The T12R1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 12.7 to 13.2 GHz, Average Power 0.1 W, Average Power Forward 0.1 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Microstrip, Microstrip Isolator. More details for T12R1 can be seen below.