COATINGS AND METHODS FOR INHIBITING TIN WHISKER GROWTH
    90.
    发明授权
    COATINGS AND METHODS FOR INHIBITING TIN WHISKER GROWTH 有权
    用于抑制锡晶须生长的涂层和方法

    公开(公告)号:EP2051850B1

    公开(公告)日:2009-11-18

    申请号:EP07814146.2

    申请日:2007-08-16

    Abstract: An electrical component includes a conductive substrate (10), a tin layer (12) formed on the substrate, and a conformal coating (14) formed on the tin layer to impede tin whisker growth. The conformal coating comprises a polymer matrix (15) having gas-filled voids (16) dispersed therethrough. In a method for impeding tin whisker growth from a tin plating or finish formed over an electrical component, a gas is infused (30) into a liquid polymer. The tin plating or finish is then covered (32) with a conformal coating comprising the liquid polymer. Then, one or more of the temperature and pressure of the conformal coating are adjusted (34) to thereby create a dispersion of gas-filled voids comprising the gas in the conformal coating. .

    Abstract translation: 电气部件包括导电基板(10),在基板上形成的锡层(12)以及在锡层上形成的共形涂层(14),以阻止锡晶须生长。 保形涂层包含具有分散在其中的充气空隙(16)的聚合物基体(15)。 在用于阻止锡电镀或在电部件上形成的饰面上生长锡晶须的方法中,将气体注入(30)成液态聚合物。 然后用包含液体聚合物的保形涂层覆盖(32)镀锡或涂饰。 然后,调整保形涂层的一个或多个温度和压力(34),从而在保形涂层中产生包含气体的充气空隙的分散体。 。

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