The CCS15S40 from Toshiba is a Power Diode with Forward Voltage 0.55 V, Reverse Current 200 uA, Repetitive Peak Reverse Voltage 40 V, Non-Repetitive Peak Forward Current 1.5 A, Temperature operating range -55 to 125 Degree C. Tags: Surface Mount. More details for CCS15S40 can be seen below.