This part is a kind of semiconductor called P80NF55.

Function of this product has STP80NF55.

Manufacturers : ST Microelectronics

Image and pinout :

Some of the text within the PDF file :

® STP80NF55L-06 N - CHANNEL 55V - 0.005 Ω - 80A TO-220 STripFET™ POWER MOSFET TYPE STP80NF55L-06 s s s V DSS 55 V R DS( on ) < 0.0065 Ω ID 80 A TYPICAL RDS(on) = 0.005 Ω LOW THRESHOLD DRIVE LOGIC LEVEL DEVICE DESCRIPTION This Power MOSFET is the latest development of STMicroelectronics unique ”Single Feature Size™” strip-based process. The resulting transistor shows extremely high packing density for low on-resistance, rugged avalanche characteristics and less critical alignment steps therefore a remarkable manufacturing reproducibility. APPLICATIONS s HIGH CURRENT, HIGH SPEED SWITCHING s SOLENOID AND RELAY DRIVERS s MOTOR CONTROL, AUDIO AMPLIFIERS s DC-DC & DC-AC CONVERTERS 3 1 2 TO-220 INTERNAL SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symb [ ... ]

P80NF55 PDF Datasheet Download