This part is a kind of semiconductor called F04U150S.
Function of this product has FFPF04U150S.
Manufacturers : Fairchild Semiconductor
Image and pinout :

Some of the text within the PDF file :
FFPF04U150S FFPF04U150S Features • High voltage and high reliability • High speed switching • Low forward voltage Applications • Suitable for damper diode in horizontal deflection circuits 1 2 TO-220F 1. Cathode 2. Anode DAMPER DIODE Absolute Maximum Ratings Symbol VRRM IF(AV) IFSM TJ, TSTG TC=25°C unless otherwise noted Value 1500 @ TC = 125°C 4 40 - 65 to +150 Units V A A °C Parameter Peak Repetitive Reverse Voltage Average Rectified Forward Current Non-repetitive Peak Surge Current 60Hz Single Half-Sine Wave Operating Junction and Storage Temperature Thermal Characteristics Symbol RθJC Parameter Maximum Thermal Resistance, Junction to Case TC=25 °C unless otherwise noted Min. TC = 25 °C TC = 125 °C TC = 25 °C TC = 125 °C Typ. Max. 1.8 1.7 µA 7 60 150 400 19 ns n [ ... ]
F04U150S PDF Datasheet Download
