PMI Model No. LM-100M20G-18-10W-SFF is a 10 W peak, 1 W CW Limiter that operates over the 0.1 to 20.0 GHz frequency range.  This model offers a maximum insertion loss of 2.0 dB and a maximum VSWR of 2.0:1. 

The unit is supplied with SMA female connectors in an ultra small housing measuring only 0.50" x 0.50" x 0.22". 

It is ideal for protecting low noise amplifiers from high power (1 W CW) in an RF/Microwave receiver application.