This part is a kind of semiconductor called FSU10B60.

Function of this product has FRED.

Manufacturers : ETC

Image and pinout :

Some of the text within the PDF file :

10A Avg. 600 Volts FRED FSU10B60 INSTANTANEOUS FORWARD CURRENT (A) 50 20 10 5 2 1 0 FORWARD CURRENT VS. VOLTAGE 1 23 INSTANTANEOUS FORWARD VOLTAGE (V) FSU10B60 Tj=25˚C Tj=150˚C 4 AVERAGE FORWARD POWER DISSIPATION (W) 0˚ 180˚ θ CONDUCTION ANGLE 35 30 25 20 15 10 5 0 0 AVERAGE FORWARD CURRENT (A) AVERAGE FORWARD POWER DISSIPATION RECT 60˚ RECT 180˚ HALF SINE WAVE RECT 120˚ FSU10B60 D.C. 0˚ 180˚ θ CONDUCTION ANGLE 16 D.C. AVERAGE FORWARD CURRENT VS. CASE TEMPERATURE FSU10B60 12 RECT 180˚ HALF SINE WAVE RECT 120˚ 8 RECT 60˚ 4 4 8 12 AVERAGE FORWARD CURRENT (A) 0 16 0 25 50 75 100 125 150 CASE TEMPERATURE ( ˚C) 120 100 80 60 40 20 0 0.02 SURGE CURRENT RATINGS f=50Hz,Sine Wave,Non-Repetitive,No Load 0.02s 0.05 I FSM 0.1 0.2 TIME (s) 0.5 FSU10B60 12 RMS SURG [ ... ]

FSU10B60 PDF Datasheet Download