Abstract:
A pressfit terminal is to be inserted into a through hole defined in a substrate for electrically contacting with the through hole. The pressfit terminal includes a terminal main body and at least three protrusion portions. The at least three protrusion portions protrude outwardly from a surface of the terminal main body. At least part of the protrusion portions are arranged at intervals in a direction intersecting with an insertion direction of the terminal main body.
Abstract:
A substrate for mounting a semiconductor chip is formed as a multilayer substrate by alternately laminating insulation layers and wiring layers. Wires of the wiring layers are electrically connected through a via-hole for interlayer continuity. A through-hole provided through the insulation layer of the outermost surface layer is formed. A bump is inserted in the through-hole to a bump allocating position of the semiconductor chip to be mounted in the insulation layer of the outermost surface layer. A portion of the wire in the wiring layer of the outermost surface layer is projected to the internal side of through-hole at the aperture of the through-hole.
Abstract:
What is provided is a multi-layer PCB having a plurality of stacked dielectric layers, a conductor disposed on at least one of the plurality of dielectric layers, and a non-conductive via extending through at least a portion of the plurality of dielectric layers to intersect the conductor. A conductive body in an activated state is introduced into the non-conductive via, and upon contacting the conductor, the activated state conductive body adheres to the conductor. The activated state conductive body is then effected to a deactivated state, wherein the conductive body is affixed to the conductor to provide an electrical connection thereto.
Abstract:
A method of manufacturing a printed wiring board, enabling insertion components to be mounted on both sides thereof, including: a) providing first and second copper-clad laminates, including plated through-holes thereon; b) hot-pressing the laminates with each other and a first prepreg bonding sheet therebetween, so that the through-holes are closed by the prepreg to form non-through holes; c) laminating a second prepreg on each of the surfaces of the composite laminate; d) covering the opening of respective non-through holes with a heat resistant resin film; e) laminating one-side copper-clad laminate on each of the surfaces of the product of (d), with the copper side out, followed by hot-pressing; f) etching the copper sides to form outer layer circuit patterns; g) removing the base material layers covering the openings of the non-through holes; and h) removing the heat resistant resin films of the openings of the non-through holes.
Abstract:
A filter insert for a terminal connector includes a rigid substrate and low-cost interference fit connections between the filter insert circuitry and the connector terminals. In a first embodiment, the insert includes a flexible circuit bonded to the rigid substrate, and the substrate is provided with over-sized openings that the terminals pass through without interference. A second embodiment is like the first, except that the filter circuit traces are formed directly on the rigid substrate, and the substrate material backing the terminal connection sites is removed to form the over-sized openings.
Abstract:
A sheet capacitor of the invention has a contact portion formed in a through-hole requiring electrical connection with IC connection pin among the through-holes in which the IC connection pins are inserted, and a capacitor element connected to the contact portion. Another sheet capacitor of the invention includes an insulating board and a capacitor element mounted on the insulating board. The insulating board has a connection land with an IC at the upper side, and a connection land with a printed wiring board at the lower side. The capacitor element and connection lands at the upper and lower side of the insulating board are connected with each other electrically. In any one of these configurations, the capacitor element of large capacity and low ESL is connected closely to the IC, and the mounting area of the peripheral circuits of the IC can be increased.
Abstract:
A printed circuit board (PCB) comprises a number of electrically conductive layers. Instead of coating, or plating, a PCB through-hole with an electrically conductive material to form a via (for the purpose of connecting together signal paths across the electrically conductive layers)—the via is formed by placing a conductive stake, or conductive pin, in the through-hole.
Abstract:
An integrated circuit including a die, a first conductor electrically coupled to the die, a second conductor and a conductive liquid that electrically couples the first conductor (e.g., a pin) to the second conductor (e.g., a socket) to lower the resistance between the first conductor and the second conductor.
Abstract:
Device and method including a generally flat and flexible circuit for electrically inter-connecting components therein are provided. The device includes a post including a recessed section configured to receive the flexible circuit through an opening in said circuit. The structures defining the opening in the flexible circuit may be configured to provide a snap-fit between the circuit and the recessed section of the post, and thus avoid undesirable movement of the flex circuit in the presence of vibration.
Abstract:
A printed circuit board (23) used in a modular jack (1) includes a plurality of insertion holes (231, 232) defined through an upper side and a lower side thereof. A conductive layer coating (235) coats an inside of each insertion hole and a conductive base ring (236) forms a rim around each end of each hole. A solder mask (230) covers portions of a front and a rear surfaces of the printed circuit board around the insertion holes. The solder mask covers over the base rings and extends a short distance into each insertion hole, thereby increasing a creepage distance between conductive layer coatings of adjacent holes. This protects the printed circuit board from short circuiting.