PMI Model No. LM-10M2D5G-100CW-1KWP-SFF is a RF limiter that operates in the 10 MHz to 2.5 GHz frequency range.  This limiter can handle 100 W CW and 1 KW peak (1% duty cycle, 1 µs maximum pulse width) input power and provides a maximum leakage of +13 dBm CW input.  This module has a low insertion loss of 0.5 dB and a recovery time of 2 µs typical. 

Package size is  1.86” x 0.65” x 0.38” with SMA Female connectors

http://www.pmi-rf.com/Products/limiters/LM-10M2D5G-100CW-1KWP-SFF.htm