The MLD5117 from Massachusetts Bay Technologies is a Limiter Diode with Frequency Range 100 MHz to 20 GHz, CW Input Power 5 W, Input Peak Power 59 dBm, Insertion Loss 0.2 dB, Capacitance 0.5 to 0.7 pF. Tags: Chip. More details for MLD5117 can be seen below.