用于自动频率控制（AFC）和调谐用的小功率二极管称变容二极管。日本厂商方面也有其它许多叫法。通过施加反向电压， 使其PN结的静电容量发生变化。因此，被使用于自动频率控制、扫描振荡、调频和调谐等用途。通常，虽然是采用硅的扩散型二极管，但是也可采用合金扩散型、外延结合型、双重扩散型等特殊制作的二极管，因为这些二极管对于电压而言，其静电容量的变化率特别大。结电容随反向电压VR变化，取代可变电容，用作调谐回路、振荡电路、锁相环路，常用于电视机高频头的频道转换和调谐电路，多以硅材料制作。
| 型号 | 品牌 | 功能描述 |
|---|---|---|
| 1SV232 | Toshiba Semiconductor | |
| 1SV239 | Toshiba Semiconductor | |
| 1SV228 | Toshiba Semiconductor | |
| 1SV160 | Toshiba Semiconductor | |
| 1SV285 | Toshiba Semiconductor | |
| BB535 | Siemens Semiconductor Group | |
| KV1560NT | TOKO, | |
| KV1590NT | TOKO, | |
| HVY202A | Leshan Radio Company | |
| SDV703WK | corp | |
| HVC200A | Hitachi Semiconductor | |
| HVC202A | Hitachi Semiconductor | |
| HVC202B | Hitachi Semiconductor | |
| HVC300A | Hitachi Semiconductor | |
| HVC300B | Hitachi Semiconductor | |
| HVC306 | Hitachi Semiconductor | |
| HVC306A | Hitachi Semiconductor | |
| HVC306B | Hitachi Semiconductor | |
| HVC308A | Hitachi Semiconductor | |
| HVC350B | Hitachi Semiconductor | |
| HVC355 | Hitachi Semiconductor | |
| HVC355B | Hitachi Semiconductor | |
| HVC358B | Hitachi Semiconductor | |
| HVC359 | Hitachi Semiconductor | |
| HVD359 | Hitachi Semiconductor | |
| 1SV103 | Toshiba Semiconductor | |
| FMMV105G | Zetex Semiconductors | |
| FMMV109 | Zetex Semiconductors | |
| KV1420 | TOKO, | |
| KV1420F2 | TOKO, | |
| KV1420TL | TOKO, | |
| KDV147 | KEC(Korea Electronics) | |
| KDV1470 | KEC(Korea Electronics) | |
| KDV1471 | KEC(Korea Electronics) | |
| KDV1472 | KEC(Korea Electronics) | |
| KV1470 | TOKO, | |
| KV1470F7 | TOKO, | |
| KV1470TL | TOKO, | |
| KV1471E | TOKO, | |
| KV1471EA | TOKO, | |
| KV1471ETR | TOKO, | |
| KV1471K | TOKO, | |
| KV1471KA | TOKO, | |
| KV1471KTR | TOKO, | |
| KDV149 | KEC(Korea Electronics) | |
| KDV152 | KEC(Korea Electronics) | |
| KDV152M | KEC(Korea Electronics) | |
| KV1555NT | TOKO, | |
| KDV214 | KEC(Korea Electronics) | |
| KDV214E | KEC(Korea Electronics) | |
| 1SV215 | Toshiba Semiconductor | |
| 1SV217 | Toshiba Semiconductor | |
| 1SV225 | Toshiba Semiconductor | |
| 1SV230 | Toshiba Semiconductor | |
| 1SV242 | Toshiba Semiconductor | |
| 1SV293 | Toshiba Semiconductor | |
| 1SV302 | Toshiba Semiconductor | |
| 1SV304 | Toshiba Semiconductor | |
| KDV350 | KEC(Korea Electronics) | |
| KDV350E | KEC(Korea Electronics) | |
| HVU200 | Leshan Radio Company | |
| HVU200A | Hitachi Semiconductor | |
| HVU306A | Hitachi Semiconductor | |
| HVU306B | Hitachi Semiconductor | |
| HVU308A | Hitachi Semiconductor | |
| HVU350B | Hitachi Semiconductor | |
| HVU355B | Hitachi Semiconductor | |
| NTE610 | Electronics | |
| NTE614 | Electronics | |
| 1T408 | Sony Corporation | |
| 1SV123 | Toshiba Semiconductor | |
| HVU202 | Hitachi Semiconductor | |
| HVU202A | Hitachi Semiconductor | |
| HVU202B | Hitachi Semiconductor | |
| BB132 | Philips Semiconductors | |
| KV1410 | TOKO, | |
| KV1410F1 | TOKO, | |
| KV1410TL | TOKO, | |
| KV1450 | TOKO, | |
| KV1450F5 | TOKO, |