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Monday, November 11, 2013

How to Choose an SD card

You will find an SD card in your electronics such as cell phones, tablets, digital cameras and PDAs. Are there different types and styles of SD cards and how do you know the one you have is a good one? Let's go over this today.

Your SD card is a Secure Digital format flash memory card. 

There are different sizes and shapes of SD cards so be sure to choose the correct one for your technology.  The Standard SD cards come in three options: standard size, microSD and miniSD. The Standard size comes with a write-protect option on the side and is about the size of a postage stamp. The microSD is a bit smaller and the miniSD is the smallest.

The standard SD has a capacity of 2 GB so that may not be the best option for a digital camera, for example where you would be limited to just a few high quality pictures.  So they created the SDHC, or SD High Capacity, cards which have a storage capacity up to 32 GB. 

Then, in 2009, they realized they needed even more storage capability and came up with the SDXC, or SD Extended Capacity which have incredible storage capabilities of up to 2 terabytes.

The catch is that these higher capacity cards may not work in your older technology so be sure to check your documentation to be sure which cards will work. ☼

So how long will they last? Well, I have read that they can last a good 10 years sitting idle and can be written to and erased thousands of times but I would not consider using them for long-term storage. The good news is that they have even been washed, survived a bridge explosion, and even worked after a plane crash.  Bill Biggart's card even survived the collapse of the second tower on 9/11.

 

 

 

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