The Toshiba RN2711,LF integrates two PNP transistors with built-in bias resistors (R1 = 10 kΩ) in an emitter-coupled configuration. This saves board space and external resistor count in switching and driver circuits where you need a matched pair — think relay drivers, lamp drivers, or logic-level interface stages. With a 200 MHz transition frequency it handles moderate-speed switching without excessive storage time.
The 50 V VCEO rating gives headroom for 24 V and 36 V rails with derating margin. The 100 mA IC max suits driving small relays, LEDs, or logic inputs — not power loads. Saturation voltage is specified at 300 mV max with 250 µA base drive and 5 mA collector current, so the on-state drop stays low enough to keep dissipation under 200 mW total package limit. The 100 nA collector cutoff current matters in battery-powered circuits where off-state leakage must stay negligible.
Package and lifecycle status
Housed in a 5-pin SOT-353 (USV) package, it is a surface-mount footprint shared with many small-signal transistor arrays. The LF suffix indicates lead-free / RoHS-compliant termination finish.