This post explains for the semiconductor 7N65C.
The Part Number is FQP7N65C.
The function of this semiconductor is 650V, N-Channel MOSFET.
The packages are TO-220, TO-220F type
Manufacturers : Fairchild Semiconductor
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.
1. 7A, 650V, RDS(on) = 1.4Ω @VGS = 10 V
2. Low gate charge ( typical 28 nC)
3. Low Crss ( typical 12 pF)
4. Fast switching
5. 100% avalanche tested
6. Improved dv/dt capability