Dual pre-biased transistor in a single SOT-363
The Infineon BCR10PNH6730 packs one NPN and one PNP pre-biased transistor into a 6-pin SOT-363 package (PG-SOT363-6-1). Each transistor has a 10kΩ resistor in series with the base and a 10kΩ resistor from base to emitter, so the bias network is already on-die. That eliminates two external resistors per transistor — four components saved in a single 2.9 mm² footprint. Collector-emitter breakdown is rated at 50V, continuous collector current at 100mA, and the transition frequency hits 130MHz, which covers general-purpose switching and driver stages up to low-MHz rates.
The 10kΩ base resistor (R1) and 10kΩ emitter-base resistor (R2) are matched on the same die, so the turn-on threshold and saturation behaviour are consistent across temperature without trimming. For a 5V logic drive, the base current is roughly (5V − 0.7V) / 10kΩ ≈ 430 µA, which with a minimum DC current gain of 30 at 5mA, 5V gives enough headroom to saturate the output at 10mA with a Vce(sat) of 300mV max. The built-in resistors also mean the part is self-biased off when the drive is open — the 100nA collector cutoff confirms leakage is negligible.
That means no last-time-buy window to chase, no end-of-life paperwork to file.