The JCD0380T0450G15 from JQL Electronics is a RF & Microwave Circulator with Frequency 380 to 450 MHz, Average Power Forward 150 W, Insertion Loss 0.5 dB, Isolation 18 dB, Operating Temperature 10 to 60 Degree C. Tags: Drop-in Circulator. More details for JCD0380T0450G15 can be seen below.