The C2BU1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 2.07 to 2.21 GHz, Average Power 100 W, Average Power Forward 100 W, Peak Power 500 W, Insertion Loss 0.3 dB. Tags: Drop-In, Drop-In Isolator. More details for C2BU1 can be seen below.