When selecting DC connector plugs and sockets how do you make sure they match?

Test Electrix · 28th August 2010, 07:45 PM

I'm trying to find a DC connector to supply a unit I'm going to make but I can't work out for sure which would match what, for instance would this socket fit with any of the connections on this plug? Any good guidelines to follow when selecting these separate parts?
Any help on this would be greatly appreciated cheers!

bob91343 · 28th August 2010, 10:03 PM

Get the advice of someone who sells these things. You can get polarized connectors that will go together only one way, which is a good thing. The selection of available connectors is so vast that it's rather easy to find something that won't fit anything else you have.

runebivrin · 29th August 2010, 05:22 AM

The short answer is they'll probably fit. The jack is 5.7mm outer diameter, 2mm pin diameter.

One of the plugs is 5mm outer, 2.1mm pin hole diameter.

According to the jack specs the plug should be 5.5 outer diameter but that is generally not a critical measurement as long as it isn't too large. It's generally the pin diameter that is critical.

Personally I'd avoid that type of plug for anything critical. There's too much risk for polarity screw-ups and the plug will pull loose very easily.

Test Electrix · 29th August 2010, 06:40 PM

Ah right cheers any other type of connections? I need something that's quite widely available really

28th August 2010, 07:45 PM	#1
Test Electrix diyAudio Member Join Date: Mar 2009	When selecting DC connector plugs and sockets how do you make sure they match? I'm trying to find a DC connector to supply a unit I'm going to make but I can't work out for sure which would match what, for instance would this socket fit with any of the connections on this plug? Any good guidelines to follow when selecting these separate parts? Any help on this would be greatly appreciated cheers!

29th August 2010, 05:22 AM	#3
runebivrin diyAudio Member Join Date: Jul 2003 Location: Huddinge, Sweden	The short answer is they'll probably fit. The jack is 5.7mm outer diameter, 2mm pin diameter. One of the plugs is 5mm outer, 2.1mm pin hole diameter. According to the jack specs the plug should be 5.5 outer diameter but that is generally not a critical measurement as long as it isn't too large. It's generally the pin diameter that is critical. Personally I'd avoid that type of plug for anything critical. There's too much risk for polarity screw-ups and the plug will pull loose very easily. __________________ Do wizards use spell checkers?

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28th August 2010, 10:03 PM	#2
bob91343 diyAudio Member Join Date: Mar 2010	Get the advice of someone who sells these things. You can get polarized connectors that will go together only one way, which is a good thing. The selection of available connectors is so vast that it's rather easy to find something that won't fit anything else you have.

29th August 2010, 06:40 PM	#4
Test Electrix diyAudio Member Join Date: Mar 2009	Ah right cheers any other type of connections? I need something that's quite widely available really

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