The 1N5811 from Microchip Technology is diode with fast recovery =< 500ns, > 200mA (Io), 150 V DC reverse voltage (Max) and 3 A average rectified current. This B, axial package diode has 875 mV @ 4 A forward (Vf) (Max) @ If. Dimensions of this diode are: 3.61 mm diameter x 7.62 mm length.Operating temperature range is from -65°C to 175°C.