The MSM1315 from Massachusetts Bay Technologies is a RF Schottky Diode with Peak Reverse Voltage 6 V (Breakdown Voltage), Forward continuous Current 1 to 5 mA, Forward Voltage 0.450 V, Power Dissipation 250 mW, Capacitance 0.12 pF. Tags: Chip. More details for MSM1315 can be seen below.