This part is a kind of semiconductor called 10N60A.
Function of this product has SSP10N60A.
Manufacturers : Fairchild Semiconductor
Image and pinout :
Some of the text within the PDF file :
Advanced Power MOSFET FEATURES Avalanche Rugged Technology Rugged Gate Oxide Technology Lower Input Capacitance Improved Gate Charge Extended Safe Operating Area Lower Leakage Current : 25 µA (Max.) @ VDS = 600V Low RDS(ON) : 0.646 Ω (Typ.) SSP10N60A BVDSS = 600 V RDS(on) = 0.8 Ω ID = 9 A TO-220 1 2 3 1.Gate 2. Drain 3. Source Absolute Maximum Ratings Symbol VDSS ID IDM VGS EAS IAR EAR dv/dt PD TJ , TSTG TL Characteristic Drain-to-Source Voltage Continuous Drain Current (TC=25 C) Continuous Drain Current (TC=100 oC) Drain Current-Pulsed Gate-to-Source Voltage Single Pulsed Avalanche Energy Avalanche Current Repetitive Avalanche Energy Peak Diode Recovery dv/dt Total Power Dissipation (TC=25oC) Linear Derating Factor Operating Junction and Storage Temperature R [ ... ]