The SDKB230240AA from Sangshin is a RF & Microwave Circulator with Frequency 2200 to 2400 MHz, Average Power Forward 125 W, Insertion Loss 0.2 to 0.25 dB, Isolation 22 to 26 dB, Return Loss 22 to 26 dB. Tags: Surface Mount Circulator. More details for SDKB230240AA can be seen below.