There's a lot more scarier faults on many makes of vehicles if you look
at the recall database:

http://www.dft.gov.uk/vosa/apps/recalls/default.asp


How about this one:

CADILLAC	CORVETTE	possibility that the steering wheel can
lock whilst the vehicle is in motion


.......... hmmmm I know which I'd prefer


-----Original Message-----
From: Leadfree [mailto:[log in to unmask]] On Behalf Of Bob Landman
Sent: 01 February 2010 15:33
To: [log in to unmask]
Subject: Re: [LF] Perfect opportunity for tin whiskers induced failures
- Toyota did not install brake override systems despite complaints

When the body count rises.

It's just a question of time.

Experiments done recently at CALCE and elsewhere show it's possible to  
grow whiskers in weeks, not years.

The stress and heat/humidity in autos is ideal for creating problems  
with lead-free assemblies.

Unless the laws of physics have been repealed, failures will occur.

Determining the cause may take a long time (years) because car dealers  
will do repairs by swapping out modules.  I doubt they will keep the  
bad parts or send them to the mfg for analysis.  Unless the failure  
rate spikes up significantly, or there are fatalities, as we have  
learned from this incident with Toyota, nothing will be done.

That is why Ron Lasky's pronouncement that lead-free is ok (as it's  
been 3 years since RoHS and we know of no failures is a falacious  
argument.

Just look at the history of tin whiskers going back to the 1940s.   
Each generation of engineers needs to learn the hard way.

Bob Landman
H&L Instruments,LLC

Sent from my iPhone

On Feb 1, 2010, at 9:50 AM, "Pete Houwen"<[log in to unmask]>  
wrote:

> I have not yet seen any legitimate connection made between Toyota's
> problem and Tin Whiskers.  But I have heard people comment about  
> it.  In one
> anecdote I see as a good sign, an aquaintance, who has no background  
> in
> electronics and isn't highly aware of mine, brought it up. Agood  
> sign in that
> the folly of lead free is becoming known to the general public.   
> When does the
> backlash start?
>
>

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