BB 914 is a silicon variable capacitor diode from Dinghao. It is suitable for FM radio tuners with extended frequency band, and features high tuning ratio, low supply voltage (car radio), monolithic chip (common cathode) for perfect dual diode tracking, good linearity of C-V curve, and high figure of merit.
The BB 914 is a silicon variable capacitance diode designed for FM radio tuners with an extended frequency band. It offers a high tuning ratio, low supply voltage, and good linearity of the C‑V curve, making it suitable for car radio applications.
Key electrical parameters include reverse voltage, forward current, temperature ranges, capacitance values at various bias voltages, and series resistance. The device is supplied in a SOT‑23 package and is intended for use where precise capacitance tuning is required.
| Maximum reverse voltage (Ve) | 18 V |
|---|---|
| Peak reverse voltage (Vam) | 20 V |
| Forward current (Ie) | 50 mA |
| Operating temperature range | -55 °C to +125 °C |
| Storage temperature range | -55 °C to +150 °C |
| Junction‑to‑ambient thermal resistance | < 600 K/W |
The diode can withstand a reverse voltage of up to 18 V.
The forward current is limited to 50 mA.
It operates from –55 °C up to +125 °C.