Pre-biased NPN — one part replaces a BJT plus two resistors
The BCR148E6393HTSA1 is an NPN pre-biased transistor from Infineon, integrating a 47 kΩ base resistor (R1) and a 47 kΩ emitter-base resistor (R2) in a single SOT-23 package. This digital transistor eliminates two discrete passives from the BOM, shrinking the footprint for switching and interface loads up to 100 mA collector current and 50 V collector-emitter breakdown.
Last Buy — secure inventory or plan a drop-in
The BCR148E6393HTSA1 carries a Last Buy lifecycle status. That means Infineon has announced end-of-production; the final ordering window is closing. If this part is on your BOM, now is the time to buy your lifetime volume or qualify a pin-compatible alternative before the channel dries up.
With a 100 mA continuous collector rating and a 200 mW power dissipation ceiling in the SOT-23 body, this part is sized for low-to-moderate drive — think GPIO level translation, relay coil pre-drive, or LED string switching. The 50 V Vce breakdown gives headroom for 24 V industrial rails. The 100 MHz transition frequency is fine for switching up to a few megahertz; don't push it past that without checking the turn-off delay.