Wiring board and method for manufacturing the same
    372.
    发明专利
    Wiring board and method for manufacturing the same 有权
    接线板及其制造方法

    公开(公告)号:JP2013155410A

    公开(公告)日:2013-08-15

    申请号:JP2012017261

    申请日:2012-01-30

    Abstract: PROBLEM TO BE SOLVED: To provide a wiring board which has excellent reflow resistance and aging resistance, and is high in mounting reliability, and a method for manufacturing the same.SOLUTION: The wiring board 1 includes: an electrode 12 composed of Cu or a Cu alloy; and a plating film 14 formed on the electrode 12, and the plating film 14 is composed of a laminate film in which an electroless nickel plating layer 18, an electroless palladium plating layer 20, and an electroless gold plating layer 22 are formed in order from the electrode 12 side. The electroless nickel plating layer 18 is formed by co-deposition of Ni, P, Bi and S, in which the content of P is 5 mass% or more but less than 10 mass%, the content of Bi is 1-1,000 ppm by mass, and the content of S is 1-2,000 ppm by mass, and the mass ratio (S/Bi) of the content of S to the content of Bi is more than 1.0.

    Abstract translation: 要解决的问题:提供一种具有优异的耐回流性和耐老化性,并且安装可靠性高的布线板及其制造方法。解决方案:布线板1包括:由Cu或 铜合金; 以及形成在电极12上的镀膜14,镀膜14由层叠膜构成,其中依次形成化学镀镍层18,无电镀钯层20和无电镀金层22 电极12侧。 通过共沉积Ni,P,Bi和S形成化学镀镍层18,其中P的含量为5质量%以上且小于10质量%,Bi的含量为1-1000ppm,通过 质量,S含量为1-2000质量ppm,S含量与Bi含量的质量比(S / Bi)大于1.0。

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