BB679 is a silicon variable capacitance diode produced by Dinghao Electronics. It is mainly used in wideband CATV tuners and has the characteristics of high capacitance ratio (C1V/C28V typical value of 18.3), low series resistance and excellent uniformity and matching.
The BB679-02V is a silicon variable capacitance diode designed for tuning wide‑band CATV tuners. It offers a high capacitance ratio, low series resistance, and excellent uniformity due to an in‑line matching assembly procedure.
The document provides maximum ratings, DC and AC electrical characteristics, temperature coefficients, and graphs of reverse current versus temperature and voltage, enabling engineers to evaluate the diode for their applications.
| Diode reverse voltage (Vp) | 30 V |
|---|---|
| Forward current (Ir) | 20 mA |
| Operating temperature range | -55 … 125 °C |
| Storage temperature range | -55 … 150 °C |
| Series resistance (typical) | 0.6 Ω |
The diode can withstand a reverse voltage of up to 30 V.
The forward current is limited to 20 mA.
It operates from –55 °C to +125 °C.