Key facts
- Brand
- Siemens
- Model
- BB 640
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-04-05
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Siemens BB 640 Silicon Variable Capacitance Diode Datasheet
Datasheet 2 pages · 44 KB · EN
This datasheet describes the Siemens BB 640 silicon variable capacitance diode, including its ordering code, pin configuration, and package type (SOD‑323, tape and reel). It provides the maximum ratings such as reverse voltage, forward current, and temperature limits.
The electrical characteristics section gives typical and maximum values for reverse current, diode capacitance at various bias voltages and frequencies, series resistance, inductance, and capacitance matching. All values are specified at 25 °C unless otherwise noted.
Siemens BB 640 specifications
| Maximum reverse voltage (Vr) | 30 V |
|---|---|
| Maximum forward current (Ir) | 20 mA |
| Operating temperature range | -55 °C … +150 °C |
| Junction‑ambient thermal resistance (Rja) | < 450 K/W |
| Series resistance (rs) | 1.15 Ω |
| Series inductance (Ls) | 2 nH |
| Capacitance ratio (cn) | 19.5 – 25 |
| Capacitance matching tolerance | ±2.5 % |
All Siemens BB 640 documents by type
Datasheet 2
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum reverse voltage for the BB 640 diode?
The maximum reverse voltage is 30 V.
What forward current rating does the BB 640 support?
It can handle a forward current of up to 20 mA.