The RFLC402LM4V from RF-Lambda is a Space Qualified Circulator with Frequency 4.4 to 5.85 GHz, Bandwidth 1450 MHz, Average Power 40 W, Average Power Forward 40 W(Power Handling CW), Insertion Loss 0.2 to 0.4 dB. Tags: Module with Connector, Coaxial Circulator. More details for RFLC402LM4V can be seen below.