Pre-biased NPN in a small SC-70 package
It integrates a 10 kΩ base resistor (R1) and a 47 kΩ emitter-base resistor (R2), so the switching threshold is set without external bias components — a BOM simplification for digital interface and load-switch roles where the base drive comes directly from a logic output or open-collector driver.
Infineon no longer manufactures this exact variant, so the primary channel for procurement is independent distribution — parts are sourced from surplus inventory, overstock, or verified broker networks.
250 mW power ceiling in a small footprint
Maximum power dissipation is 250 mW — a typical limit for the SC-70 package without a heatsink. In continuous operation, the collector current and VCE(sat) product must stay within this budget; at 100 mA and 300 mV saturation the dissipation is 30 mW, leaving ample margin, but a load that holds the transistor in the linear region at higher VCE will quickly reach the ceiling.