BF991 is a N-channel dual-gate MOS-FET produced by Philips company. Its features are overvoltage protection, and it is used in VHF television tuners and FM tuners.
This document is a product specification datasheet for the Philips BF991, an N-channel dual-gate MOS-FET. It details the device's features, including protection against excessive input voltage surges via integrated back-to-back diodes, and lists applications such as VHF television tuners, FM tuners, and professional communication equipment. The datasheet provides a pinning diagram and a simplified outline of the SOT143 microminiature package.
| Junction temperature | 150 °C |
|---|---|
| Noise figure | 2 dB |
The BF991 is suitable for VHF applications such as VHF television tuners, FM tuners, and professional communication equipment.
It is protected by integrated back-to-back diodes between the gates and the source.