The SDKB257262AA from Sangshin is a RF & Microwave Circulator with Frequency 2570 to 2620 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 SDKB257262AA can be seen below.