Die Kapazitätsdiode oder Varicap, auch Varaktor oder Abstimmdiode genannt, ist ein elektronisches Halbleiter-Bauteil. Durch Änderung der angelegten Spannung lässt sich eine Variation der Kapazität von 10:1 erreichen. Somit steht eine elektrisch steuerbare Kapazität zur Verfügung, die die früher üblichen, erheblich größeren Drehkondensatoren weitgehend ersetzt hat.Kapazitätsdiode funktion
Der p-n-Übergang einer Diode hat eine Kapazität, die von der Breite der Raumladungszone abhängig ist. Wird eine Diode in Sperrrichtung betrieben, so entsteht am p-n-Übergang eine Ladungsträgerverarmungszone, an der sich auch ein elektrisches Feld, bedingt durch die fehlenden Ladungsträger, aufbaut. Mit steigender Spannung vergrößert sich die Breite der ladungsfreien Zone, damit nimmt die Kapazität ab. Durch geeignete Dotierung können Kapazitäten im Bereich von 3 pF bis 300 pF erreicht werden. Die maximale Sperrspannung beträgt etwa 30 V.
| Artikelnummer | Hersteller | Beschreibung |
|---|---|---|
| 1SV232 | Toshiba Semiconductor | VARIABLE CAPACITANCE DIODE (CATV TUNING) |
| 1SV239 | Toshiba Semiconductor | VARIABLE CAPACITANCE DIODE RADIO) |
| 1SV228 | Toshiba Semiconductor | VARIABLE CAPACITANCE DIODE (ELECTRONIC TUNING APPLICATIONS RECEIVERS) |
| 1SV160 | Toshiba Semiconductor | VARIABLE CAPACITANCE DIODE APLICATION RECEIVER) |
| 1SV285 | Toshiba Semiconductor | VARIABLE CAPACITANCE DIODE BAND RADIO) |
| BB535 | Siemens Semiconductor Group | Silicon Variable Capacitance Diode TV/TR tuners Large capacitance ratio, series resistance) |
| KV1560NT | TOKO, | VARIABLE CAPACITANCE DIODE |
| KV1590NT | TOKO, | VARIABLE CAPACITANCE DIODE |
| HVY202A | Leshan Radio Company | Variable Capacitance Diode Electronic Tuning |
| SDV703WK | corp | Variable Capacitance Diode |
| HVC200A | Hitachi Semiconductor | Variable Capacitance Diode tuner |
| HVC202A | Hitachi Semiconductor | Variable Capacitance Diode UHF/VHF tuner |
| HVC202B | Hitachi Semiconductor | Variable Capacitance Diode UHF/VHF tuner |
| HVC300A | Hitachi Semiconductor | Variable Capacitance Diode tuner |
| HVC300B | Hitachi Semiconductor | Variable Capacitance Diode tuner |
| HVC306 | Hitachi Semiconductor | Variable Capacitance Diode tuner |
| HVC306A | Hitachi Semiconductor | Variable Capacitance Diode tuner |
| HVC306B | Hitachi Semiconductor | Variable Capacitance Diode tuner |
| HVC308A | Hitachi Semiconductor | Variable Capacitance Diode tuner |
| HVC350B | Hitachi Semiconductor | Variable Capacitance Diode |
| HVC355 | Hitachi Semiconductor | Variable Capacitance Diode |
| HVC355B | Hitachi Semiconductor | Variable Capacitance Diode |
| HVC358B | Hitachi Semiconductor | Variable Capacitance Diode |
| HVC359 | Hitachi Semiconductor | Variable Capacitance Diode VCXO |
| HVD359 | Hitachi Semiconductor | Variable Capacitance Diode VCXO |
| 1SV103 | Toshiba Semiconductor | Variable Capacitance Diode, Radio Band Tuning Applications |
| FMMV105G | Zetex Semiconductors | SILICON PLANAR VARIABLE CAPACITANCE DIODE |
| FMMV109 | Zetex Semiconductors | SOT23 SILICON PLANAR VARIABLE CAPACITANCE DIODE |
| KV1420 | TOKO, | VARIABLE CAPACITANCE DIODE |
| KV1420F2 | TOKO, | VARIABLE CAPACITANCE DIODE |
| KV1420TL | TOKO, | VARIABLE CAPACITANCE DIODE |
| KDV147 | KEC(Korea Electronics) | VARIABLE CAPACITANCE DIODE SILICON EPITAXIAL PLANAR DIODE(FM RADIO BAND TUNING |
| KDV1470 | KEC(Korea Electronics) | VARIABLE CAPACITANCE DIODE SILICON EPITAXIAL PLANAR DIODE |
| KDV1471 | KEC(Korea Electronics) | VARIABLE CAPACITANCE DIODE SILICON EPITAXIAL PLANAR DIODE |
| KDV1472 | KEC(Korea Electronics) | VARIABLE CAPACITANCE DIODE SILICON EPITAXIAL PLANAR DIODE(FM RADIO BAND TUNING) |
| KV1470 | TOKO, | VARIABLE CAPACITANCE DIODE |
| KV1470F7 | TOKO, | VARIABLE CAPACITANCE DIODE |
| KV1470TL | TOKO, | VARIABLE CAPACITANCE DIODE |
| KV1471E | TOKO, | VARIABLE CAPACITANCE DIODE |
| KV1471EA | TOKO, | VARIABLE CAPACITANCE DIODE |
| KV1471ETR | TOKO, | VARIABLE CAPACITANCE DIODE |
| KV1471K | TOKO, | VARIABLE CAPACITANCE DIODE |
| KV1471KA | TOKO, | VARIABLE CAPACITANCE DIODE |
| KV1471KTR | TOKO, | VARIABLE CAPACITANCE DIODE |
| KDV149 | KEC(Korea Electronics) | VARIABLE CAPACITANCE DIODE SILICON EPITAXIAL PLANAR DIODE(AM RADIO BAND TUNING) |
| KDV152 | KEC(Korea Electronics) | VARIABLE CAPACITANCE DIODE SILICON EPITAXIAL PLANAR DIODE(VCO CB,C/P |
| KDV152M | KEC(Korea Electronics) | VARIABLE CAPACITANCE DIODE SILICON EPITAXIAL PLANAR DIODE(VCO CB,C/P |
| KV1555NT | TOKO, | VARIABLE CAPACITANCE DIODE |
| KDV214 | KEC(Korea Electronics) | VARIABLE CAPACITANCE DIODE SILICON EPITAXIAL PLANAR DIODE(TV TUNING) |
| KDV214E | KEC(Korea Electronics) | VARIABLE CAPACITANCE DIODE SILICON EPITAXIAL PLANAR DIODE(TV TUNING) |
| 1SV215 | Toshiba Semiconductor | VARIABLE CAPACITANCE DIODE (CATV TUNING) |
| 1SV217 | Toshiba Semiconductor | VARIABLE CAPACITANCE DIODE (CATV TUNING) |
| 1SV225 | Toshiba Semiconductor | VARIABLE CAPACITANCE DIODE (ELECTRONIC TUNING APPLICATIONS RECEIVERS) |
| 1SV230 | Toshiba Semiconductor | VARIABLE CAPACITANCE DIODE (CATV CONVERTER TUNING) |
| 1SV242 | Toshiba Semiconductor | VARIABLE CAPACITANCE DIODE WIDE BAND TUNING) |
| 1SV293 | Toshiba Semiconductor | VARIABLE CAPACITANCE DIODE BAND RADIO) |
| 1SV302 | Toshiba Semiconductor | VARIABLE CAPACITANCE DIODE (CATV TUNING) |
| 1SV304 | Toshiba Semiconductor | VARIABLE CAPACITANCE DIODE BAND RADIO) |
| KDV350 | KEC(Korea Electronics) | VARIABLE CAPACITANCE DIODE SILICON EPITAXIAL PLANAR DIODE(VCO) |
| KDV350E | KEC(Korea Electronics) | VARIABLE CAPACITANCE DIODE SILICON EPITAXIAL PLANAR DIODE(VCO) |
| HVU200 | Leshan Radio Company | Variable Capacitance Diode Electronic Tuning |
| HVU200A | Hitachi Semiconductor | Variable Capacitance Diode Electronic Tuning |
| HVU306A | Hitachi Semiconductor | Variable Capacitance Diode tuner |
| HVU306B | Hitachi Semiconductor | Variable Capacitance Diode tuner |
| HVU308A | Hitachi Semiconductor | Variable Capacitance Diode tuner |
| HVU350B | Hitachi Semiconductor | Variable Capacitance Diode |
| HVU355B | Hitachi Semiconductor | Variable Capacitance Diode |
| NTE610 | Electronics | Voltage Variable Capacitance Diode (Tuning Diode) |
| NTE614 | Electronics | Voltage Variable Capacitance Diode (Tuning Diode) |
| 1T408 | Sony Corporation | Variable Capacitance Diode |
| 1SV123 | Toshiba Semiconductor | VARIABLE CAPACITANCE DIODE |
| HVU202 | Hitachi Semiconductor | Variable Capacitance Diode Electronic Tuning |
| HVU202A | Hitachi Semiconductor | Variable Capacitance Diode Electronic Tuning |
| HVU202B | Hitachi Semiconductor | Variable Capacitance Diode UHF/VHF tuner |
| BB132 | Philips Semiconductors | variable capacitance diode |
| KV1410 | TOKO, | VARIABLE CAPACITANCE DIODE |
| KV1410F1 | TOKO, | VARIABLE CAPACITANCE DIODE |
| KV1410TL | TOKO, | VARIABLE CAPACITANCE DIODE |
| KV1450 | TOKO, | VARIABLE CAPACITANCE DIODE |
| KV1450F5 | TOKO, | VARIABLE CAPACITANCE DIODE |