More common 5.5mm power plug - 2.1mm or 2.5mm center?

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Based on your experience, what is the more common 5.5mm power plug found on various wall warts - 2.1mm center or 2.5mm center? I'm designing a board that can take a wide range of voltage and I want to make it as generic as I can, with regard to warts the user may already have or warts we supply.

My sense is that 2.1mm is more common, but that's just one data point.

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2.1 mm is my experience/vote.

Cheers,

Ross

Ross McKenzie ValuSoft Melbourne Australia

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FWIW Arduino uses 2.1mm.

______
Rob

Scattered showers my arse -- Noah, 2348BC.
Rob Gray, old fart, nature photographer, embedded hardware/software designer, and serial motorhome builder, www.robgray.com

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2.1 mm for sure. I had a product where I originally used the 2.5mm, but later switched it over to 2.1 mm for that same reason.

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OK, thanks all for the confirmation. 2.1mm it is.

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I always use 2.1mm but I keep several of these adapters on hand.

Don

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Hello.

 

I read 2.5mm is compatible with 2.1mm (because of the metal spring inside). Is that correct? Is this always right?

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In my experience, it's always the one you don't have to hand!

 

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