BD643 Description
SEMICONDUCTORS BD643 645 647 649 651 SILICON DARLINGTON POWER TRANSISTORS NPN epitaxial-base transistors in a monolithic Dalrington circuit and housed in a TO-220 enveloppe. They are intended for output stages in audio equipment, general amplifiers, and analogue switching application. PNP plements are BD644, BD646, BD648, BD650 and BD652 pliance to RoHS.