This part is a kind of semiconductor called FRF10A40.

Function of this product has FRED.

Manufacturers : Nihon Inter Electronics

Image and pinout :

Some of the text within the PDF file :

FRD Type : FRF10A40 FEATURES * Fully Molded Isolation * Dual Diodes – Anode Common * Ultra – Fast Recovery * Low Forward Voltage Drop * High Surge Capability * 200 Volts thru 600 Volts Types Available OUTLINE DRAWING Maximum Ratings Approx Net Weight:1.75g Rating Repetitive Peak Reverse Voltage Non-repetitive Peak Reverse Voltage Average Rectified Output Current RMS Forward Current Surge Forward Current Operating JunctionTemperature Range Storage Temperature Range Mounting torque Symbol VRRM VRSM IO IF(RMS) IFSM Tjw Tstg FRF10A40 400 440 10 Tc=112°C 50 Hz,Full Sine Resistive Load Wave 11.1 80 50 Hz Full Sine Wave,1cycle Non-repetitive - 40 to + 150 - 40 to + 150 0.5 Recommended value Unit V V A A A °C °C N•m Electrical • Thermal Characteristics Characteristi [ ... ]

FRF10A40 PDF Datasheet Download