The SDHA152155AB from Sangshin is a RF & Microwave Circulator with Frequency 1525 to 1559 MHz, Average Power Forward 200 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 SDHA152155AB can be seen below.