This part is a kind of semiconductor called B80NF55L-08.

Function of this product has STB80NF55L-08.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

STP80NF55L-08 STB80NF55L-08 N-CHANNEL 55V - 0.0065Ω - 80A - TO-220/D2PAK STripFET™ II POWER MOSFET PRELIMINARY DATA TYPE VDSS RDS(on) STP80NF55L-08 STB80NF55L-08 55 V 55 V 0.008Ω 0.008Ω s TYPICAL RDS(on) = 0.0065Ω s LOW THRESHOLD DRIVE s LOGIC LEVEL DEVICE ID 80 A 80 A 3 2 1 3 1 TO-220 D2PAK DESCRIPTION This Power Mosfet is the latest development of STMicroelectronics unique “Single Feature Size™” strip-based process. The resulting tran- sistor shows extremely high packing density for low on-resistance, rugged avalance characteristics and less critical alignment steps therefore a remarkable manufacturing reproducibility. INTERNAL SCHEMATIC DIAGRAM APPLICATIONS s SOLENOID AND RELAY DRIVERS s MOTOR CONTROL, AUDIO AMPLIFIER [ ... ]

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