The BFQ221 is an NPN video transistor manufactured by Philips. It is mainly used in buffer stages in high resolution color monitors. The transistor is encapsulated in a SOT54 three-terminal plastic package. The maximum collector-base voltage is 100 V, the maximum collector current is 100 mA, and the maximum total power dissipation is 1.15 W.
This document is a product specification sheet for the BFQ221, an NPN silicon transistor designed primarily for buffer stages in high-resolution color monitors. The device is encapsulated in a 3-lead plastic SOT54 package.
The datasheet provides quick reference data including maximum collector-base voltage (100 V), transition frequency up to 1 GHz, and total power dissipation of 1.15 W. It also includes detailed electrical characteristics such as breakdown voltages, DC current gain, and feedback capacitance, along with package outline dimensions.
| Package Type | 3-lead plastic SOT54 |
|---|---|
| Collector-base voltage (Vcbo) | 100 V |
| Collector current (DC) (Ic) | 100 mA |
| Total power dissipation (Ptot) | 1.15 W |
| Transition frequency (fT) | 1 GHz |
| Feedback capacitance (Cfe) | 1.7 pF |
It is primarily intended for use in buffer stages within high resolution colour monitors.
The maximum total power dissipation is 1.15 W when the temperature is up to 60 °C.
The maximum junction temperature is 150 °C.