Last Buy — plan your BOM move now
Infineon has flagged the BCR116E6327HTSA1 as Last Buy, meaning the final production window is closing. If this part is on your BOM, you need to secure inventory or qualify a drop-in replacement before the last-time-buy deadline passes.
Built-in resistors shrink the BOM
This is an NPN pre-biased transistor in a SOT-23-3 package (PG-SOT23). The base resistor (R1) is 4.7 kΩ and the emitter-base resistor (R2) is 47 kΩ, so you skip two external passives per channel. That saves board area and cuts pick-and-place cost — useful when you have multiple low-side switch positions on a dense board.
50 V, 100 mA — what it handles
Collector-emitter breakdown is 50 V, and continuous collector current is rated 100 mA. That covers small relay coils, indicator LEDs, solenoid drivers, and logic-level interface circuits. The 150 MHz transition frequency means it switches fast enough for most low-speed PWM and signal-level applications. Saturation voltage is 300 mV at 500 µA base and 10 mA collector — low enough to keep dissipation under control at moderate loads.