This part is a kind of semiconductor called FFP06U40DN.

Function of this product has ULTRA FAST RECOVERY POWER RECTIFIER.

Manufacturers : Fairchild Semiconductor

Image and pinout :

Some of the text within the PDF file :

FFP06U40DN FFP06U40DN Features • Ultrafast with soft recovery • Low forward voltage Applications • • • • Power switching circuits Output rectifiers Freewheeling diodes Switching mode power supply TO-220 1 2 3 1. Anode 2.Cathode 3. Anode ULTRA FAST RECOVERY POWER RECTIFIER Absolute Maximum Ratings (per diode) TC=25°C unless otherwise noted Symbol VRRM IF(AV) IFSM TJ, TSTG Parameter Peak Repetitive Reverse Voltage Average Rectified Forward Current @ TC = 100°C Non-repetitive Peak Surge Current 60Hz Single Half-Sine Wave Operating Junction and Storage Temperature Value 400 6 60 - 65 to +150 Units V A A °C Thermal Characteristics Symbol RθJC Parameter Maximum Thermal Resistance, Junction to Case Value 7.0 Units °C/W Electrical Characteristics (per diode) TC=25 °C unless [ ... ]

FFP06U40DN PDF Datasheet Download