The TH102K4 Series from Sainty-Tech Communications Limited is a RF & Microwave Circulator with Frequency 1.5 to 2.2 GHz, Bandwidth 1%, Insertion Loss 0.4 dB, Isolation 20 dB, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount Circulator. More details for TH102K4 Series can be seen below.