Planar Monolithics (PMI) Model LM-0R1G4G-100W-15DBM-SMF is a high-power limiter that operates over the 0.1 to 4 GHz frequency range and can handle an input power of 100 W CW. Package size is 0.625" x 0.8" x 0.4" with SMA male / female connectors. https://www.pmi-rf.com/product-details/lm-0r1g4g-100w-15dbm-smf
