The BB 639C is a silicon variable capacitance diode intended for tuning extended frequency band VHF TV and VTR tuners. The document provides the diode's maximum ratings, electrical parameters and temperature characteristics.
Key data include reverse voltage limits, forward current rating, capacitance values at various bias voltages, series resistance and inductance, as well as temperature coefficients. The specifications are presented in tables for quick reference by designers and engineers.
| Maximum reverse voltage (Va) | 30 V |
|---|---|
| Forward current rating | 20 mA |
| Operating temperature range | -55 … 125 °C |
| Storage temperature range | -55 … +150 °C |
| Reverse current (Va=30V, 25°C) | 10 nA (typ.) |
| Reverse current (Vp=30V, 85°C) | 200 nA (max) |
| Series inductance | 1.8 nH |
The maximum reverse voltage (Va) is 30 V.
The diode is rated for a forward current of 20 mA.