The P2T-8G18G-50-R-SFFF from PMI RF is a reflective SPDT pin diode switch that operates from 8 to 18 GHz. The switch has an insertion loss of less than 3 dB with an isolation of over 50 dB and a switching speed of 200 ns. It can handle an input power of up to 40 watts and is available in a module that measures 1.55 x 2.30 x 0.5 inches with SMA female connectors.
