Patent classifications
H05K1/0206
Barrier for Preventing SMT Components from Drifting
The invention relates to a method for soldering an SMD component (1) to a circuit carrier (2) in a positionally stable manner, having the following steps: a) providing a circuit carrier (2) comprising at least one printed circuit board contact surface (2a), which is coated with a soldering paste (3) and which is designed to electrically, thermally and/or mechanically contact the SMD component (1) to be connected, wherein a number of filled vias (6), which cannot be coated with molten solder, pass through the circuit carrier (2) at least in the region of the printed circuit board contact surface (2a), b) applying at least one adhesive point (4a, 4b, 4c, 4d, 4e) onto the circuit carrier (2) such that the adhesive point (4a, 4b, 4c, 4d, 4e) delimits the printed circuit board contact surface (2a) coated with soldering paste (3) on at least one side of an edge point (R.sub.a, R.sub.b) paired with the soldering paste (3), c) placing an SMD component (1), which comprises at least one component contact surface (1a), on the printed circuit board contact surface (2a) coated with soldering paste (3) such that the at least one component contact surface (1a) electrically, thermally and/or mechanically contacts the printed circuit board contact surface (2a) via the soldering paste (3) lying therebetween, said placement being carried out and the position of said at least one adhesive point (4a, 4b, 4c, 4d, 4e) being selected in step b) such that the SMD component (1) rests on the soldering paste (3) without contacting the at least one adhesive point (4a, 4b, 4c, 4d, 4e), d) waiting for a specifiable duration t until a curing process of the at least one adhesive point (4a, 4b, 4c, 4d, 4e) is complete, and e) heating, melting and subsequently cooling the soldering paste (3) in order to produce an electric, thermal and/or a mechanical connection between the at least one component contact surface (1a) of the SMD component (1) and the at least one printed circuit board contact surface (2a) of the circuit carrier (2), wherein a barrier (5) is formed using the at least one adhesiv
PACKAGED STACKABLE ELECTRONIC POWER DEVICE FOR SURFACE MOUNTING AND CIRCUIT ARRANGEMENT
A power device for surface mounting has a leadframe including a die-attach support and at least one first lead and one second lead. A die, of semiconductor material, is bonded to the die-attach support, and a package, of insulating material and parallelepipedal shape, surrounds the die and at least in part the die-attach support and has a package height. The first and second leads have outer portions extending outside the package, from two opposite lateral surfaces of the package. The outer portions of the leads have lead heights greater than the package height, extend throughout the height of the package, and have respective portions projecting from the first base.
Thermoelectric power generation module mounting substrate
A thermoelectric power generation module mounting substrate includes: a printed substrate having a heat transfer through-hole penetrating a first surface and a second surface opposite to the first surface, and being in contact with a housing on the second surface; and a thermoelectric power generation module mounted on the printed substrate in contact with the first surface.
CIRCUIT PART AND METHOD OF MANUFACTURING CIRCUIT PART
A circuit part is provided that provides both high heat dissipation and high adhesion of its circuit wiring. A circuit part includes: a metal member; an insulating resin layer located on the metal member; circuit wiring including a plating film located on the insulating resin layer; and a mounted component mounted on the circuit wiring and electrically connected to the circuit wiring, wherein a plurality of non-penetrating holes are provided in a wiring region, the non-penetrating holes being filled with the plating film, the wiring region being a portion of the resin-layer surface on which the circuit wiring is located, and the ratio of the depth d of the non-penetrating holes to the width D of the non-penetrating holes, d/D, is 0.5 to 5.
ELECTRONIC DEVICE
An electronic device is downsized while suppressing performance degradation of the electronic device. In the electronic device, a power module including a power transistor is arranged in a first region on a back surface of a through hole board having a plurality of through hole vias having different sizes while a pre-driver including a control circuit is arranged in a second region on a front surface of the board. In this case, in a plan view, the first region and the second region have an overlapping region. The power module and the pre-driver are electrically connected to each other via a through hole via. The plurality of through hole vias include a through hole via having a first size, a through hole via which is larger than the first size and in which a cable can be inserted, and a through hole via in which a conductive member is embedded.
Package substrate inductor having thermal interconnect structures
Embodiments include a microelectronic device package structure having an inductor within a portion of a substrate, wherein a surface of the inductor is substantially coplanar with a surface of the substrate. One or more thermal interconnect structures are on the surface of the inductor. A conductive feature is embedded within a board, where a surface of the conductive feature is substantially coplanar with a surface of the board. One or more thermal interconnect structures are on the surface of the conductive feature of the board, where the thermal interconnect structures provide a thermal pathway for cooling for the inductor.
ELECTRONIC CIRCUIT APPARATUS
There is provided an electronic circuit apparatus in which the heat generated at an electronic component can be transferred to a heat spreader efficiently. An electronic circuit apparatus includes a dielectric substrate, an electronic component, a heat spreader, and a conductive via. The conductive via electrically and thermally connects the electronic component and the heat spreader. The conductive via extends from the first surface to at least an interior of the heat spreader and is in surface-contact with the heat spreader.
PRINTED CIRCUIT BOARDS WITH PLATED BLIND SLOTS FOR IMPROVED VERTICAL ELECTRICAL AND/OR THERMAL CONNECTIONS
In one aspect, a PCB is provided. The PCB includes at least one insulating layer, a blind slot, and at least one via. The at least on insulating layer includes a first surface and a second surface opposite the first surface. The blind slot is plated and formed in the at least one insulating layer, where the blind slot partially extends from the first surface to the second surface, and where the blind slot includes a conductive plating bonded along a major surface of the blind slot. The at least one via is electrically conductive and filled, where the at least one via is coupled with and extends between the conductive plating of the blind slot and the second surface of the at least one insulating layer.
FLEX-LESS MULTILAYER CERAMIC SUBSTRATE
In one example embodiment, an optoelectronic assembly includes a multilayer ceramic substrate that includes multiple ceramic layers and a via disposed through at least one of the ceramic layers. The via may be formed from a conductive material that is configured to communicate a signal through the via. The multilayer ceramic substrate may be configured to dissipate heat emitted by an electronic component coupled to the multilayer ceramic substrate.
Solder void reduction between electronic packages and printed circuit boards
An apparatus includes a printed circuit board. The printed circuit board includes at least one conductive layer on top a first dielectric layer, wherein the at least one conductive layer comprises at least one of a ground plane and a power plane. The printed circuit board includes a second dielectric layer on top of the at least one conductive layer. The printed circuit board includes a thermal pad on top of the second dielectric layer. The printed circuit board is fabricated by forming at least one plated through hole for electrically coupling the thermal pad to the at least one conductive layer. The printed circuit board is fabricated by backdrilling the at least one plated through hole to remove a portion of the conductive material, wherein subsequent to the backdrilling the conductive material remaining in the at least one plated through hole electrically couples one or more of the at least one conductive layer to the thermal pad.