No Tin Whisker Risk in TDK MLCCs (3): How does TDK ensure the tin finish will not promote whisker growth?
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A. Methyl Sulfonic tin is characterized as a matte finish in the plating industry and contains no organic brighteners. Bright finishes contain organic additives that may encourage tin whisker growth. Furthermore, after electroplating a heat treatment/annealing process (150C / 60min) is employed to relieve any residual plating stress on the component. Small grain size and annealed stress relief is a key point for whisker prevention during component manufacturing.

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