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

  • From: "John Burke" <john@xxxxxxxxxxx>
  • To: <tinwhiskers@xxxxxxxxxxxxx>
  • Date: Fri, 13 Feb 2009 09:13:24 -0800

Someone banned the Gas chips?......8-)

 

John Burke

(408) 515 4992

 

  _____  

From: tinwhiskers-bounce@xxxxxxxxxxxxx
[mailto:tinwhiskers-bounce@xxxxxxxxxxxxx] On Behalf Of Patrick Bruneel
Sent: Friday, February 13, 2009 9:11 AM
To: tinwhiskers@xxxxxxxxxxxxx
Subject: [tinwhiskers] Re: Bourns announces hot dipping of tin - comments?

 

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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