart.co/products/2029-42-SM-RPLF/gas-discharge-tube-gdt-heavy-duty-2029-420-v-2)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/bourns/2029-42-sm-rplf/gas-discharge-tube-420v-smd/dp/2495071)
---
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