This part is a kind of semiconductor called 13N50C.

Function of this product has FQB13N50C.

Manufacturers : Fairchild Semiconductor

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Some of the text within the PDF file :

FQB13N50C/FQI13N50C QFET FQB13N50C/FQI13N50C 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. TM Features • • • • • • 13A, 500V, RDS(on) = 0.48Ω @VGS = 10 V Low gate charge ( typical 43nC) Low Crss ( typical 20pF) Fast switching 100% avalanche tested Improved d [ ... ]

13N50C PDF Datasheet Download