The T4YE1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 4.3 to 5.1 GHz, Average Power 35 W, Average Power Forward 35 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for T4YE1 can be seen below.