Abstract:
A lead 20 protrudes from a main body 19a of a connector 18. A connector electrode 13 extends along a surface 10a of a printed circuit board 10. A solder paste 26, applied onto the connector electrode 13, is offset a predetermined distance inward from the edge of the printed circuit board 10. The lead 20 is shifted along the surface of connector electrode 13 inwardly from the edge of the printed circuit board 10 until a distal end 20a of the lead 20 is brought into contact with the solder paste 26. Then, the solder paste 26 is melted under the condition where the distal end 20a is brought into contact with the solder paste 26, thereby soldering the connector 18 on the printed circuit board 10.
Abstract:
An apparatus comprising a multi-layer substrate including a plurality of layers of insulative material, at least one well formed in at least one of the layers, the well extending from an outer surface of the multi-layer substrate to an inner surface of the multi-layer substrate, and an electrically conductive component formed within the well on the inner surface of the multi-layer substrate; and a device having at least one electrically conductive lead or wire extending into the well and being in direct physical contact with the electrically conductive component formed on the inner surface of the multi-layer substrate. Also, a method of manufacturing an apparatus comprising the steps of forming a multi-layer substrate including a plurality of layers of insulative material, at least one well formed in at least one of the layers, the well extending from an outer surface of the multi-layer substrate to an inner surface of the multi-layer substrate, and an electrically conductive component formed within the well on the inner surface of the multi-layer substrate; and extending at least one electrically conductive lead or wire from a device into the well such that the lead or wire is in direct physical contact with the electrically conductive component formed on the inner surface of the multi-layer substrate.
Abstract:
An apparatus comprising a multi-layer substrate including a plurality of layers of insulative material, at least one well formed in at least one of the layers, the well extending from an outer surface of the multi-layer substrate to an inner surface of the multi-layer substrate, and an electrically conductive component formed within the well on the inner surface of the multi-layer substrate; and a device having at least one electrically conductive lead or wire extending into the well and being in direct physical contact with the electrically conductive component formed on the inner surface of the multi-layer substrate. Also, a method of manufacturing an apparatus comprising the steps of forming a multi-layer substrate including a plurality of layers of insulative material, at least one well formed in at least one of the layers, the well extending from an outer surface of the multi-layer substrate to an inner surface of the multi-layer substrate, and an electrically conductive component formed within the well on the inner surface of the multi-layer substrate; and extending at least one electrically conductive lead or wire from a device into the well such that the lead or wire is in direct physical contact with the electrically conductive component formed on the inner surface of the multi-layer substrate.
Abstract:
A surface-mounted electronic connector in which board connecting end portions of contacts of the connector extend in mutually parallel, closely spaced apart, coplanar relation and are maintained spaced apart above the board by feet of equal height which depend from tips of respective end portions. The height of each foot is not less than the sum the above-board height of a connection portion of a conductive layer of the board and the height of a reflow solder layer or pad thereon.
Abstract:
The prior art terminal for making a solder bond between a lead and a bond site is modified so as to enhance the reliability of the solder bond. In one embodiment, this modification entails solder relief terminals: solder relief holes through the terminal, notches, grooves or ridges on the surface of the terminal, or bending of the terminal. In a second embodiment, this modification entails predeposit of a predetermined and controlled amount of solid solder and flux on the terminal.
Abstract:
A semiconductor device comprises an inverted-tray-shaped support frame having a concave inner surface, a semiconductor element supported by the support frame at the center of its inner surface, and a plurality of leads which are formed on the inner surface of the support frame over an insulative layer interposed therebetween, and which extend from the center of the support frame outward to the periphery hereof and are electrically connected at their inner root ends to respective electrodes of the semiconductor element. The support frame reinforces and preserves the mechanical strength of the leads, which can therefore be spaced more closely and accurately.
Abstract:
An improved leadform for use with surface mount components is described. The improved leadform provides a connection to a printed circuit substrate which is highly resistant to stress related failures. The leadform is configured so that the connection utilizes a relatively greater area of the leadform for contact with a solder connection resulting in a more compliant connection. In addition, the present invention provides a preparation for the printed circuit media which allows the substrate media to absorb stresses which occur due to thermal cycling.
Abstract:
The control device (1) is equipped with an electrical component (2) in which heat is generated. Said heat is dissipated over an elongated metal part (10) whose one face (12) is soldered to the component (2). The face (12) oriented toward the component (2) has a shape that increases the size of its surface. The shape is outwardly arched and can be provided with a ribbing.
Abstract:
The invention relates to a method for fixing an especially modularly mounted, miniaturised component (2) onto a base plate (1) by means of a soldered joint. One side (4) of the component (2) is coated with a layer (5) of soldering material and the base plate (1) is coated at least partially with a layer of metal (6, 6', 6''). The component (2) is positioned above the base plate (1) with the metal layer and the layer of soldering material (5) facing each other without touching, at a vertical distance from each other. Heat energy is then supplied from the side of the base plate (1) in order to melt the soldering material of the soldering material layer (5) on the side (4) of the component (2) until a drop is formed. The component (2) and the base plate (1) are mutually fixed to each other when the drop of soldering material (5') fills the gap between them.