The MA4L031-1056 from MACOM is a Limiter Diode with Frequency Range 10 MHz to 18 GHz, CW Input Power 4 W, Input Peak Power 50.96 dBm, Capacitance 0.41 pF, Series Resistance 2 Ohms. Tags: Surface Mount. More details for MA4L031-1056 can be seen below.