The TT221-8I-10 from PICONICS is a Space Qualified Inductor with Inductance 0.16 to 0.22 µH, DCR 0.6 Ohms, Saturation Current 180 mA, SRF 400 MHz, Temperature Operating Range -55 to 125 Degree C. Tags: Through Hole, Screw Mount. More details for TT221-8I-10 can be seen below.