Here’s What’s Inside an SD Card
This evening I was sorting through my Flash storage collection, trying to find a spare microSD card for a project. While digging through a pocket of my travel bag I found an SD card that was lying loose in the pocket. By the time I found it it was dead. (This is a lesson in why you should use the cases that come with the cards.)
After failing to recover the data, I popped the card out of my laptop and noticed it was coming apart. I’m never one to leave something half destroyed, so I pried open the card and looked inside. This is what I found.
This card was made by Sandisk, and it turns out that much of it was filler. All 4GB of storage fit into the black circuit board on the left and it took up less than half the space of the card. I hadn’t realized it would be that small.
Pretty cool, huh?