ASPI Mini Shielded SMT Power Inductors ABRACON ASPI Mini Shielded SMT Power Inductors offer magnetic shielding with a small footprint, a flat top for pick and place equipment, and a wide size selection. With a 20% tolerance standard, the ASPI Series are ideal for portable and laptop DC to DC converters, PDA flash memory, and step-up, step-down converters. The ABRACON ASPI Mini Shielded SMT Power Inductors are available in various case sizes.