The RBS1LAM40A from ROHM Semiconductor is a Power Diode with Forward Current 1 A, Forward Voltage 0.34 to 0.38 V, Reverse Current 150 to 400 uA, Reverse Voltage 20 V, Repetitive Peak Reverse Voltage 40 V. Tags: Surface Mount. More details for RBS1LAM40A can be seen below.