This part is a kind of semiconductor called PFF13N50.
Function of this product has 500V N-Channel MOSFET.
Manufacturers : Power Device
Image and pinout :

Some of the text within the PDF file :
Feb 2009 PFP13N50/PFF13N50 FEATURES Originative New Design 100% EAS Test Rugged Gate Oxide Technology Extremely Low Intrinsic Capacitances Remarkable Switching Characteristics Unequalled Gate Charge : 28 nC (Typ.) Extended Safe Operating Area Lower RDS(ON) : 0.46 Ω (Typ.) @VGS=10V APPLICATION Electronic lamp ballasts based on half bridge topology PFC (Power Factor Correction) SMPS (Switched Mode Power Supplies) PFP13N50/PFF13N50 500V N-Channel MOSFET BVDSS = 500 V RDS(on)typ = 0.46 Ω ID = 12.5 A Drain { Gate { ● ◀▲ ● ● Source { TO-220 TO-220F 1 2 3 1.Gate 2. Drain 3. Source 12 3 1.Gate 2. Drain 3. Source Absolute Maximum Ratings TC=25℃ unless otherwise specified Symbol Parameter PFP13N50 PFF13N50 VDSS ID IDM VGS EAS IAR EAR dv [ ... ]
PFF13N50 PDF Datasheet Download
