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What is the difference between matte tin (Sn) and shiny tin finishes?

April 26, 2017difference finishes matte shiny SN tin

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What is the difference between matte tin (Sn) and shiny tin finishes?

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The type of tin (Sn) finish on leadframe products makes a difference in whisker growth. Several industry standard development organizations reject the use of shiny (or bright) tin. A matte tin finish is less susceptible to whisker growth. Freescale uses matte finish for tin plated leadframe products.