The YXSC102M1-4 from Talee Microwave Limited is a RF & Microwave Circulator with Frequency 500 to 1000 MHz, Average Power Forward 100 W, Average Power Reverse 100 W, Insertion Loss 0.5 dB, Isolation 23 dB. Tags: Surface Mount Circulator. More details for YXSC102M1-4 can be seen below.