Abstract:
A surface mount package (10) to encapsulate one or more semiconductor devices (28) has a standoff (12) that maintains the thickness (D) of solder columns (26) bonding the package (10) to an external circuit (38). The standoff (12) either extends over or circumscribes a central portion (16) of the package base (14). To enhance the thermal performance of the standoff (12), a solderable layer (48) enhances soldering of the standoff (12) to the external circuit (38). In alternative embodiments, the standoff (12) contains a flange (58) having a plurality of apertures (62) useful for either mechanically locking an adhesive (34) or for enabling irradiation of an adhesive (34) by a light source. The standoff (12) may contain protrusions (64, 65) for alignment, strength or circuit (66) routing.
Abstract:
The invention concerns an electric component which is in particular in the form of a coil and is preferably provided for an SMD assembly technique. In order to facilitate assembly, a mass point (4) is applied to one face of the component, in particular the top thereof, this mass point having a flat surface and not projecting laterally beyond the component.
Abstract:
The present invention provides a vertical card connector (12) capable of preventing an undesirable flow of melted solder which destroys proper contacts and of removing a corrosion-causing acid gas. The vertical card connector includes an insulating housing (14) with a plurality of contact terminals (26) and a heat-resisting insulating resin film (28) covering the bottom surface (14b) of the housing. Each contact terminal has a solder tail (26b) extending through film. A slight gap (30a) is created between the heat-resisting film (28) and the bottom surface of the housing. The solder tail of the contact is inserted into a corresponding plated through hole (1a) and soldered there. The film (28) prevents a melted solder from flowing past the solder tail toward a contact beam of the contact at a time of soldering. A gas evolved from the solder escapes through the gap between the circuit board and the bottom of the housing.
Abstract:
An electronic circuit component housing assembly (12) adapted to be mounted mechanically on a printed circuit (10), using a single mechanical fastener (49) to attach the circuit component housing assembly (12) in a unique alignment with the printed circuit (10), and simultaneously using the fastener (49) to provide force to press physically compliant electrical contacts (56) included in the circuit component housing assembly into electrical contact with terminal contact pads (70) on the printed circuit (10). Several electronic circuit components (1210, 1302, 1338) may be housed in separate hermetically sealed cavities (1208, 1300, 1336) and can be biased independently of one another. Thermal conductors (1188) are included in the base member (600, 1206) and a convection cooler (644, 1192) is mounted atop the assembly. The mechanical fastener (1230) also acts as a thermal conductor. A test probe assembly (130) including multiple contacts may be mounted on the electronic circuit component housing (12).
Abstract:
An assembly including a wire coil carrying bobbin (50) and a printed circuit board (34) having conductors (44) thereon. The bobbin (50) has first and second posts (68, 70) extending through corresponding apertures (40, 42) in the printed circuit board (34). Each post (68, 70) has first and second grooves (72, 74) extending along it and each end (82) of the coil wire (80) extends along and within said first groove (72), across the tip (84), and along and within said second groove (74) of the respective post (68, 70) and is soldered to the reverse side of the printed circuit board. Assembly is accomplished in one operation wherein a single aperture in the printed circuit board serves both as an aperture for the post and as an aperture for the wire end.
Abstract:
Die Erfindung betrifft ein Verfahren zum Verbinden eines Bauelementträgers (3) mit einer Leiterplatte (2), wobei der Bauelementträger (3) mittels mindestens eines Verbindungselementes (5) mit der Leiterplatte (2) verbunden wird. Des Weiteren betrifft die Erfindung einen Verbund (1) aus einer Leiterplatte (2) und einem Bauelementträger (3).
Abstract:
Eine Vorrichtung (100) zur Ausrichtung von Kontaktanschlüssen (210) eines elektrischen Bauteils (200) für die Montage auf einer Platine (20) einer elektrischen Schaltung (1) umfasst ein Trägerelement (110) mit mehreren Löchern (111) sowie mehrere Biegeelemente (120, 120a, 120b). Ein jeweiliges Ende (122) der Biegeelemente ragt in ein jeweiliges der Löcher (111) des Trägerelements hinein. Beim Einschieben eines jeweiligen der Kontaktanschlüsse (210) des elektrischen Bauteils (200) in das jeweilige Loch (111) wird das jeweilige Ende (122) der Biegeelemente (120, 120a, 120b) innerhalb des Lochs (111) verbogen und klemmt dadurch den jeweiligen Kontaktanschluss (210) des elektrischen Bauteils (200), so dass das elektrische Bauteil (200) an dem Trägerelement (110) fixiert ist.