The BAS40 from Micro Commercial Components is a RF Schottky Diode with Peak Reverse Voltage 40 V, Forward continuous Current 40 mA, Forward Voltage 0.41 to 1 V, Current Surge Peak 0.1 to 0.6 A, Power Dissipation 200 mW. Tags: Surface Mount. More details for BAS40 can be seen below.