Device identity and key ratings
The SST3906T116 from ROHM Semiconductor is a general-purpose PNP transistor rated for 40 V collector-emitter breakdown and 200 mA continuous collector current. Maximum power dissipation is 350 mW, and the device is specified for operation up to 150°C junction temperature. The transition frequency of 250 MHz makes it suitable for switching and amplification up to the VHF range.
DC current gain and saturation voltage
Vce saturation is 400 mV max at Ib=5 mA and Ic=50 mA, which keeps conduction losses low in switching applications. Collector cutoff current is a low 50 nA max, minimizing leakage in off-state conditions.