The MA4L301-1056 from MACOM is a Limiter Diode with Frequency Range 10 MHz to 18 GHz, CW Input Power 7 W, Input Peak Power 56.98 dBm, Capacitance 0.4 pF, Series Resistance 1.5 Ohms. Tags: Surface Mount. More details for MA4L301-1056 can be seen below.