Abstract:
An electronic appliance, such as a computer and the like, comprising a printed circuit board with printed circuits arranged thereon and electromagnetic components electrically connected thereto, as well as a heat dissipating arrangement for dissipating heat generated by the components to the surrounding atmosphere, a special feature being the fact that the heat dissipating arrangement comprises a heat sink with several separate thermal conductors which are thermically connected to the printed circuits, which thermal conductors can be arranged on the printed circuit board in various positions, each position corresponding to a predetermined heat dissipation direction.
Abstract:
An improved multi-chip module includes a main circuit board having and array of electrical interconnection pads to which are mounted a plurality of IC package units. Each IC package unit includes a pair of IC packages, both of which are mounted on opposite sides of the package carrier. The package units may be mounted on one or both sides of the main circuit board. A first primary embodiment of the invention employs a laminar package carrier having a pair of major planar surfaces. Each surface incorporates electrical contact pads. One IC package is surface mounted on each major planar surface, by interconnecting the leads of the package with the contact pads on the planar surface, to form the IC package unit. A number of other vriations exist that provide various other embodiments of the invention including one in which the carrier leads are laminated directly to the leads of an IC package.
Abstract:
PROBLEM TO BE SOLVED: To reduce thermal stress applied on external terminals for surface mounting in an electromagnetic relay, and improve reliability of mounting and reliability of the device on which the electromagnetic relay is mounted. SOLUTION: The electromagnetic relay 1 has a plurality of external terminals which are formed protruded from a case 5 to constitute the body. As the external terminals, a plurality of surface mounting terminals 11-18 are provided whose top end portions are formed so as to be located on a common plane. Furthermore, through-hole terminals 21-22 are provided whose top end portions extend protruded from the case 5 further than the common plane on which the top end portions of the surface mounting terminals 11-18 are located. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a printed board unit and a semiconductor package which can maintain connections between a printed wiring board and electronic circuit parts in spite of an occurrence of a stress. SOLUTION: A coefficient of thermal expansion of electronic circuit parts 15 differs from that of a printed wiring board 14. As a result, an expansion difference arises between the electronic circuit parts 15 and the printed wiring board 14 based on a temperature change. The biggest stress is caused at an angle of a quadrilateral. A second conductive terminal 37 is arranged at a corner of the quadrilateral. The second conductive terminal 37 can contact with at least either one of the printed wiring board 14 and the electronic circuit parts 15 in a relative displacement fashion. As a result, a relative displacement of the second conductive terminal 37 can be carried out to the printed wiring board 14 and the electronic circuit parts 15 irrespective of the expansion difference. The second conductive terminal 37 continues to contact with the printed wiring board 14 and the electronic circuit parts 15. The connections are maintained between the printed wiring board 14 and the electronic circuit parts 15. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a printed circuit board assembly and an electronic device utilizing the printed circuit board assembly. SOLUTION: A printed circuit board assembly is used for providing electrical connection between multiple electronic elements, and comprises a first printed circuit board having a first conductor pattern and a second printed circuit board having a second conductor pattern. The first printed circuit board is positioned horizontally above the second printed circuit board, and has an area that is smaller than that of the second printed circuit board. The first conductor pattern of the first printed circuit board is electrically connected to the second conductor pattern of the second printed circuit board. The printed circuit board assembly can replace a conventional multilayer wiring board, and is manufactured at a lower cost. An electronic device utilizing the printed circuit board assembly is manufactured at a lower cost. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
A method for preparing an integrated circuit for connection to a surface, the integrated circuit including lead contacts and leadless contacts, is provided. The method includes providing the integrated circuit, applying a first solder paste to the leadless contacts, forming solder balls on the applied solder paste, heating the solder balls, thereby removing at least a portion of the first solder paste and bringing the solder balls into electrical contact with the leadless contacts, the base of the solder balls being generally aligned in a plane, and bending the lead contacts into gull wings, with the base of the gull wings being substantially coplanar with the plane. The base of the gull wings and the base of the at least one of the solder balls collectively generally define a contact plane for potential future contact with the surface.
Abstract:
La présente invention concerne un module indicateur de tableau de bord comprenant dans un boîtier un moteur rotatif, un arbre de sortie, des moyens de réduction mécanique liés au moteur, au moins une bobine d'alimentation électrique, des pattes de connexion électrique liées aux bobines sortant dudit boîtier et des éléments de contact électrique caractérisé en ce que lesdits éléments de contact électrique peuvent être montés sur les pattes de connexion afin de réaliser une connectique sans soudure au circuit imprimé ou bien retirés des pattes de connexion afin de permettre la soudure directe des pattes de connexion du moteur au circuit imprimé.
Abstract:
An orthogonal backplane connector systems having midplane footprints that provide for continuity of impedance and signal integrity through the midplane and allow for the same connector to be coupled to either side of the midplane. This design creates an orthogonal interconnect without taking up unnecessary PCB real estate. The midplane circuit board may include a first differential signal pair of electrically conductive vias disposed in a first direction, and a second differential signal pair of electrically conductive vias disposed in a second direction that is generally orthogonal to the first direction.