The T3ZH14 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 3.3 to 4.3 GHz, Average Power 1 W, Average Power Forward 1 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for T3ZH14 can be seen below.