[tinwhiskers] Bourns announces hot dipping of tin - comments?
- From: "Fritz, Dennis D." <DENNIS.D.FRITZ@xxxxxxxx>
- To: <tinwhiskers@xxxxxxxxxxxxx>
- Date: Fri, 13 Feb 2009 10:55:34 -0500
I was wondering if there are any comments about this whisker mitigation
strategy announced in Electronic Design News yesterday by Bourns. This says
"hot dipped tin" as in lead-free. Seems to me if this is really pure tin, it
would be really hot exposure of the components, and I am seeking any data to
say how much better "dipped tin" would be than "plated tin" for mitigation.
Seems to me they could hot dip 3% lead in tin, but I guess that would be a
special order for RoHS exempt industries.
Denny
Thursday, February 12, 2009
Hot-dipped-tin process offers path to increased market share in competitive
times
Feb 12 2009 11:15AM | Permalink
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One of the concerns of companies complying with lead-free
<http://www.edn.com/hot-topic/48810/rohs.html> manufacturing processes under
the European ROHS <http://www.edn.com/hot-topic/48810/rohs.html> (Restriction
of Hazardous Substances) directive is the tin whiskers that can develop over
time on tin plating. Trim pot manufacturer Bourns <http://www.bourns.com/>
recently announced it was shifting its entire line to a new hot-dipped-tin
process for the trim pots' terminals. Bourns will no longer offer the old
matte-finished parts because of the tin-whisker danger. Although the company
made the change at the request of its customers, it won't be passing the price
increase on.
Emill Melliz, Bourns' potentiometer product line manager, puts the price
increase at between 5-7%. Why is Bourns eating this not-inconsiderable amount?
They see it as a way to increase market share in a very competitive economy.
Smart company.
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