Design and Fabrication of Ferrite Inductor Using 3D Printed Spiral Coil and Ferrite Disc

Abstract

In this paper, we present spiral inductor fabricated by 3D additive manufacturing (AM) with added ferrite disc in the middle of the inductor (center), first approach, and with added ferrite disc beneath the inductor, second approach. The inductor was made with conductive epoxy silver based paste which was injected in a spiral channel fabricated in polylactic acid (PLA) substrate (model) using AM technology. 3D model and obtained results present a connection between passive components production and additive manufacturing. The designed spiral inductor has four full turns, with inner diameter 10 mm and outer diameter 24 mm. The total dimension of the component is 27 mm x 27 mm. The prototype results show good characteristics and demonstrate an innovative approach to fabricate low-cost, passive devices such as an inductor.