BB837/BB857 is a silicon tuning diode produced by Dinghao company for satellite indoor units, which has high capacitance ratio, low series resistance, excellent uniformity and matching
This datasheet provides the key specifications for Infineon's BB837 and BB857 silicon tuning diodes, which are intended for SAT‑indoor‑units. It lists the package types, marking codes, and the high‑capacitance ratio and low series resistance that make these devices suitable for precise tuning applications.
The document includes maximum ratings, electrical characteristics at 25 °C, DC and AC parameters, as well as detailed capacitance versus voltage curves. Temperature ranges for operation and storage are also specified, allowing designers to assess suitability for various environmental conditions.
| Reverse voltage (Ve) | 30 V |
|---|---|
| Peak reverse voltage (Vem) | 35 V |
| Forward current (If) | 20 mA |
| Operating temperature range | -55 °C to 150 °C |
| Storage temperature range | -55 °C to 150 °C |
| Diode capacitance at 1 V, 1 MHz | ≈6 pF |
The maximum reverse voltage is 30 V.
The diodes are rated for a forward current of 20 mA.
They operate from –55 °C up to 150 °C.
Typical capacitance is about 6 pF.