The TH401AS Series from Sainty-Tech Communications Limited is a RF & Microwave Circulator with Frequency 3.5 to 8 GHz, Bandwidth 10%, Insertion Loss 0.8 dB, Isolation 46 dB, Operating Temperature -40 to 70 Degree C. Tags: Coaxial Circulator. More details for TH401AS Series can be seen below.