BB 689 is a silicon tuning diode produced by Texas Instruments (TI). It is suitable for VHF 2-Band-hyperband-TV-tuners. It has a very high capacitance ratio, low series inductance and series resistance, and excellent uniformity and matching in an extremely small plastic SMD package.
The BB 689 is a silicon tuning diode intended for VHF 2‑band hyperband TV tuners. It features an extremely small plastic SMD package with excellent uniformity and matching, making it suitable for in‑line matching assemblies.
Key electrical characteristics include a reverse voltage rating of 30 V, peak reverse voltage of 35 V, forward current of 20 mA, and a wide operating temperature range. Detailed capacitance values are provided for various bias voltages at 1 MHz, highlighting the diode's high capacitance ratio and low series resistance and inductance.
| Reverse voltage (V_R) | 30 V |
|---|---|
| Peak reverse voltage (V_RM) | 35 V |
| Forward current (I_F) | 20 mA |
| Operating temperature range | Top - 55 ...4150 °C |
The diode reverse voltage rating is 30 V.
The forward current rating is 20 mA.