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Subject:	Dendritic Growth and Tin Coatings
From:	"Fites, Robin" <[log in to unmask]>
Reply To:	(Leadfree Electronics Assembly Forum)
Date:	Tue, 20 May 2003 13:56:03 -0500
Content-Type:	text/plain
Parts/Attachments:	text/plain (19 lines)

Are 100% tin coatings more susceptible to dendritic growth than tin/lead
alloys?  I have seen a lot of information about increased chances of tin
whiskers with pure tin but I haven't seen any information on dendritic
growth.  Are pure tin coatings more likely to form the branchlike growth in
with humidity and applied voltage than the alloyed tin?

Robin Fites
Principal Materials Engineer
Harman/Becker Automotive Systems

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