Method and process of manufacturing robust high temperature solder joints
    11.
    发明授权
    Method and process of manufacturing robust high temperature solder joints 有权
    制造坚固的高温焊点的方法和工艺

    公开(公告)号:US07566592B2

    公开(公告)日:2009-07-28

    申请号:US11552973

    申请日:2006-10-26

    Abstract: The principles described herein relate to methods for soldering electrode terminals, pins or lead-frames of commercial electric components for high temperature reliability. In one embodiment, prior to soldering the electric components, a pre-plated solder layer is removed from the lead frame or pins, and nickel and/or gold films are formed with electroless plating. The removal of the pre-plated solder layer avoids excess pre-plated Sn with high-Pb solder that lowers the melting point to between 180° C. and 220° C. and weakens solder joints. The nickel layer formed with an electroless plating acts as a barrier to the interdiffusion of tin from solder with copper of the lead frame material, which may otherwise occur at high temperatures. Interdiffusion forms an intermetallic compound layer of copper and tin and degrades solder joint strength. The novel soldering processes improve high temperature reliability of solder joints and extend electronics life-time.

    Abstract translation: 本文描述的原理涉及用于焊接商业电气部件的电极端子,引脚或引线框架以实现高温可靠性的方法。 在一个实施例中,在焊接电气部件之前,从引线框或引脚去除预镀焊料层,并且用无电镀形成镍和/或金膜。 去除预镀焊料层避免了具有高Pb焊料的过量预镀Sn,将熔点降低到180℃和220℃之间,并削弱焊点。 用无电电镀形成的镍层作为阻挡锡从焊料与铜框架材料的铜的相互扩散,否则可能会在高温下发生。 相互扩散形成铜和锡的金属间化合物层,并降低焊点强度。 新颖的焊接工艺提高了焊点的高温可靠性,延长了电子设备的使用寿命。

    APPARATUS AND METHOD FOR FORMING SOLDER WICKING PREVENTION ZONE AND ELECTRONIC PART
    18.
    发明申请
    APPARATUS AND METHOD FOR FORMING SOLDER WICKING PREVENTION ZONE AND ELECTRONIC PART 审中-公开
    焊接预防区和电子部件的装置和方法

    公开(公告)号:US20080041923A1

    公开(公告)日:2008-02-21

    申请号:US11622366

    申请日:2007-01-11

    Abstract: The present invention provides an apparatus for forming a solder wicking prevention zone operating when a connector member with a connector is processed using molten solder, to hinder the solder from spreading to a contact site of the connector in a wettable manner. The apparatus includes a main forming agent tank which stores a main forming agent used to form the solder wicking prevention zone, an ejection nozzle which ejects the main forming agent stored in the main forming agent tank, and a direction control section which controls an ejection direction of the main forming agent ejected by the ejection nozzle. The direction control section controls the ejection direction of the main forming agent ejected by the ejection nozzle, so as to apply the main forming agent to a predetermined position on the connector member to form the solder wicking prevention zone.

    Abstract translation: 本发明提供一种用于形成焊料芯吸防止区的装置,当使用熔融焊料处理具有连接器的连接器构件时,可以以可润湿的方式阻止焊料扩散到连接器的接触部位。 该装置包括主要形成剂罐,其存储用于形成防止焊料防止区的主要成形剂,喷射主要成型剂储存在主成形剂中的喷嘴和控制喷射方向的方向控制部分 由喷嘴喷射的主要成形剂。 方向控制部控制由喷嘴喷射的主成形剂的喷射方向,以将主成形剂施加到连接器构件上的预定位置,以形成防止焊料防止芯的区域。

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