Patent ID: 8525037

Claim:
A suspension board with circuit comprising: a metal supporting layer, an insulating layer formed on the metal supporting layer, and a conductive layer formed on the insulating layer, wherein a gimbal portion is provided in the suspension board with circuit and an opening penetrating the metal supporting layer in the up-down direction is formed in the gimbal portion, and the gimbal portion includes a tongue portion formed at an inner side of the opening for being mounted with a slider mounted with a magnetic head for being electrically connected to the conductive layer, an outrigger portion formed at an outer side of the opening to support the tongue portion, and a passing portion passing through the opening of the gimbal portion and/or an outer side region of the outrigger portion, wherein the passing portion includes the conductive layer and the insulating layer covering the conductive layer, and the thickness of a lower half portion of the insulating layer in the passing portion is the same as that of an upper half portion thereof.