Darlington npn transistors fairchild semiconductor ztx614 darlington transistor npn polarity 100v collector emitter voltage vceo 120v collector base voltage vcbo 10v emitter base voltage veb 800ma collector current 1w power 10000 dc current gain hfe 100na collector cut off current 125v collector emitter saturation voltage to 92 case 159mg weight tape amp reel 4000 silicon planar construction medium power fairchild semiconductor ztx614 darlington npn 120v 08a to92