Abstract:
A thermal management system/method allowing efficient electrical/thermal attachment of heat sourcing PCBs to heat sinking PCBs using reflow/wave/hand soldering is disclosed. The disclosed system/method may incorporate a combination of support pins, spacer pads, and/or contact paste that mechanically attaches a heat sourcing PCB (and its associated components) to a heat sinking PCB such that thermal conductivity between the two PCBs can be optimized while simultaneously allowing controlled electrical conductivity between the two PCBs. Controlled electrical isolation between the two PCBs is provided for using spacer pads that may also be thermally conductive. Contact paste incorporated in some embodiments permits enhanced conductivity paths between the heat sourcing PCB, a thermally conductive plate mounted over the heat sourcing PCB, and the heat sinking PCB. The use of self-centering support pins incorporating out-gassing vents in some embodiments allows reflow/wave/hand soldering as desired.
Abstract:
A method of assembling a circuit board may include inserting a first electrical terminal into a first side of a circuit board, and applying a second layer of solder paste to a second side of the circuit board, the second side disposed opposite of the first side. The first electrical terminal may include a solder tab, a maximum length of the solder tab may be shorter than a minimum thickness of the circuit board, and if the first electrical terminal is inserted into the circuit board, the solder tab may extend at least partially into the circuit board without extending entirely through the circuit board. One or more electrical terminals with short and/or long solder tabs may be inserted into the second side of the circuit board and/or one or more electrical components may be attached to second side of circuit board.
Abstract:
In a method for connecting lead wires to a touch panel, the method includes the steps of: providing through holes 9a to 9d the number of which corresponds to the number of electrode ends by perforation in a lower electrode plate 3; using a metal-pin 11 having a pin-shaft 11b and a disk shaped pin-head 11a with a diameter larger than an outer diameter of the pin-shaft; inserting the pin-shaft 11b into a metal-pin fixing hole formed corresponding to the through hole 9a at a circuit 10c in a connector tail of a lead wire 10, whereby the pin-shaft 11b is erectly provided on the connector tail of the lead wire 10; and inserting the pin-shafts 11b to 14b into the through holes 9a to 9d, and in addition, electrically connecting the pin-shaft inserted into a lower electrode plate 3 through a conductive adhesive 15 to electrode ends 6c, 7c, 6d, 7d.
Abstract:
A connection pin for mounting in a through-hole provided in a component carrier of an electronic assembly, the connection pin comprising an anchoring part adapted for insertion into said through-hole, a contact part adapted to extend outside said through-hole, and a flange part adapted to abut against said component carrier and located between said anchoring part and said contact part. The connection pin is provided with an internal cavity, which is provided with an outer opening at a free end of the anchoring part. The contact part is provided with a protruding elongated interconnection member at a free end thereof, and the respective shapes of the interconnection member and the internal cavity are such that the interconnection member is adapted for insertion into a corresponding internal cavity of another similar connection pin. A method for producing an electronic assembly with stackable modules is also disclosed.
Abstract:
A semiconductor device includes wiring boards each having an insulating board, conductor circuits and through-holes, the insulating board having top and bottom surfaces, the conductor circuits formed on the top and bottom surfaces, the through holes penetrating the insulating board and electrically connecting the conductor circuits of the top and bottom surfaces; conductor posts each having flange, head and leg portions, the flange portion having first and second surfaces and having an external diameter larger than that of the through-hole, the head portion protruding from the first surface, the leg portion protruding from the second surface; and electronic components each having an electrode formed on one or more surfaces and connected to the leg portion. The head portion is inserted until the first surface of the flange portion comes into contact with the bottom surface of the wiring board and electrically connected at an inner wall of the through-hole.
Abstract:
Various embodiments of the present invention provide an anchor, circuit board assembly, and method for operably engaging an electronic component with a circuit board having a first side and a second side. Anchor embodiments include an anchor portion configured for receiving at least a portion of the electronic component and a pair of anchor legs flexibly extending from the ends of the anchor portion and configured for insertion into apertures defined in the circuit board. The anchor further includes a compression element slidably disposed about the anchor legs and movable between an unlocked position and a locked position. The compression element is configured for urging the anchor legs towards one another when moved from the unlocked position to the locked position such that the anchor is secured in the apertures when the compression element is in the locked position.
Abstract:
The present invention relates generally to permanent interconnections between electronic devices, such as integrated circuit packages, chips, wafers and printed circuit boards or substrates, or similar electronic devices. More particularly it relates to high-density electronic devices.The invention describes means and methods that can be used to counteract the undesirable effects of thermal cycling, shock and vibrations and severe environment conditions in general.For leaded devices, the leads are oriented to face the thermal center of the devices and the system they interact with.For leadless devices, the mounting elements are treated or prepared to control the migration of solder along the length of the elements, to ensure that those elements retain their desired flexibility.
Abstract:
To provide high reliable surface mounting oscillator that solder does not leak out by heat from the oscillator. The base print board with a terminal on the first surface and a concave on the second surface which is the opposite side of the first surface, the metal strut fixed to the concave, the sub print board has piezoelectric vibrator supported by the metal strut, the base print board, the cover which covers the metal strut and the sub print board.
Abstract:
The present invention relates to a two-level mounting board in which a second substrate is supported horizontally by a metal pin above a first substrate having a mounting electrode on an outer base surface, the free, lower end of the metal pin is inserted in a hole provided in the surface of the first substrate, and the metal pin is affixed by solder to an annular electrode land provided on the surface of the first substrate to form an outer periphery of the hole, wherein part of the ring of the annular electrode land is cut away to open the same. This provides a two-level mounting board in which metal pins can be connected reliably to the first substrate to support the second substrate horizontally, and a crystal oscillator using the same.
Abstract:
A sinking type electrical connector is adapted for coupling to a circuit board. The sinking type electrical connector includes a body and at least one limiting unit. The body has a front end portion, a connecting portion provided in the front end portion, and a top surface. The limiting unit is provided at one side of the body and includes a plurality of limiting portions respectively located at different levels. A selected one of the limiting portions of the limiting unit which are at different levels is brought to engage the circuit board so that a distance from the top surface of the body to the circuit board is changeable.