The SD10625 from Honeywell is a RF & Microwave Isolator with Frequency 3.6 to 4 GHz, Insertion Loss 0.3 to 0.4 dB, Isolation 20 to 23 dB, Return Loss 20 to 23 dB, Operating Temperature -10 to 65 Degree C. Tags: Coaxial Isolator. More details for SD10625 can be seen below.