[tinwhiskers] Re: Bourns announces hot dipping of tin - comments?

  • From: "Patrick Bruneel" <patrick@xxxxxxxxxxxxxxxx>
  • To: <tinwhiskers@xxxxxxxxxxxxx>
  • Date: Fri, 13 Feb 2009 11:11:01 -0600

Good one Werner

 

Would the eco-enemies have something to do with the current economy?

 

In Belgium 1/3 of their mobile network went down (and they still don't know
why).

 



  _____  

From: tinwhiskers-bounce@xxxxxxxxxxxxx
[mailto:tinwhiskers-bounce@xxxxxxxxxxxxx] On Behalf Of Werner engelmaier
Sent: Friday, February 13, 2009 10:49 AM
To: tinwhiskers@xxxxxxxxxxxxx; DENNIS.D.FRITZ@xxxxxxxx
Subject: [tinwhiskers] Re: Bourns announces hot dipping of tin - comments?

 

It is a minimum of 3% Pb not exactly 3% Pb.
This whole Pb-ban is so silly [or would be if it were not so sad].
In the name of being 'green', we now use more energy [so much for
sustainability], more vapor phase soldering [so much for being
eco-friendly], throw more things in the garbage [more environmental
friendliness not to say anythingabout inconvenience, economic loss and
reduced safety], retrofit Pb-free components with Pb [ wouldn't it be better
and easier making them with SnPb solder in the first place], 
With all these 'green' friends [who do not know what the hell they are
doing], who needs eco-enemies.

Werner

 

 

-----Original Message-----
From: Fritz, Dennis D. <DENNIS.D.FRITZ@xxxxxxxx>
To: tinwhiskers@xxxxxxxxxxxxx
Sent: Fri, 13 Feb 2009 10:55 am
Subject: [tinwhiskers] Bourns announces hot dipping of tin - comments?

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




















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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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