Darlington npn transistors fairchild semiconductor bdx33c darlington transistor npn polarity 100v collector emitter voltage vceo 100v collector base voltage vcbo 25v emitter base voltage veb 10a collector current 70w power 750 dc current gain hfe 5ma collector cut off current 25v collector emitter saturation voltage to 220 case each 1 complementary silicon epitaxial base monolithic configuration typical applications includes linear and switching industrial equipment