The ICSI182157F7SHMST12 from knitter-switch is a Power Inductor with Inductance 1.8 µH, Inductance Tolerance ±20 %, DCR 4.0 milli-ohm, Saturation Current 18.0 A, Temperature Operating Range -40 to 150 Degree C. Tags: Surface Mount. More details for ICSI182157F7SHMST12 can be seen below.