The SDFA120140AA from Sangshin is a RF & Microwave Circulator with Frequency 1200 to 1400 MHz, Average Power Forward 200 W, Insertion Loss 0.35 to 0.4 dB, Isolation 20 to 22 dB, Return Loss 20 to 22 dB. Tags: Drop-in Circulator. More details for SDFA120140AA can be seen below.