PNP 50 V, 1.7 A — UFM flat-lead package
The 2SA2195,LF is a PNP bipolar transistor from Toshiba Semiconductor, rated for a collector-emitter breakdown voltage of 50 V and a continuous collector current of 1.7 A. It dissipates up to 500 mW, which is the thermal budget for this UFM package — a 3-lead SMD with flat leads that sit flush on the PCB, keeping the profile low. The DC current gain is a minimum of 200 at 300 mA collector current and 2 V Vce, so the part stays in its linear region well into the ampere range. Vce saturation is 200 mV maximum at 33 mA base current and 1 A collector current — the on-state voltage drop is low enough that conduction losses stay under 340 mW at full rated current.
The junction temperature rating is 150°C, which covers most ambient operating conditions up to 85°C with derating. The collector cutoff current is 100 nA maximum, so leakage is negligible in switched or low-power idle circuits.
The flat-lead profile means the component sits close to the board — useful for slim-profile assemblies or where the backside of the PCB has components that limit clearance. It is available in Tape & Reel (TR) for automated pick-and-place or Cut Tape (CT) for prototyping and low-volume builds. The mounting type is surface mount, so no manual through-hole soldering step is needed in production.