SUSPENSION SUBSTRATE, SUSPENSION, SUSPENSION WITH ELEMENT, HARD DISK DRIVE AND METHOD FOR MANUFACTURING SUSPENSION SUBSTRATE

摘要

PROBLEM TO BE SOLVED: To provide a suspension substrate on which an end part of a second wiring layer directly laminated on a first wiring layer is stably protected by a cover layer.SOLUTION: In the suspension substrate comprising: a metallic support substrate; a first insulating layer formed on the metallic support substrate; a first wiring layer formed on the first insulating layer; a second insulating layer formed on the first wiring layer; a second wiring layer formed on the second insulating layer; and a cover layer formed on the second wiring layer, the first insulating layer, the first wiring layer and the second wiring layer are laminated in this order and a stepped portion covered with the cover layer is formed. The stepped portion has a stable protection stepped portion in which the total thickness of the first wiring layer and the second wiring layer is 16.4 μm or less.