# Gas Discharge Tube (GDT), BK1 Series, 140 V, Axial Leaded, 3 kA

![Product image](https://novapart.co/image/farnell:4071924/)

**URL**: https://novapart.co/products/BK13000702/gas-discharge-tube-gdt-bk1-series-140-v-axial
**SKU**: BK13000702
**Manufacturer**: YAGEO
**Category**: Circuit Protection || Gas Discharge Tubes - GDT
**Price**: €0.1840
**Stock**: 10+
**Lead Time**: 225 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (15-Jan-2019) |
| Product Range | BK1 Series |
| Gdt Case Style | Axial Leaded |
| Dc Breakover Voltage | 140V |
| Impulse Discharge Current | 3kA |
| Impulse Sparkover Voltage | - |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4071924/)

DATA SHEET SPARK GAP PROTECTORS POWER SUPPLIES BK1  series **RoHS compliant & Halogen free** 

Circuit Protection 

Product Specification 

SPARK GAP 

**BK1 SERIES** 

## **Spark Gap (SPG) Data Sheet** 

## **Features** 

## ■ Approximately zero leaking current before clamping voltage 

- Less decay at on/off state. 

- High capability to withstand repeated lightning strikes. 

- Low electrode capacitance(≤0.8pF) and high isolation(≥100MΩ). 

- RoHS compliant. 

- Bilateral symmetrical. 

- Temperature, humidity and lightness insensitive. 

- Operating temperature: -40℃ ~ +85℃ 

- Storage temperature: -40℃ ~ +125℃ 

- Meets MSL level 1, per J-STD-020 

- Safety certification:  UL 

## **Applications** 

- Power Supplies 

- Motor sparks eliminating 

- Relay switching spark absorbing 

- Data line pulse guarding 

- Electronic devices requiring UL497A and UL497B compliant 

- Telephone/Fax/Modem 

- High frequency signal transmitters/receivers 

- Satellite antenna 

- Radio amplifiers 

- Alarm systems 

- Cathode ray tubes in Monitors/TVs 

## **Dimensions** 

Symbol Dimension (mm) Color code 1 Color code 2 L 4.0±0.5 Color code 3 D d L1 28.0±3.0 ~~= Cf~~ D Φ3.1±0.5 L1 L L1 ~~ee~~ d Φ0.5±0.05 

www.yageo.com 

Feb. 23, 2021 V.0 

Circuit Protection 

Product Specification 

SPARK GAP 

**BK1 SERIES** 

## **Electrical Characteristics** 

|Part Number|DC<br>Spark-over<br>Voltage|Minimum<br>Insulation<br>Resistance|Minimum<br>Insulation<br>Resistance|Maximum<br>Capacitance<br>(1KHz-6VMAX)|Surge<br>Current<br>Capacity<br>(8/20μs)|Surge Life<br>Test|
|---|---|---|---|---|---|---|
||Vs(V)|Test<br>Voltage(V)|IROHM(MΩ)|C(pf)||8/20μs,100A|
|BK12000702<br>~~a~~<br>~~Le~~|140±20%<br>~~ae~~<br>|50<br>~~ee~~<br>|100<br>~~ee~~|0.8<br>~~ee~~|3000A<br>~~ee~~|250 times<br>~~ee~~|
|BK13000702<br>~~a~~<br>~~a~~<br>~~Le|~~<br>~~a~~|140±30%<br>~~ae~~<br>~~|||~~<br>|50<br>~~ee~~<br>~~||~~<br>|100<br>~~ee~~<br>|<br>|0.8<br>~~ee~~<br>|<br>|3000A<br>~~ee~~|250 times<br>~~ee~~<br>~~|~~|
|BK12001002<br>~~Le|~~<br>~~a~~<br>~~Le~~|200±20%<br>~~ae~~<br>~~|||~~<br>~~ee~~|100<br>~~ee~~<br>~~||~~<br>~~ee~~|100<br>~~ee~~<br>|<br>~~ee~~|0.8<br>~~ee~~<br>|<br>~~ee~~|3000A<br>~~ee~~<br>~~ee~~|250 times<br>~~ee~~<br>~~|~~<br>~~ee~~|
|BK12001502<br>~~Le |~~<br>~~a ~~<br>~~Le~~<br>|<br>~~a~~|300±20%<br>~~ae ~~<br>~~| ||~~<br> ~~ee~~<br>~~|~~<br>~~||~~<br>|100<br> ~~ee~~<br>~~||~~<br>~~ee~~<br>~~||~~|100<br>~~ee~~<br>|<br>~~ee~~<br>~~|~~|0.8<br>~~ee~~<br>|<br>~~ee~~<br>||3000A<br>~~ee~~<br>~~ee~~|250 times<br>~~ee~~<br>~~|~~<br>~~ee~~|
|BK12002002<br> <br>~~Le~~<br>|<br>~~a~~<br>~~Le~~|400±20%<br> ~~ee~~<br>~~|~~<br>~~||~~<br>~~a~~<br>|250<br>~~ee~~<br>~~||~~<br>~~ee~~|100<br>~~ee~~<br>~~|~~<br>~~ee~~|0.8<br>~~ee~~<br>|<br>~~ee~~|3000A<br>~~ee~~<br>~~ee~~|250 times<br>~~ee~~<br>~~ee~~|
|BK12002502<br> <br>~~Le~~<br>|<br>~~a ~~<br>~~Le~~<br>~~a~~|500±20%<br> ~~ee~~<br>~~|~~<br>~~||~~<br> ~~a~~<br>~~|~~<br>||250<br>~~ee ~~<br>~~||~~<br>~~ee~~|100<br> ~~ee ~~<br>~~|~~<br>~~ee~~<br>~~ee~~|0.8<br> ~~ee~~<br>|<br>~~ee~~<br>~~ee~~|3000A<br>~~ee~~<br>~~ee~~<br>~~ee~~|250 times<br>~~ee~~<br>~~ee~~<br>~~ee~~|
|BK12003002<br> <br>~~Le~~<br>~~a~~|600±20%<br> ~~a~~<br>~~|~~<br>||250<br>~~ee~~|100<br>~~ee~~<br>~~ee~~|0.8<br>~~ee~~<br>~~ee~~|3000A<br>~~ee~~<br>~~ee~~|250 times<br>~~ee~~<br>~~ee~~|
|BK12003502<br> <br>~~Le ~~<br>~~a~~|700±20%<br> ~~a~~<br> ~~|~~<br>|<br>~~a~~|250<br>~~ee ~~|100<br> ~~ee ~~<br>~~ee ~~|0.8<br> ~~ee~~<br> ~~ee ~~|3000A<br>~~ee~~<br> ~~ee ~~|250 times<br>~~ee~~<br> ~~ee~~|



## **Color Code** 

|Part Number|Color Code 1|Color Code 2|Color Code 3|
|---|---|---|---|
|BK12000702|Black|Yellow|-|
|BK13000702|Black|Yellow|-|
|BK12001002|Red|-|-|
|BK12001502|Orange|-|-|
|BK12002002|Yellow|-|-|
|BK12002502|Green|-|-|
|BK12003002|Blue|-|-|
|BK12003502|Purple|-|-|



www.yageo.com 

Feb. 23, 2021 V.0 

Circuit Protection 

Product Specification 

SPARK GAP 

|Items|Test Method|Standard|
|---|---|---|
|DC Spark-over<br>Voltage<br>~~+~~|Measure starting discharge voltage (Vs) by<br>gradually increasing applied DC voltage. Test<br>current is 0.5mA max. And the DC voltage<br>ascends up within 100V/second.<br>~~+~~|Meet specified value.<br>~~+~~|
|Insulation<br>Resistance<br>~~+~~|Measure the insulation resistance across the<br>terminal at regular voltage. But the test voltage<br>doesn’t over the DC spark-over voltage.<br>~~+~~||
|Capacitance<br>~~+~~|Measure the electrostatic capacitance by<br>applying a voltage of less than 6V (at 1KHz)<br>between terminals.<br>~~+~~||
|Static Life|10KV with 1500pf condenser is discharged<br>through 0Ω resistor. 200 times at an interval of<br>10sec.|∣△Vs/Vs∣≤30%<br>Characteristics of other items must<br>meet the specified value.|
|Surge Current<br>Capacity|1.2/50μs & 8/20μs, 3000A, electrically<br>connected with a resistor (1~2 Ω), ±5 times,<br>each time interval 60 seconds. Thereafter,<br>outer appearance shall be visually examined.|No crack and no failures|
|Cold Resistance<br>~~es~~|Measurement after -40℃/1000 HRS & normal<br>temperature/2 HRS.<br>~~es~~|Features are conformed to rated<br>spec.|
|Heat Resistance<br>~~es~~<br>~~es~~|Measurement after 125℃/1000 HRS & normal<br>temperature/2 HRS.<br>~~es~~<br>~~es~~||
|Humidity Resistance<br>~~es~~|Measurement after humidity 90~95℃(45℃)<br>/1000 HRS & normal temperature/2 HRS.<br>~~es~~||
|Temperature Cycle<br>~~pp~~|10 times repetition of cycle -40℃/30min<br>→normal, temp/2 min →125℃/30min,<br>measurement after normal temp/2 HRS.<br>~~pp~~||
|Solder Ability|Apply flux and immerse in molten solder<br>230±5℃for 3sec up to the point of 1.5mm<br>from body. Check for solder adhesion.|Lead wire is evenly covered by<br>solder.|
|Solder Heat<br>~~ee~~|Measurement after lead wire is dipped up to<br>the point of 1.5mm from body into 260±5℃<br>solder for 10sec.|Conformed to rated spec.|
|Pull Strength<br>~~ee~~|Apply 0.5kg load for 10sec.|Lead shall not pull out to snap.|
|Flexural Strength<br>~~ee~~|Bend lead wire at the point of 2mm from body<br>under 0.25 load and back to its original point.<br>Repeat 1 time.||



www.yageo.com 

Circuit Protection 

Product Specification 

SPARK GAP 

**BK1 SERIES** 

## **Recommended Soldering Conditions** 

**==> picture [489 x 228] intentionally omitted <==**

**----- Start of picture text -----**<br>
Flow Soldering Conditions  Reflow Soldering Conditions<br>Air Priheat Soldering Cooling<br>Air Priheat Soldering Cooling<br>260 ℃<br>260 ℃<br>250<br>250 Tet) 4ie<br>△ T<br>△ T<br>200<br>200<br>OY | ee<br>150<br>150 Ar| GE 150~180 ℃ ff [A]<br>150~180 ℃<br>100<br>100<br>50<br>50 PS) ets<br>0<br>0 ce ee 60~120 sec 10 sec. or less<br>60~120 sec 3~4 sec<br>a — 60 sec. or less<br>℃ ) ℃ )Temperature (<br>Temperature (<br>**----- End of picture text -----**<br>


- 1) Time shown in the above figures is measured from the point when chip surface reaches temperature. 

2) Temperature difference in high temperature part should be within 110℃. 

3) After soldering, do not force cool, allow the parts to cool gradually. 

## Hand Soldering 

Solder iron temperature: 350±5℃ 

Heating time: 3 seconds max. 

## General attention to soldering 

● High soldering temperatures and long soldering times can cause leaching of the termination, decrease in adherence strength, and the change of characteristic may occur. 

- For soldering, please refer to the soldering curves above. However, please keep exposures to temperatures exceeding 200℃ to fewer than 50 seconds. 

● Please use a mild flux (containing less than 0.2wt% CI). Also, if the flux is water soluble, be sure to wash thoroughly to remove any residue from the underside of components that could affect resistance. 

## Cleaning 

When using ultrasonic cleaning, the board may resonate if the output power is too high. Since this vibration can cause cracking or a decrease in the adherence of the termination, we recommend that you use the conditions below. 

Frequency: 40kHz max. Output power: 20W/liter Cleaning time: 5 minutes max. 

www.yageo.com 

Feb. 23, 2021 V.0 

Circuit Protection 

Product Specification 

SPARK GAP 

**BK1 SERIES** 

## **Packaging** 

**==> picture [520 x 404] intentionally omitted <==**

**----- Start of picture text -----**<br>
Tape<br>Symbol  Dimension (mm)<br>—<br>W  52.0±1.5<br>L D1 a<br>R P  5.0±0.5<br>L1-L2  1.0max.<br>D<br>T  6.0±1.0<br>P<br>Z  1.2max.<br>Z<br>R  Terminals must not project from tape.<br>t t  3.2max.<br>S  0.8max.<br>L1 L2<br>S T T S D  Φ3.6max.<br>W<br>re<br>D1  Φ0.5±0.05<br>re<br>L  4.5max.<br>ee<br>Inner Box<br>A  74.0±5.0<br>ee<br>B  77.0±5.0<br>B<br>I a<br>C  252.0±5.0<br>C<br>A<br>sC F ee Quantity: 1500PCS<br>a<br>**----- End of picture text -----**<br>


SS 

www.yageo.com 

Feb. 23, 2021 V.0 



## Links

- [View this product on Novapart](https://novapart.co/products/BK13000702/gas-discharge-tube-gdt-bk1-series-140-v-axial)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/yageo/bk13000702/spark-gap-protector-1pole-140v/dp/4071924)
---

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