Dual pre-biased pair in SOT-363 — what it saves on the board
The Infineon BCR08PNB6327XT packs one NPN and one PNP pre-biased transistor into a single SOT-363 package, each with integrated bias resistors — R1 of 2.2 kΩ and R2 of 47 kΩ — so you eliminate two resistor pairs from the BOM and shrink the footprint to a 6-pin VSSOP/SC-88/SOT-363 case.
50 V Vce and 100 mA Ic — where the ratings land
Collector-emitter breakdown sits at 50 V, and the maximum continuous collector current is 100 mA per transistor, with a total package dissipation ceiling of 250 mW. For a 5 V or 12 V logic-level load, the voltage headroom is generous; the current limit means this part is sized for signal-level switching — relay coils, LED drivers, small solenoid pre-drives — not power stages. The 170 MHz transition frequency keeps switching edges clean for PWM up to several megahertz.
Saturation and gain at your operating point
Vce(sat) is specified at 300 mV maximum with a base drive of 500 µA into a 10 mA collector load — a low-saturation characteristic that minimises on-state losses in the NPN side. The minimum DC current gain (hFE) is 70 at 5 mA, 5 V, which is typical for pre-biased parts and gives you predictable base-drive margin when the integrated resistors set the bias.