The TB8B1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 800 MHz to 1 GHz, Average Power 10 to 200 W, Average Power Forward 10 to 200 W, Insertion Loss 0.5 dB, Isolation 15 dB. Tags: Drop-In, Drop-In Isolator. More details for TB8B1 can be seen below.