BUL43B Description
MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by BUL43B/D BUL43B Product Preview SWITCHMODE NPN Silicon Planar Power Transistor The BUL43B has an application specific state of the art die designed for use in 220 V line operated Switchmode Power supplies and electronic ballast (“light ballast”). The main advantages brought by this new transistor are: Improved Efficiency Due to Low Base Drive Requirements:.