The TH2002 Series from Sainty-Tech Communications Limited is a RF & Microwave Circulator with Frequency 18 to 24.5 GHz, Bandwidth 10%, Insertion Loss 0.6 dB, Isolation 18 dB, Operating Temperature -40 to 70 Degree C. Tags: Drop-in Circulator. More details for TH2002 Series can be seen below.