The JCD0512T0698G15 from JQL Electronics is a RF & Microwave Circulator with Frequency 512 to 698 MHz, Average Power Forward 150 W, Insertion Loss 0.4 dB, Isolation 20 dB, Operating Temperature -30 to 60 Degree C. Tags: Drop-in Circulator. More details for JCD0512T0698G15 can be seen below.