The APCI001212503R9TY0 from Yageo is a Power Inductor with Inductance 3.9 µH, Inductance Tolerance ±30 %, DCR 15 mhom, Saturation Current 6.5 A, Temperature Operating Range -40 to 125 Degree C. Tags: Surface mount. More details for APCI001212503R9TY0 can be seen below.