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connection contacts

A technology for connecting contacts and contact areas, used in contact manufacturing, sustainable manufacturing/processing, final product manufacturing, etc., to solve problems such as unstable solder connections, damaged solder connections, low tensile force, etc.

Active Publication Date: 2016-03-02
PHOENIX CONTACT GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Each individual disadvantage ultimately leads to an overall unstable solder connection, i.e. the SMD connection is only able to absorb low tensile forces (a few Newtons)
Such tensile forces are generated on the component itself due to thermal factors, vibrations, etc., resulting in screw pressure, which damages the welded connection

Method used

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Experimental program
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Embodiment Construction

[0029] figure 1 Connection contacts produced according to conventional techniques are shown. The contact is generally punched in the direction of the shears S from the large sheet 2 provided with the coating 1 . As the figure clearly shows, substantially no coating 1 is provided on the cut edge.

[0030] Although a certain amount of coating 1 is to be expected along the cut edge depending on the punching direction, this is generally not sufficient to meet the quality requirements, especially those of standards such as IEC60068-2-58.

[0031] Therefore, in the past, it was always necessary to increase the coating 1, for example by post-processing the surface of at least a part of the cut edge, since soldering on uncoated cut edges is generally undesirable, the coating is pre-tinned by fire Or produced by electric remelting tin (Sn).

[0032] This is in e.g. figure 2 It is clearer in , where the front surface 5 of the solder connection has not been post-processed compared t...

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PUM

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Abstract

The invention relates to a connection contact for SMD components for solderable contact with a circuit board. The connecting contact comprises a metallic material (2), and the metallic material comprises at least partially a coating (1) of a different metallic material. The connecting contact has a substantially chip contact area (7) for solderable contact with the circuit board (3) and includes edge areas (4, 5, 6). At least one part of the edge region (4, 5, 6) is basically a chip contact region (7), thereby forming a solder fillet for solderable contact with the circuit board (3). The invention also proposes related connection contacts for the production of SMD components soldered into contact with a circuit board (3). The method comprises the steps of punching a metal strip (1, 2), bending the metal strip (1, 2), thereby creating a conductive area (8) and a sheet contact area (7), and forming an edge area (4, 5, 6), and at least a part of the edge area (4, 5, 6) is away from the sheet contact area (7), thereby forming a solder fillet for solder connection to the circuit board (3).

Description

technical field [0001] The invention relates to a connection contact for SMD components. Background technique [0002] Surface mounted devices, or SMD components, are used in a variety of products because they can be easily assembled on circuit boards and easily soldered. [0003] Integrated circuits and electromechanical components used in SMD technology are provided with multiple connection contacts for surface soldering. [0004] In order to manufacture these connecting contacts on an economically reasonable scale, in the past they were usually produced from pre-tinned steel strips or wires. [0005] However, such a process has the disadvantage that, as a result of the cutting, at least part of the cut edges are not pre-tinned, so post-processing of the cut edges is necessary to achieve a stable soldering. [0006] In addition to the necessity of additional production steps, each step necessarily involves some level of defect. [0007] In particular, it is known that w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K3/34H01L23/495
CPCH01L23/49555H01L23/49582H05K3/3426H05K2201/1031H05K2201/10984H01L2924/0002Y10T29/49204Y02P70/50H01L2924/00H01B1/02H01R43/16
Inventor 迪特尔·霍尔斯特尤里奇·罗泽迈尔
Owner PHOENIX CONTACT GMBH & CO KG