Abstract:
According to the present invention, there is provided a holder having a pressure flange not to be easily disengaged from a small-sized electronic part in pressing and accommodating the holder having the small-sized electronic part in a mounting recess. A holder includes a projecting portion protruding from a pressing flange toward a cylinder axis of a holding portion, formed in a portion having a predetermined length of an inner edge of the pressing flange. With this construction, when the holder accommodating a small-sized electronic part is mounted to a casing of an apparatus, even if the pressing flange is rolled up and about to be disengaged from the small-sized electronic part, the projecting portion engages with the small-sized electronic part, thereby preventing the pressing flange from being rolled up.
Abstract:
An electrical component includes a base object made of two insulating objects with curved external surfaces, and external electrodes. Each of the external electrodes is disposed adjacent to one of the two insulating objects. A central electrode is disposed inside of the base object. The central electrode includes a flat mounting surface on an exterior of the component.
Abstract:
A stand-off mounting apparatus includes an insulative carrier for off-board mounting of leaded or surface-mount components, particularly large temperature-sensitive discrete components such as capacitors. The carrier has a component-mounting surface that is elevated relative to the circuit board, and is positioned with respect to the circuit board such that the circuit board area under the mounting surface of the carrier is available for the placement of smaller non-temperature-sensitive components. The off-board components are mounted on the component-mounting surface of the carrier, and the carrier may include support features for providing additional mechanical support for the components. Electrical leads for electrically coupling the elevated components to the circuit board may be insert-molded in the carrier, or may be inserted into plated through-holes in the carrier.
Abstract:
An electronic apparatus include a housing, a circuit board held in the housing, and large electronic components held in the housing and electrically coupled to the circuit board. The housing has a mounting surface, and the electronic apparatus is mounted to an object at the mounting surface. The large electronic components are arranged in a three-dimensional manner with respect to the mounting surface in such a manner that at least one of the large electronic components overlaps at least one of the large electronic components in a direction toward the mounting surface.
Abstract:
A chip fuse includes a substrate, a fuse element extending on the substrate, and first and second wire leads coupled to the fuse element. Contact pads may extend over portions of the fuse element and establish electrical connection to the first and second leads. A conductive medium such as solder encircles the substrate to securely form a mechanical and electrical connection to the leads.
Abstract:
A manufacturing method for legless electronic parts used in a surface mounting type printing circuit board is disclosed. The legless electronic parts are made from leg type electronic elements. The method comprises the steps of: manufacturing a leg type electronic part and painting; cutting legs of a leg type parts to become legless electronic parts; pressing metal caps into two ends of the legless parts for replacing the legs; testing the resistance of a legless parts for determining the resistance, error and fault ratio; removing unqualified parts; and packing the tested parts.
Abstract:
A printed circuit board and method for reducing the impedance within the reference path and/or saving space within the printed circuit board. In one embodiment of the present invention, a printed circuit board comprises a plurality of conductive layers. The printed circuit board further comprises two or more vias for interconnecting two or more conductive layers. The printed circuit board further comprises an electrical component embedded in a particular via between two conductive layers to reduce the impedance within the reference path and/or save space within the printed circuit board.
Abstract:
A monolithic inductor (10) comprises an elongated substrate having opposite distal ends (14) and (16), each end having an end cap extending from the opposite ends to support the substrate (12) in spaced relation from a PC board, the end caps being formed with non-mounting areas and a deflection area for preventing the substrate resting on the non-mounting area, a substantially steep side wall (16) on the substrate side of the end cap (14) at the non-mounting area, and an inclined ramp extending up to a top of the end cap on the substrate side substantially opposite the non-mounting area, an electrically conductive soldering band (30) extending partially around each end cap, each soldering band having a gap (34) at the non-mounting area for thereby reducing parasitic conduction in the band (30), and an electrically conductive layer formed on the substrate in a helical path extending between the opposite ends and in electrical contact with the conductive soldering bands (30) at the ramps (120).
Abstract:
A crystal oscillating device comprises an outer case having a longitudinal axis, a cavity, a pair of first surfaces extending along the longitudinal axis, a pair of second surfaces extending in a direction generally transverse to the longitudinal axis, a first opening portion in one of the first surfaces for providing access into the cavity, a second opening portion in one of the second surfaces, and a groove in the other of the second surfaces. A crystal oscillator is disposed in the cavity of the outer case and has lead terminals extending through the second opening portion of the outer case for electrically connecting the crystal oscillator to a circuit board. A bonding material is disposed in the cavity of the outer case for bonding the crystal oscillator to the outer case. A connecting member is disposed in the groove of the outer case for connecting the outer case to the circuit board.
Abstract:
A printed-circuit board and a method for the precise assembly of electronic components on a surface of the printed-circuit board, the electronic components being electrically and conductively attached to printed-circuit board by a reflow soldering technique. For this purpose, a printed-circuit board is used that has sections for receiving electronic components on its surface. The sections being at least partially adapted to the outside contour of respective electronic components. The sections are configured as slotted contours or grooves and shaped to secure that the electronic components mounted after the application of solder paste are held in their desired positions prior to the actual soldering process. In addition, the assembled printed-circuit board can be connected to a housing composed of dome-type extensions of an at least partly deformable material. The extensions engage in cutouts provided in the printed-circuit board and pass through the latter. A positive-linkage and/or frictional housing/printed-circuit board connection is established by deformation of the extensions. Further, an overvoltage protection plug for terminal blocks of the telecommunication technique with a voltage surge arrester can be mounted that combines the two functions "earthing contact" and "fail-safe contact" in one part.