The QSC15 from Qualwave is a RF & Microwave Circulator with Frequency 800 to 3650 MHz, Bandwidth 500 MHz, Average Power Forward 30 to 100 W, Insertion Loss 0.3 to 0.60 dB, Isolation 18 to 23 dB. Tags: Surface Mount, Surface Mount Circulator. More details for QSC15 can be seen below.