Key facts
- Brand
- Philips
- Model
- BB909A
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-04-05
Start here
Philips BB909A / BB909B VHF Variable Capacitance Diodes Datasheet
The BB909A and BB909B are VHF variable capacitance diodes offered by Philips Semiconductors. They are hermetically sealed, leaded‑glass devices in an SOD68 (DO‑34) package and are intended for electronic tuning in VHF television tuners and VCO applications.
Key specifications include a maximum reverse voltage of 30 V, forward current rating of 20 mA, and operating junction temperature from –55 °C to +100 °C. Capacitance values range from about 31 pF at 1 V bias to 2.6–3 pF at 28 V, with a capacitance‑ratio tolerance of 12‑15 and matching tolerance of 2.5 %. The datasheet also provides graphical data for capacitance, reverse current, and temperature coefficients.
Philips BB909A specifications
| Maximum reverse voltage | 30 V |
|---|---|
| Maximum forward current | 20 mA |
| Operating junction temperature range | -55 °C to +100 °C |
| Capacitance (BB909A) at 1 V, 1 MHz | 31 pF |
| Capacitance (BB909A) at 3 V, 1 MHz | 23 pF |
| Capacitance (BB909A) at 28 V, 1 MHz | 2.6–3 pF |
| Capacitance (BB909B) at 1 V, 1 MHz | 33.5 pF |
| Capacitance ratio | 12–15 |
| Capacitance matching tolerance | 2.5 % |
Source: Philips BB909A / BB909B VHF Variable Capacitance Diodes Datasheet
All Philips BB909A documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum reverse voltage for the BB909A and BB909B diodes?
The diodes are rated for a maximum reverse voltage of 30 V.
From: Philips BB909A / BB909B VHF Variable Capacitance Diodes Datasheet
What forward current rating do the diodes support?
They can handle a continuous forward current of up to 20 mA.
From: Philips BB909A / BB909B VHF Variable Capacitance Diodes Datasheet
What package type are the BB909A and BB909B diodes supplied in?
They are supplied in a hermetically sealed leaded‑glass SOD68 (DO‑34) package.
From: Philips BB909A / BB909B VHF Variable Capacitance Diodes Datasheet
What are the typical applications for these VHF variable capacitance diodes?
They are used for electronic tuning in VHF television tuners (band B up to 460 MHz) and voltage‑controlled oscillators.
From: Philips BB909A / BB909B VHF Variable Capacitance Diodes Datasheet