SWITCHMODE NPN Silicon Planar Power Transistor

The BUD43B 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:
• High and Flat DC Current Gain hFE
• Fast and Tightened Switching Distributions
• No Coil Required in Base Circuit for Fast Turn−off (no current tail)