The T3ZH5 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 3.6 to 3.9 GHz, Average Power 30 W, Average Power Forward 30 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for T3ZH5 can be seen below.