BB 669 is a silicon tuning diode produced by Semiconductor Group. It features high capacitance ratio, low series resistance, and an extremely small plastic SMD package.
The BB 669 is a silicon tuning diode designed for VHF 2‑band hyperband TV tuners. It offers a very high capacitance ratio, low series resistance, and an extremely small SMD package (SOD‑323) with excellent uniformity due to an in‑line matching assembly procedure.
The datasheet lists key specifications such as a reverse voltage rating of 30 V, peak reverse voltage of 35 V, forward current of 20 mA, and series resistance of 0.85 Ω at 8 V and 470 MHz. Detailed AC and DC characteristics, including diode capacitance at various bias voltages and frequencies, are also provided.
| Reverse voltage (Va) | 30 V |
|---|---|
| Forward current (Ie) | 20 mA |
| Operating temperature range | -55 ...4150 °C |
| Storage temperature (Tstg) | -55 ...+4150 °C |
| Reverse current at Va=30 V | 10 nA |
| Reverse current at Va=30 V, Ta=85 °C | 200 nA |
| Series inductance (Ls) | 1.4 nH |
The BB 669 diode is rated for a maximum reverse voltage of 30 V.
The diode can conduct a forward current of up to 20 mA.