The ESI 7 K42 1S from Exxelia Technologies is a Space Qualified Inductor with Inductance 0.42 µH (No Load), Inductance Tolerance ± 20%, DCR 7.5 mOhms, Saturation Current 2.9 A(Rated), Temperature Operating Range -55 to 125 Degree C. Tags: Surface Mount. More details for ESI 7 K42 1S can be seen below.