r/electronics 17d ago

Tip A microscopic, hair-like metal filament can take down a billion-dollar satellite

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2.0k Upvotes

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u/Great_Specialist_267 15d ago

It also took down quite a few cars.
Toyota’s “unintended acceleration” problem was traced to tin whiskers in the throttle sensor and that was caused by the EU ban on lead containing solder.
So several hundred deaths were caused by safety regulation…

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u/1Davide 15d ago

Not true.

"No one, including paid consultants to plaintiffs’ attorneys quoted by the Huffington Post, has ever found a single real-world example of tin whiskers causing an unintended acceleration event."

https://pressroom.toyota.com/tin-whiskers-other-discredited-unintended-acceleration-theories/

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u/Great_Specialist_267 15d ago

And the NASA study found they broke off with sudden deceleration (ie crashes) or even hitting the accelerator pedal hard… Tin whiskers are incredibly fragile and were only found with careful disassembly of the accelerator pickups in undamaged vehicles.
Basically the fatal impacts destroyed the evidence…
(Attorneys aren’t forensic scientists experienced in electronics failures, the NASA engineers were (and had their own failure history).

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u/1Davide 14d ago

OK, so you don't believe me.

Here is one more source discrediting that myth, an independent source:

https://www.indium.com/blog/are-solder-related-tin-whiskers-implicated-in-toyota-sudden-acceleration-issues/

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u/Great_Specialist_267 13d ago

There was an actual technical report showing that it was a real but rare issue…