The KSC945 is a NPN Epitaxial Silicon Transistor produced by Fairchild Semiconductor Corporation. Its maximum collector-base reverse voltage is 60V, collector-emitter maximum voltage is 50V, emitter-base maximum voltage is 5V, maximum collector current is 150mA, maximum collector power dissipation is 250mW, maximum junction temperature is 150℃, and storage temperature range is -55~150℃.