This part is a kind of semiconductor called CEP10N4.

Function of this product has N-Channel Enhancement Mode Field Effect Transistor.

Manufacturers : CET

Image and pinout :

Some of the text within the PDF file :

CEP10N4/CEB10N4 CEI10N4/CEF10N4 N-Channel Enhancement Mode Field Effect Transistor FEATURES Type CEP10N4 CEB10N4 CEI10N4 CEF10N4 VDSS 450V 450V 450V 450V RDS(ON) 0.7Ω 0.7Ω 0.7Ω 0.7Ω ID 10A 10A 10A 10A e @VGS 10V 10V 10V 10V D Super high dense cell design for extremely low RDS(ON). High power and current handing capability. Lead free product is acquired. TO-220 & TO-263 & TO-262 package & TO-220F full-pak for through hole. D G S CEB SERIES TO-263(DD-PAK) G G D S CEI SERIES TO-262(I2-PAK) G D S CEP SERIES TO-220 G D S CEF SERIES TO-220F S ABSOLUTE MAXIMUM RATINGS Parameter Drain-Source Voltage Gate-Source Voltage Drain Current-Continuous Drain Current-Pulsed a Tc = 25 C unless otherwise noted Limit Symbol TO-220/263/262 VDS VGS ID IDM PD EAS IAS TJ,Tstg f TO-220F Units V [ ... ]

CEP10N4 PDF Datasheet Download