The SDHA360380AB from Sangshin is a RF & Microwave Circulator with Frequency 3600 to 3800 MHz, Average Power Forward 175 W, Insertion Loss 0.18 to 0.22 dB, Isolation 22 to 26 dB, Return Loss 22 to 26 dB. Tags: Drop-in Circulator. More details for SDHA360380AB can be seen below.