This document describes the features and characteristics of the 1 BB 619 Silicon Variable Capacitance Diode from Dinghao Semiconductor Group, which is used for tuning extended frequency bands in VHF TV/VTR tuners.
The BB 619 is a silicon variable capacitance diode intended for tuning extended frequency bands in VHF TV/VTR tuners. It is supplied in a SOD‑123 surface‑mount package (tape and reel) and is identified by the ordering code Q62702‑B570.
Key specifications include a reverse voltage rating of 30 V (35 V for a 5 kΩ load), a forward current of 20 mA, operating temperature range from –55 °C to +150 °C, and a typical capacitance of 36 pF at 1 MHz with 1 V bias. Thermal resistance is less than 450 K/W, and series resistance is 0.6 Ω.
| Reverse voltage (Vr) | 30 V |
|---|---|
| Reverse voltage (Vem, R=5 kΩ) | 35 V |
| Forward current (Ir) | 20 mA |
| Operating temperature range (Top) | –55 °C … +150 °C |
| Storage temperature range (Tsig) | –55 °C … +150 °C |
| Junction‑to‑ambient thermal resistance (Rin) | < 450 K/W |
It can conduct a forward current of up to 20 mA.