Abstract:
The objective of the present invention is to improve reliability in a solder connection portion between an electronic component and a wiring pattern. A pair of wiring patterns (31A and 31B) are formed on a circuit wiring board (30) with an insulation layer (37) therebetween. Each wiring pattern (31A and 31B) has a land (33a or 33b) and a wiring portion (34a or 34b) that is narrower than the land. By way of solder (42), a chip component (41) is soldered to the lands (33a and 33b). The x (width) direction center (Xa) of each connection portion (53) where a respective wiring portion (34a or 34b) is connected to a respective land (33a or 33b) is disposed at a position that is outside of both the region in which a region of predetermined width (Wc) of the chip component (41) extends in the x (longitudinal) direction, and the region in which a region of predetermined length (Lc) of the chip component (41) extends in a y (transverse) direction.
Abstract:
A protection device (10) for a contact strip of a telecommunication distribution device comprising a printed circuit board (11) and a plurality of arresters (12) mounted on the printed circuit board (11), wherein the printed circuit board (11) provides contact blades (15) thorough which the protection device (10) is connectable to contact springs of the contact strip, the contact blades (15) being arranged side-by-side as a plurality of contact blade pairs (16); wherein the printed circuit board (11) provides through holes (17, 18, 19) for receiving lead wires (20, 21, 22) of the arresters (12); wherein to each contact blade pair (16) there is assigned an arrester (12) in such a way that the respective arrester (12) is in electrical contact with the contact blades (15) of the respective contact blade pair (16); and wherein at least two lead wires (20, 21) of each arrester (12) are bent in such a way that bent ends of the bent lead wires (20, 21) of the arresters (12) extend on one side of the printed circuit board (11) in parallel to a plane defined by the printed circuit board (11).
Abstract:
A battery pack comprises one or more battery cells, a connecting circuit board connected to the one or more battery cells, the circuit board comprising one or more connectors for connecting the one or more battery cells to a protection circuit module PCM that has a through hole for receiving a corresponding one of the connectors, wherein each of the one or more connectors comprises a base portion and a receiving portion for holding solder, wherein the base portion is arranged to abut the PCM so as to seal one side of the through hole to prevent solder flowing through the through hole.
Abstract:
Provided is an electronic circuit device in which the bonding state of electrodes can be detected easily with high precision. The electronic circuit device has a stack structure in which a plurality of electronic circuit boards (1a, 1b, 100a, 100b, 100c) are stacked in three or more layers through ball electrodes (10a, 10b, 20a, 20b) bonded to electrode pads (30a, 30b, 40b, 50a, 60a), wherein the electrode pads are disposed such that transmission shaded images of a pair of the electrode pads provided between adjacent layers partially overlap each other and have a non-overlapping region in which the transmission shaded images of the pair of electrode pads are free from overlapping and such that the transmission shaded image of the non-overlapping region is at least partially free from overlapping with transmission shaded images of all the other electrode pads.
Abstract:
Die Erfindung betrifft eine Leiterplatte (1) und ein Verfahren zum lagegenauen Bestücken derselben mit elektronischen Bauelementen auf der Oberfläche (12) der Leiterplatte (1), wobei die elektronischen Bauelemente mit einer Reflow-Löttechnik elektrisch leitend und stabil mit der Leiterplatte (1) verbunden werden sollen. Hierfür wird eine Leiterplatte (1) verwendet, die auf der Oberfläche (12) der Außenkontur der jeweiligen Bauelemente zumindest teilweise angepaßte Bereiche (2,3) zur Aufnahme der elektronischen Bauelemente aufweist. Die Bereiche, die als Schlitzkonturen (3) oder eingearbeitete Nuten (2) ausgebildet sind, sichern, daß die nach dem Aufbringen von Lötpaste aufgesetzten elektronischen Bauelemente vor der eigentlichen Verlötung in der gewünschten Position gehalten werden. Zusätzlich läßt sich die bestückte Leiterplatte durch ein Gehäuse, das mit domartig ausgebildeten Ansätzen (14) aus zumindest einem teilweise verformbaren Material besteht, verbinden. Dabei werden die Ansätze die Leiterplatte, diese durchdringend, in dort eingearbeitete Ausnehmungen (14,15 oder 17) eingeführt und form- und/oder kraftschlüssig eine Gehäuse-Leiterplatten-Verbindung durch Verformung der Ansätze (14) erreicht. Außerdem kann ein Überspannungs-Schutzstecker für Anschlußleisten der Fernmeldetechnik mit einem Überspannungsableiter (4) aufgesetzt sein, der die beiden Funktionen "Erdkontakt" und "Fail-Safe-Kontakt" in einem Teil vereinigt und mit geringem Montageaufwand eine Bestückung erreicht werden kann.
Abstract:
Electrical interconnection structures are described. The electrical interconnection structures are formed by electrically interconnecting in a stack a plurality of discrete substrates (22, 24). By using a plurality of discrete substrates, a multilayer dielectric/electrical conductor structure can be fabricated from individual discrete substrates each of which can be tested prior to forming a composite stack so that defects in each discrete substrate can be eliminated before inclusion into the stack. Electrical interconnection between adjacent substrate is provided by an array of contact locations on each surface of the adjacent substrates. Corresponding contacts on adjacent substrates are adapted for mutual electrical engagement. Adjacent contact locations can be thermocompression bonded. To reduce the parasitic capacitance and coupled noise between the contact pads (26) the electrical conductors within the interior of each discrete substrate, the contact pads on each substrate have elongated shape. The elongated contact pads or lattice pads on adjacent substrates are nonparallel and preferably orthogonal so that the corresponding pads of adjacent substrates electrically interconnect an intersecting area which varies in location along the elongated contact pads as the placement of the adjacent substrates varies in the manufacture thereof.