The BAS70-04(ES) from Infineon Technologies is a Power Diode with Dynamic Resistance 16 to 24 ohm, Forward Current 0.07 A, Forward Voltage 0.30 to 1 V, Reverse Current 0.1 to 2 uA, Reverse Voltage 70 V. Tags: Stud Mount. More details for BAS70-04(ES) can be seen below.