The Infineon BCR183E6327HTSA1 is a PNP pre-biased transistor — a digital transistor that integrates two 10 kΩ bias resistors (R1 base, R2 emitter-base) in a single PG-SOT23 package. This eliminates two external resistors from the board, saving placement cost and PCB area in high-volume switching applications. With a collector current rating of 100 mA and a collector-emitter breakdown voltage of 50 V, it handles typical low-side load switching in 5 V and 12 V logic rails, relay drivers, and indicator LED circuits. The 200 MHz transition frequency keeps switching losses low in PWM dimming or solenoid drive up to a few hundred kilohertz.
This part carries a Last Buy lifecycle status. Infineon has announced end-of-life for this product, and the final ordering window is closing. If this transistor is on your BOM, now is the time to secure lifetime buy quantities or qualify a drop-in replacement. The BCR183 base number covers a family of pre-biased PNP devices; a pin-compatible sibling with the same 10 kΩ / 10 kΩ resistor divider and SOT-23 footprint is the most direct path to a second source.
Switching performance — Vce(sat) and gain at load
Minimum DC current gain is 30 at 5 mA collector current and 5 V Vce, which gives enough headroom for most load-switching designs. Collector cutoff leakage is 100 nA maximum, clean enough for battery-powered circuits where off-state current matters.