This part is a kind of semiconductor called F12N10L.

Function of this product has N-Channel Logic Level Power MOSFET.

Manufacturers : Fairchild Semiconductor

Image and pinout :

Some of the text within the PDF file :

Data Sheet RFP12N10L October 2013 N-Channel Logic Level Power MOSFET 100 V, 12 A, 200 mΩ These are N-Channel enhancement mode silicon gate power field effect transistors specifically designed for use with logic level (5V) driving sources in applications such as programmable controllers, automotive switching and solenoid drivers. This performance is accomplished through a special gate oxide design which provides full rated conduction at gate biases in the 3V to 5V range, thereby facilitating true on-off power control directly from logic circuit supply voltages. Formerly developmental type TA09526. Ordering Information PART NUMBER PACKAGE RFP12N10L TO-220AB BRAND F12N10L Features • 12A, 100V • rDS(ON) = 0.200Ω • Design Optimized for 5V Gate Drives • Can be Driven Direct [ ... ]

F12N10L PDF Datasheet Download