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Electronic Specs

PostPosted: Wed Jul 30, 2014 2:48 am
by Delta_V
Does anyone know where I can find mechanical acceleration/mechanical vibration/mechanical shock specs for electronic components? I've looked at many detailed spec sheets but none seem to cover sensitivity to mechanical acceleration, the exception being MEMS accelerometers and generic resistors. I just need a very rough guess as to mechanical acceleration tolerance limits for generic IC's so I can see if my electronics stand a chance during acceleration.


Re: Electronic Specs

PostPosted: Sat Aug 02, 2014 5:23 am
by lavalamp
I'd be surprised if they couldn't handle at least 100G, if not 1000G.

Re: Electronic Specs

PostPosted: Thu Aug 07, 2014 6:44 pm
by Delta_V
I figured as much, but then I read that apparently ordinary discrete resistors are damaged (as in their value changes permanently by more than 2%) from 0.1 seconds of 100 g acceleration. It's possible that IC's are more resilient, because of the much higher surface/volume ratio of the "components" on a slab of silicon (less inertia and higher stiffness), or that even slight change in the properties and values of the components from the acceleration wouldn't be any concern because circuits are designed to function with a certain tolerance level for the values. My main concern is the sensitivity of the crystal oscillator to accelerations, because a hundred ppm change in values would render it useless.

Anyways, I'm keeping acceleration at around 50 gs (for 20 seconds), but things would be easier if I dared to push it to 100 g's or more instead. I guess this post was more thinking out loud than anything, but if anyone else has any input on possible acceleration/shock tolerances for components I'ld appreciate it too.

Re: Electronic Specs

PostPosted: Tue Dec 30, 2014 12:09 am
by cpooley
Most ICs and MEMS devices can withstand very high accelerations.
Peculiar things like vibrational resonances could be explored with a homemade shaker table
that can shake from maybe 10 to 10,000 Hz and use strobing by led lighting to look for resonances

Re: Electronic Specs

PostPosted: Wed Dec 31, 2014 7:26 pm
by Delta_V
Thank you, very useful.

I've been considering a shaker table, but I really only require peak survivable acceleration.