VARISTOR is a polycrystalline ceramic body consisting of semi conducting zinc-oxide (ZnO) grains and second phase(Including) Bi2O3,Sb2O3, MnO, CoO, etc) Located at the joints of the grains, it’s called varistor (variable resistor)
20D
Introduction
General specifications
- Size _ 20D
- Varistors Voltage_18Vdc to 1800Vdc
- Max. Energy (10/1000uS)_11Joule to 860Joule(high surge)
- Working Temp. Range_-40℃to+85℃
- Max. Peak Current (8/20uS)_2000Amps to 10000Amps(high surge)
- Varistors Tolerance_±10%, ±15%
Part numbering system
Example
| VCR | 20 | D | 471 | K | A | B | J |
| ①~③ | ④~⑤ | ⑥ | ⑦~⑨ | ⑩ | ⑪ | ⑫ | ⑬ |
①~③
| Code | Series |
| VCR |
④~⑤
| Code | ELEMENT DIA. |
| 20 | ∮20.0mm |
⑤
| Code | Type |
| D | Disc |
⑦~⑨
| Code | Voltage |
| 330 | 33V |
| 471 | 470V |
⑩
| Code | Tolerance |
| K | ±10% |
| L | ±15% |
⑪
| Code | Lead style |
| A | Straight Long |
| B | Outside Crimp Short |
| C | Vertical Crimp |
| D | Straight Short |
| E | Outside Crimp Long |
| F | Cust. Spec. |
⑫
| Code | Package |
| B | Bulk |
| R | Reel |
| A | T/Box |
⑬
| Code | Extra |
| − | Standard |
| J | High Surge |
Download
| Name | |
|---|---|
| 20D Series |  20D_20221214.pdf |
| Dimension (05D~25D Series) | Dimension-05-25D_20221213.pdf |
| Taping Specification (05D~20D Series) | VCR-Taping_20211005.pdf |