General > General Technical Chat
(Defacto) standard DC barrel connectors
SiliconWizard:
Yes to the above, 5.5/2.1 is very common, and yes obviously it could be any voltage. That's even the whole point of these connectors, flexibility.
As madires pointed out, one important thing is to match the length both for the connector and plug. Nothing more unpleasant (both looks, reliability and even susceptibility to ESD) than a male plug that's too long for the receptacle and has a significant part of it exposed when plugged. A properly matched plug should not show any metal part when plugged in.
As to using USB-C instead, your call. May look appealing at first, but it's a whole other rabbit hole in its own right.
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