The ACLM4812F from Cobham Signal & Control Solutions is a Limiter with Frequency 20 MHz to 3 GHz, CW Flat Leakage 12.5 dBm, CW Flat Leakage 0.07 W, Flat Leakage 0.07 W, Flat Leakage 12.5 dBm. Tags: surface mount, PIN Diode. More details for ACLM4812F can be seen below.