BB 641 is a variable capacitance diode produced by Dinghao Electronics. It is mainly used in VHF hyperband TV/TR tuners. This diode has the characteristics of high capacitance ratio and low series resistance.
The BB 641 is a silicon variable capacitance diode intended for VHF hyperband TV/TR tuners, offering a high capacitance ratio and low series resistance. It is supplied in a SOD‑323 surface‑mount package.
Key specifications include a reverse voltage rating of 30 V (35 V for R > 5 kΩ), forward current of 20 mA, operating temperature range from –55 °C to +150 °C, and a typical capacitance of 69 pF at 1 V bias and 1 MHz. The device also features a junction‑ambient thermal resistance below 450 K/W and a series inductance of about 1.8 nH.
| Reverse voltage (Va) | 30 V |
|---|---|
| Reverse voltage (R > 5 kΩ) (Vom) | 35 V |
| Forward current (Ir) | 20 mA |
| Operating temperature range | -55 °C to +150 °C |
| Junction‑ambient thermal resistance (Risa) | < 450 K/W |
| Typical diode capacitance (1 V, 1 MHz) | 69 pF |
| Series inductance (L) | 1.8 nH |
| Package type | SOD‑323 |
The maximum reverse voltage (Va) is 30 V.
Typical capacitance is 69 pF.
It operates from –55 °C up to +150 °C.