This part is a kind of semiconductor called F20UP20DN.

Function of this product has FFPF20UP20DN.

Manufacturers : Fairchild Semiconductor

Image and pinout :

Some of the text within the PDF file :

FFPF20UP20DN Ultrafast Recovery Power Rectifier FFPF20UP20DN Ultrafast Recovery Power Rectifier Features • Ultrafast with Soft Recovery : < 45ns • High Reverse Voltage : VRRM = 200V • Avalanche Energy Rated • Planar Construction Applications • Output Rectifiers • Switching Mode Power Supply • Free-wheeling diode for motor application • Power switching circuits 1 1 2 3 TO-220F 1. Anode 2. Cathode 3. Anode 1.Anode 2.Cathode 3.Anode Absolute Maximum Ratings Symbol VRRM VRWM VR IF(AV) IFSM TJ, TSTG (per diode) Ta = 25°C unless otherwise noted Parameter Peak Repetitive Reverse Voltage Working Peak Reverse Voltage DC Blocking Voltage Average Rectified Forward Current Non-repetitive Peak Surge Current 60Hz Single Half-Sine Wave Operating Junction and Storage Temperatur [ ... ]

F20UP20DN PDF Datasheet Download