The BYW29-150 is a 2 pin Rectifier Diode at 150V 8A in a TO-220AC package.
Specifications:
Package / Case: TO-220AC
Vr - Reverse Voltage: 150 V
If - Forward Current: 8 A
Vf - Forward Voltage: 1.3 V
Max Surge Current: 100 A
Ir - Reverse Current: 10 uA