Pre-biased PNP for low-power switching
The BCR 162F E6327: The Infineon BCR 162F is a PNP pre-biased digital transistor in a SOT-723 surface-mount package. It integrates two 4.7 kOhm resistors — one in series with the base, one between base and emitter — so the part switches directly from a logic output without external bias components. Rated for a maximum collector current of 100 mA and a collector-emitter breakdown voltage of 50 V, it handles small relay coils, LED indicators, and level-shifting interfaces common in industrial and consumer boards.
Switching speed and saturation
Transition frequency is 200 MHz, which is fast enough for low-frequency PWM or logic-level switching up to several megahertz. The 300 mV saturation voltage at 10 mA collector current and 500 µA base drive keeps conduction losses low in the on-state.
Sourcing an obsolete part
The BCR 162F is listed as obsolete.
