BB 620 is a silicon variable capacitance diode produced by Dinghao Semiconductor. It is suitable for Hyperband TV/VTR tuners. The maximum reverse voltage is 30V, the maximum forward current is 20mA, the operating temperature range is -55℃ to +125℃, the storage temperature range is -55℃ to +150℃, and the thermal resistance is ≤450K/W.
The BB 620 is a silicon variable capacitance diode intended for use in Hyperband TV/VTR tuners. The document lists its maximum ratings, electrical parameters, and package details.
Key specifications include a reverse voltage rating of 30 V, forward current of 20 mA, operating temperature range from –55 °C to +125 °C, and capacitance values that vary with bias voltage.
| Reverse voltage (Vr) max | 30 V |
|---|---|
| Forward current (Ir) max | 20 mA |
| Operating temperature range (Top) | -55 °C to +125 °C |
| Storage temperature range (Tsig) | -55 °C to +150 °C |
| Junction‑to‑ambient thermal resistance (Rinsa) | < 450 K·W |
| Reverse current (Ir) at 30 V, 85 °C | 200 nA |
| Capacitance (Cr) at Va=1 V, f=1 MHz | 62‑76 pF |
| Capacitance (Cr) at Va=28 V, f=1 MHz | 2.9‑3.4 pF |
| Capacitance ratio (cn) | 19.5‑25 |
| Capacitance matching (ACT) | 2.5 % |
| Series resistance (rs) | 1.3 Ω |
| Series inductance (Ls) | 2.8 nH |
The BB 620 diode is rated for a maximum reverse voltage of 30 V.
The diode can handle a forward current up to 20 mA.
It operates from –55 °C to +125 °C.
At 1 V bias the capacitance is 62‑76 pF, and at 28 V bias it is 2.9‑3.4 pF (measured at 1 MHz).