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

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kk6gm
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Posted by kk6gm: Fri. Jul 29, 2011 - 01:03 AM
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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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Learning and Information, General Electronics
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valusoft
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Posted by valusoft: Fri. Jul 29, 2011 - 01:39 AM
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2.1 mm is my experience/vote.

Cheers,

Ross

Ross McKenzie, Melbourne Australia

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Graynomad
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Posted by Graynomad: Fri. Jul 29, 2011 - 03:31 AM
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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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frankvh
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Posted by frankvh: Fri. Jul 29, 2011 - 03:44 AM
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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.

http://www.frankvh.com

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kk6gm
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Posted by kk6gm: Fri. Jul 29, 2011 - 01:59 PM
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OK, thanks all for the confirmation. 2.1mm it is.

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donblake
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Posted by donblake: Fri. Jul 29, 2011 - 02:25 PM
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I always use 2.1mm but I keep several of these adapters on hand.

Don

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Tobias Claren
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Posted by Tobias Claren: Wed. Apr 1, 2020 - 02:49 PM
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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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Bronze Markawneil
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Posted by awneil: Wed. Apr 1, 2020 - 02:54 PM
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In my experience, it's always the one you don't have to hand!

 

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