The Infineon BCR183SE6327BTSA1 is a dual PNP pre-biased transistor in a SOT-363 package, integrating two matched PNP transistors each with built-in 10kΩ base and base-emitter resistors. The 50V collector-emitter breakdown voltage and 100mA maximum collector current define the switching and load-driving envelope for low-side relay drivers, LED indicators, and logic-level interface circuits where you want to eliminate external bias resistors and shrink the PCB footprint. The 200MHz transition frequency keeps switching edges clean for sub-1MHz PWM or digital signalling.
The BCR183SE6327BTSA1 carries an obsolete product status. Infineon no longer manufactures this specific variant, so new-production orders are not available through the franchised channel.
Built-in bias resistors — one less component per channel
Each of the two PNP transistors integrates a 10kΩ resistor in series with the base and a 10kΩ resistor between base and emitter. This pre-biased configuration saves two external resistors per channel — four resistors total for the dual pair — and guarantees a known base drive condition without a separate bias network. For a high-density board running at 5V or 3.3V logic, that reduction in component count directly frees up placement space and simplifies the BOM.