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Why Didn’t Magnets Ruin SD Cards?

Wednesday, July 22nd, 2015 by | Filed Under: I've Always Wanted To Know..., Quick Tips
 
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Keith has a question about SD cards and magnets.   “Here is something for your newsletter staff to look into. My friend carries several SD cards in a little case in his pocket and he has a name badge with three very powerful magnets on it. So strong I found it once and put it on the ‘fridge and couldn’t get it off without sliding it up to the top! He put the magnets in his pocket along with the SD cards. I thought his card data was gone but he tried the cards and everything was fine! What’s up with that?”

sdcard1

While it’s true that strong magnets can damage storage devices, it takes a pretty powerful magnet to wipes one, especially a modern device. While a magnet that holds a badge securely to a fridge seems strong, in the scheme of magnet strength, it’s not really all that powerful. It’s unlikely that anything you’d find in the home would damage an SD card unless you’re into some hefty science experiments.

What’s more likely to hurt your SD care is damaging the housing, so that protective case is a good idea.

~ Cynthia

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