摘要:
In order to provide a partially multilayered wiring board without exposing circuits of a mother board printed board even if not separately performing protection process, such as gold plating, a partially multilayered wiring board 1 has a first insulating base material 11 having one main surface formed thereon with first conductive circuit patterns 21 and a second insulating base material 12 laminated on the one main surface of the first insulating base material 11 and having one main surface formed thereon with second conductive circuit patterns 22 smaller than a region where the first conductive circuit patterns 21 are formed, wherein the first conductive circuit patterns 21 are covered by other main surface of the second insulating base material 22.
摘要:
An IC socket includes a plurality of contacts each including a spring formed by winding a conductive material around a winding axis with an effective winding number of at least 1 round, and arms provided on both ends of the spring, and a housing including the same number of holes as the plurality of contacts, the holes each having one of the contacts inserted therein in a state in which the spring is compressed in a direction of the winding axis so as to allow adjacent coil portions in the spring to come into contact with each other and to be electrically conductive.
摘要:
This double-sided connector is provided with: an insulating member having an insulating substrate and an elastomer insert-molded on both faces of the insulating substrate, and a through-hole formed along a thickness direction of the insulating substrate and the elastomer; a conductive member formed on an inner face of the through-hole, both ends of the conductive member exposed at the both faces; and a contact terminal part provided at one end of the conductive member. A protrusion is formed on at least a first face of the two faces of the insulating member and near one of the two ends of the through-hole, the protrusion formed by a part of the elastomer protruding from the first face. The contact terminal part includes a ring part formed around the end of the through-hole on the first face, a sloping part connected to the ring part and extended slantingly toward a top of the protrusion, and an approximately hemispherical point of contact part connected to the sloping part and covering the top.
摘要:
An aspect of the present invention inheres in an IC socket includes a plate-like socket base body which includes through hole forming portions having a plurality of contact housing holes formed so as to penetrate the plate-like socket base in a front-to-back direction, and having through holes formed around the respective contact housing holes so as to penetrate the plate-like socket base in the front-to-back direction, and a plated layer formed continuously on an inner wall of the through hole, on the front and back surfaces of the through hole forming portion, and on a surface of the contact piece.