发明授权
US08183463B2 Plating film, printed wiring board, and module substrate 有权
电镀膜,印刷电路板和模块基板

Plating film, printed wiring board, and module substrate
摘要:
The present invention provides a plating film 50 including a nickel plating layer containing phosphorus and a gold plating layer formed on the nickel plating layer, wherein the nickel plating layer has a phosphorus content of 11 to 16 mass %, and wherein (3×σ×100)/X is 10 or less, where X and σ are the average value and standard deviation of the phosphorus content in a surface of the nickel plating layer on the gold plating layer side, respectively; and a module substrate 100 having the plating film 50.
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