The STBR3012-Y from STMicroelectronics is a Power Diode with Forward Current 30 A, Forward Voltage 0.95 to 1.3 V, Reverse Current 2 to 100 uA, Repetitive Peak Reverse Voltage 1200 V, Non-Repetitive Peak Forward Current 300 A. Tags: Through Hole. More details for STBR3012-Y can be seen below.