NRND — plan your last-time buy window
This means the part remains available for existing production but is no longer being designed into new BOMs. Buyers should confirm the last-time buy schedule and evaluate whether to secure lifetime volume or qualify a replacement before the end-of-life notice arrives.
What the specs mean for a switching design
This is a PNP pre-biased transistor — the 22 kΩ base resistor (R1) and 47 kΩ emitter-base resistor (R2) are integrated into the die, saving two external passives per channel. The 200 MHz transition frequency (fT) gives it enough speed for low-frequency switching up to a few megahertz, such as relay drivers, LED indicators, or logic-level inverters. Collector current is rated to 100 mA continuous, with a VCE saturation of 300 mV at 10 mA collector current and 500 µA base drive — a reasonable on-state voltage for a 5 V or 3.3 V logic rail. The 50 V VCEO breakdown provides headroom for 12 V and 24 V industrial supply rails.
Package and footprint
Housed in a SC-70 (SOT-323) surface-mount package, designated PG-SOT323 by Infineon. The three-lead footprint is compact — roughly 2.0 mm × 2.1 mm — suitable for dense PCB layouts in portable or space-constrained designs. The 250 mW power dissipation limit governs the maximum continuous current at elevated ambient temperatures; derating is needed above 25 °C.