The BAS40-05(ES) from Infineon Technologies is a Power Diode with Dynamic Resistance 8 to 12 ohm, Forward Current 0.12 A, Forward Voltage 0.29 to 0.75 V, Reverse Current 0.1 to 2 uA, Reverse Voltage 40 V. Tags: Stud Mount. More details for BAS40-05(ES) can be seen below.