12 Pieces 5.5mmx2.1mm 2 Pins DC Power Jack Female Panel Mounting Connector Socket

Easy to install. Works great for the project I’m doing.

Good low voltage connection.

Work great, be careful to test the polarity. I assumed the long metal end with the small stamped number was the same polarity on all of these. It is not so don't fry your project

These are reasonably well made panel mount DC input jacks. They will fit into a panel up to 3mm thick. The dimensions provided by the seller are accurate so planning the correct hole size is easy. As other reviewers have mentioned a 5.5x2.1mm plug fits a little tighter than I'm used to but makes very good electrical contact. I'm OK with it.The inside depth of the jack is 9mm so it's best to choose a plug with a barrel around 10mm in length if you don't like the plug barrel hanging out. A lot of the 5.5x2.1mm plugs on Amazon have a 13.5mm barrel which leaves around 4.5mm of the barrel exposed when fully seated. That doesn't bother me because I bought these for enclosures that don't have a lot of space.I had no problem getting the lugs to accept Kester 44 solder using a Hakko FX888D soldering station set at 400 DegC (750 DegF). Between 1 and 1.5 seconds was all it took. There was no discoloration or deformation of the plastic after soldering. The center conductor terminal remained tight.The plastic body feels very solid to me. I was careful not to overtighten the supplied hex nut and got a good firm fit. A lock washer would have been nice to have even if it reduced the maximum panel thickness a little.I was disappointed that one of the jacks I received was broken due to a manufacturing defect (see photos). But it wasn't worth returning the entire shipment for one jack. There were still plenty enough to work with. Just be sure to factor that in if you are working on a project requiring a lot of DC input jacks.Overall these are good parts at a great price. They aren't built to the standards of a name brand part. They are built for value.

No issues with soldiering the connections. Power adapter fits as expected and holds reasonable well. I'm guessing the problem area will be the nut that holds the connector in place. I haven't had any issues, but if it's a permanent application I'd definitely recommend adhesive. A "removable" connection needs to be in a place where the nut can be reached and tightened occasionally.

These Female DC Power Jacks are just right for adding external power to guitar effects pedals. I like the fact that they are isolated electrically from the effect's metal housing, so there are no issues with polarity from the incoming power source. This 12 pc package is a good deal too!

Picked these female panel mount connectors due to their small size, but sadly all the dimensions are a bit bigger than the diagram indicates. Specifically the front diameter of the jack (the part in front of the panel) is really 10.3mm and the required hole isn't 6.5mm but closer to 8mm as it's really an M8 male threaded part and the thickest part is 7.9mm diameter.Going to have to redesign the 3D printed part so this will really fit and not 100% sure I'll still be able to use this connector anymore as it may be too large for my needs.Overall, the quality seems pretty good so if the slightly larger size meets your needs then I see no reason not to give these ago.

I needed some fairly shallow jacks for a project in a small project box and these do the job. The only thing I don't like is the center pin isn't the split type but rather a solid pin so plugs with slightly wider center holes won't work well with them, you have to find plugs that are the right fit. But for the money they're OK.