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Tin

Views: 1178

Dhanish

#38629

Tin | 21 December, 2005

1)What is the difference between Bright and Matte Tin? 2)How do you perform Tin Whisker Test?

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#38639

Tin | 21 December, 2005

Primary differences between Matte Tin plating and Bright Tin plating are: * Temperature compatibility ** Matte Tin is compatible with the elevated temperatures of lead-free, reflow processing (250-260C). ** Bright Tin has a tendency to discolor (turn dark) when exposed to the higher lead-free, reflow processing environment. *Grain size ** Matte Tin has a larger grain size than Bright Tin. *Appearance ** Matte Tin has a normal whitish �matte� surface appearance ** Bright Tin has a bright (shiny) surface finish.

Search the fine SMTnet Archives to get started on tin whiskers. For instance: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=38301

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Dhanish

#38675

Tin | 24 December, 2005

Thanks Dave.What is it in normal SnPb finish?Is it Matte or Bright Tin.

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#38677

Tin | 25 December, 2005

Dunno, could be either bright or matte. Probably it's bright, because we like 'bright & shiny'.

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