This part is a kind of semiconductor called TSU05A60.

Function of this product has FRD.

Manufacturers : Nihon Inter Electronics

Image and pinout :

Some of the text within the PDF file :

www.net FRD FEATURES Type : TSU05A60 OUTLINE DRAWING For Power Factor Improvement High Frequency Rectification * Ultra – Fast Recovery * Low Forward Voltage Drop * Low Power Loss, High Efficiency * High Surge Capability Maximum Ratings Rating Repetitive Peak Reverse Voltage Average Rectified Output Current RMS Forward Current Surge Forward Current Operating JunctionTemperature Range Storage Temperature Range Mounting torque Symbol VRRM IO IF(RMS) IFSM Tjw Tstg 0.5 70 5 Approx Net Weight:1.45g TSU05A60 600 50 Hz Half Sine Wave Tc=95°C Resistive Load 15.7 50 Hz Half Sine Wave,1cycle Non-repetitive - 40 to + 150 - 40 to + 150 Recommended value Unit V A A A °C °C N•m Electrical • Thermal Characteristics Characteristics Peak Reverse Current Peak Forward Voltage Re [ ... ]

TSU05A60 PDF Datasheet Download