This part is a kind of semiconductor called 5N50C.
Function of this product has FQD5N50C.
Manufacturers : Fairchild Semiconductor
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FQD5N50C / FQU5N50C October 2008 QFET ® FQD5N50C / FQU5N50C 500V N-Channel MOSFET General Description These N-Channel enhancement mode power field effect transistors are produced using Fairchild’s proprietary, planar stripe, DMOS technology. This advanced technology has been especially tailored to minimize on-state resistance, provide superior switching performance, and withstand high energy pulse in the avalanche and commutation mode. These devices are well suited for high efficiency switched mode power supplies, active power factor correction, electronic lamp ballasts based on half bridge topology. Features • • • • • • • 4.0A, 500V, RDS(on) = 1.4 Ω @VGS = 10 V Low gate charge ( typical 18nC) Low Crss ( typical 15pF) Fast switching 100% avalanche tested Improved dv [ ... ]