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Electronics & Test

Tin Whiskers Again Cited as Potential Problem for Toyotas

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chrisreed
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Bronze
Re: Tin Whiskers and Stop Switches and Toy Otas
chrisreed   12/20/2012 6:20:21 AM
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The crisis trunk escape lever on some Lexus models is cheap plastic, claims Consumer Reports. This means that children, animals and possible feces pigeons stuck in Lexus trunks - should something of that nature ever occur - would have good trouble getting out via their own power. The right title car loans can help you out.

William K.
User Rank
Platinum
Tin Whiskers and Stop Switches and Toy Otas
William K.   9/2/2012 5:27:59 PM
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In the auto plants in the USA, and also in many other plants in the USA, the big domed red button, the same shape as the start/stop button, is reserved for the emergency stop function. The only other function that can be assigned to a big red button is "normal stop", if it is the sameas "emergency stop". A machine using that button for any start type of function would not be allowed in the plant, for good reason.

The part that bothers me the most about that is that somebody in our country approved it. What was that dummy thinking?

tekochip
User Rank
Platinum
Re: Tin Whisker Headaches
tekochip   9/2/2012 11:39:47 AM
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I agree, you need a real kill switch, not a switch that flags the processor, "pardon me, but when you have a spare microsecond could you please stop the car before I run into something."

William K.
User Rank
Platinum
Tin Whisker Headaches
William K.   8/29/2012 10:13:20 PM
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I would say that any company dumb enough to use one single button for both the start and stop functions is certainly dumb enough to not recognize a failure when it happens, and not recognize a tin whisker faiure at all.

ON the other hand, why was our own federal automotive safety watchdog so blind as to allow the sales of a vehicle that had no failure proof means of shutting off the engine? A vehicle that did not even have a single purpose engine off switch? Who was paid off to let such an intrinsicly unsafe system be sold in this country?

The correct response would have simply been NO, with no compromise and no delays and no concern for profits that they would not make. They could have made it a 2 position run-stop switch and probably lives would have been saved. If the stop position had been a true stop switch and not just a computer input signal.

Charles Murray
User Rank
Blogger
Re: Upside to the on-going debate
Charles Murray   8/8/2012 7:12:34 PM
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Good points on both counts, Chet Brewer. I agree that pedals in many vehicles are not well laid out for tall people with big feet. I would take it a step farther: Many tall people (6'-6" or taller) can't even fit into many of today's vehicles, let alone work the pedals. As for senators doing design work, I couldn't agree more.

Charles Murray
User Rank
Blogger
Re: More information
Charles Murray   8/8/2012 7:08:12 PM
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 I agree, tekochip. Seems to me that NHTSA did its homework.

averagejoe72677
User Rank
Gold
Re: Tin Whisker Headaches
averagejoe72677   8/7/2012 3:58:47 PM
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Unless the electronics industry has a secret planned obsolence policy (would not surprise me), and ROHLS was not intended for the electronics industry (as others stated) why hang on to a lemon policy of continuing to use lead free solder? 

wbswenberg
User Rank
Gold
Re: Tin Whisker Headaches
wbswenberg   8/7/2012 3:09:21 PM
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In aerospace tin plate wire is a nono except for test equipment.  I believe the wiskers will grow right through the insulation.  So much for coating.

jmiller
User Rank
Platinum
Re: Tin Whisker Headaches
jmiller   7/31/2012 8:46:08 PM
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Good question.  Also, why not have some duplicate feedback for some critical systems?

Rob Spiegel
User Rank
Blogger
Re: Bring lead back to electronics.
Rob Spiegel   7/31/2012 7:26:30 PM
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Thyat's right, Oldbikefixr. And many argue that the 3 percent lead in the tin will not leach out into ground water at landfills. 

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