The MSS39,148-H20 from Cobham Metelics is a RF Schottky Diode with Forward continuous Current 50 mA, Forward Voltage 0.38 to 0.48 V, Current 50 mA, Power Dissipation 150 mW, Capacitance 0.28 to 0.33 pF. Tags: Surface Mount, P Type. More details for MSS39,148-H20 can be seen below.