BB669/BB689 is a tuning diode from Dinghao. It is mainly used in VHF 2-Band-hyperband-TV-tuners. It has a very high capacitance ratio and low series resistance. Its specifications and models are BB669, BB689, and BB689-02V. The package forms are SOD323, SCD80, and SC79. The maximum reverse voltage is 30V, the peak reverse voltage is 35V, the maximum working current is 20mA, and the working temperature range is -55℃ to 150℃. The storage temperature range is -55℃ to 150℃.
The BB669, BB689 and BB689‑02V are silicon tuning diodes designed for VHF 2‑band hyperband TV tuners. They provide very high capacitance ratios, low series resistance, and excellent uniformity thanks to an in‑line matching assembly procedure.
The document lists maximum ratings, DC and AC electrical characteristics, capacitance versus voltage curves, and temperature coefficients, enabling designers to select the appropriate diode for their RF tuning applications.
| Diode reverse voltage (Vp) | 30 V |
|---|---|
| Peak reverse voltage (VeRM) | 35 V |
| Forward current (Ir) | 20 mA |
| Operating temperature range | -55 °C … 150 °C |
| Storage temperature range | -55 °C … 150 °C |
| Diode capacitance at 1 V, 1 MHz | 51 pF (min) – 61.5 pF (max) |
| Series resistance (Rs) | 0.85 Ω |
The maximum reverse voltage (Vp) is 30 V.
They are rated for a forward current of 20 mA.