Name Of Wall Wart Connector - Page 1
Forum section: electronics / projects

author: bostonman
author_rank: Super Contributor
timestamp: June 25, 2023, 01:37:58 am
content: I want to use a Wall Wart to power something, but the DC plug doesn’t fit. I’d like to replace it, but can’t figure out what the plug is called when I search on DigiKey.I measure 5.5mm outside, 2.4mm inside, and 11mm long. It needs to handle 12v and about 1.5A (the wall wart is a regulated 12v, 3A).

author: bostonman
author_rank: Super Contributor
timestamp: June 25, 2023, 01:55:34 am
content: I should add that I (think) this is the typical DC round connector with the outside being ground.

author: The_Parp
author_rank: Contributor
timestamp: June 25, 2023, 02:04:43 am
content: I searched dc power conector 12Vdc rating on mouseris that it?https://www.mouser.ca/c/connectors/power-connectors/dc-power-connectors/?voltage%20rating=12%20VDC

author: themadhippy
author_rank: Super Contributor
timestamp: June 25, 2023, 02:07:07 am
content: DC barrel connector ?

author: bostonman
author_rank: Super Contributor
timestamp: June 25, 2023, 02:14:19 am
content: The Mouser one is exactly it, except I need the plug (male).I searched for DC Connector on DigiKey and didn’t come across these.

author: The_Parp
author_rank: Contributor
timestamp: June 25, 2023, 02:29:22 am
content: https://www.digikey.ca/en/products/filter/barrel-connectors/power-connectors/435?s=N4IgTCBcDaICYGMAEAHALwdwKYCckIHsA7IrBAFwLwEYwA3REAXQF8g

author: bostonman
author_rank: Super Contributor
timestamp: June 25, 2023, 02:34:57 am
content: Excellent, thanks!

author: tooki
author_rank: Super Contributor
timestamp: June 25, 2023, 09:47:01 am
content: Quote from: The_Parp on June 25, 2023, 02:04:43 amThe plug dimensions and voltage are unrelated. That’s a stupid thing to search for, sorry.*The Japanese DC barrel plug system is an exception, in that it does specify a specific connector size for different voltage ranges. But the 5.5/2.5mm barrel jack the OP needs is not part of the Japanese standard.

author: tooki
author_rank: Super Contributor
timestamp: June 25, 2023, 09:55:11 am
content: Quote from: bostonman on June 25, 2023, 01:37:58 amChances are your wall wart plug is designed for 5.5/2.1mm jacks, but the device has a 5.5/2.5mm jack — the center pin is juuust a tad too big. (5.5/2.5mm is often used for higher currents than the 5.5/2.1mm.)They’re generically called “DC barrel plugs and jacks”, by the way, but the various distributors call them different things.Here’s a more useful link. Look at the category and the filter criteria I used; that’ll give you an idea of how to find things. (It’s usually much better to drill down with a parametric search than to use a text search.)https://www.digikey.com/short/tjq0bz2f

author: bostonman
author_rank: Super Contributor
timestamp: June 25, 2023, 01:46:33 pm
content: QuoteSo you're saying my OD of 5.5mm is correct, but most likely the ID is 2.4mm and not 2.5mm?Edit: sorry, I messed up. 2.5mm is what mine most likely is.You're probably correct as trying to measure the ID is tricky. I haven't dug deep yet into filtering results, but initially I was hoping the sizes would vary enough that it would be obvious whether I have a 2.4, 2.5, or a 2.6, but looks like all three sizes are available.

author: magic
author_rank: Super Contributor
timestamp: June 25, 2023, 01:59:44 pm
content: 5.5/2.1 and 5.5/2.5 are the common sizes seen on virtually all equipment (with 5.5 barrel diameter - there are others).

author: bostonman
author_rank: Super Contributor
timestamp: June 25, 2023, 02:20:54 pm
content: This was a big help, thanks.Initially I wanted to ask if common sizes exist, but forgot. Now I know 2.5mm is probably the correct size. To give myself a bit of credit, I didn't do too bad measuring 2.4mm (and this wasn't with digital calipers either).

author: tooki
author_rank: Super Contributor
timestamp: June 25, 2023, 04:43:34 pm
content: Quote from: bostonman on June 25, 2023, 01:46:33 pmDC barrel jacks are designed to have some play. 2.1mm or 2.5mm are the dimensions of the center pin, not of the bore in the plug. So a plug for the 2.1mm pin will be a bit larger than 2.1mm (but smaller than 2.5mm so you can’t mate them), and one for a 2.5mm pin will be a bit larger than 2.5mm.A 2.4mm bore would be within the expected range for a plug intended for a 2.1mm pin. The fact that it won’t fit is a strong indicator that the jack in your device has a 2.5mm pin.

author: bostonman
author_rank: Super Contributor
timestamp: June 26, 2023, 02:34:54 am
content: Thanks for all the help.I ordered these:https://www.digikey.com/en/products/detail/tensility-international-corp/55-00050/8626991

author: The_Parp
author_rank: Contributor
timestamp: June 27, 2023, 04:31:28 am
content: Quote from: tooki on June 25, 2023, 09:47:01 amUnprecise, unexperienced, not helping at worst... But stupid? Really?I learned a lot. You really know a lot about DC jacks. Im originally French speaking so search terms are sometimes a pain for me.

author: bostonman
author_rank: Super Contributor
timestamp: July 02, 2023, 11:23:14 pm
content: I assembled the connector today and it was a snug fit.Seems like the perfect size.Thanks for the assistance.