Where to buy dual row locking connector? - Page 1
Forum section: electronics / projects

author: rcbuck
author_rank: Frequent Contributor
timestamp: December 12, 2020, 08:15:40 pm
content: I need a dual row 24 pin (2 x 12) locking connector similar to the Molex 70553 series with 2.54mm pitch. The 70553 is a single row connector. I can't seem to find anything on Mouser or Digikey. It needs to be right angle PCB mountable in through hole style. It also has to be available from a reliable U.S. distributor.I'm sure someone makes this but so far I haven't found it.

author: langwadt
author_rank: Super Contributor
timestamp: December 12, 2020, 08:23:50 pm
content: would nano-fit do? it is 2.50mm pitch

author: ElectronRob
author_rank: Contributor
timestamp: December 12, 2020, 08:56:19 pm
content: Have you had a look through the Samtec website? They are my new favorite connector company and sell direct and give free samples.There is also the Molex Mini-fit-jnr rangehttps://www.digikey.co.uk/en/product-highlight/m/molex/mini-fit-jr-connectors?utm_adgroup=&utm_source=google&utm_medium=cpc&utm_campaign=Dynamic%20Search_EN_Product&utm_term=&productid=&gclid=Cj0KCQiA8dH-BRD_ARIsAC24umYhlaEkxSMyS-fAjM0VQyOiIO-S-LsIFLybwdPadokPTBr10AxY4-MaArjZEALw_wcBWhich certainly comes as double rowand also TE Connectivity Micro Mate-N-Lokhttps://www.te.com/global-en/products/connectors/rectangular-connectors/intersection/3mm-low-profile-micro-mate-n-lok-connectors.html?tab=pgp-storyI use the molex and TE options frequently, the pins are ok to solder if you are only doing a couple but multiple crimp tools work fine on them too. I think the micro mate-n-lok is 3mm pitch if that works? Both are available as RA, PCM mount, cable mount etc, lots of options and well stocked by digikey/Newark.

author: rcbuck
author_rank: Frequent Contributor
timestamp: December 12, 2020, 09:32:42 pm
content: Nano-fit only goes up to 16 circuits. I checked the Mini-fit-jnr and the TE links but found nothing. I don't know why Molex calls it Minipfit-jnr. Those connectors are huge.I can use anything with a pitch between 2.00 and 2.54 mm but nothing larger.

author: tooki
author_rank: Super Contributor
timestamp: December 13, 2020, 03:30:13 pm
content: Quote from: rcbuck on December 12, 2020, 08:15:40 pmNo offense, but if you couldn't findanythingon Digikey, then you really need to improve your search skills.Navigate to: Connectors, Interconnects > Rectangular connectors — headers, male pinsSelect:pitch: 2.0-2.54mmrows: 2positions: 24mounting type: right-angle through-holefastening type: everything with "latch"Shows 22 items in stock.Quote from: rcbuck on December 12, 2020, 09:32:42 pmBecause they're smaller than what came before them, and they've been around for a long time. In case you haven't noticed, electronics has been undergoing ongoing miniaturization throughout its century+ of existence, but things get named when they're invented, not based on things that have yet to come.

author: rcbuck
author_rank: Frequent Contributor
timestamp: December 13, 2020, 08:34:48 pm
content: QuoteYou may be right.Using your search method I have decided to use the Molex C-GridIII part 90130-3124.

author: tooki
author_rank: Super Contributor
timestamp: December 13, 2020, 10:08:52 pm
content: Quote from: rcbuck on December 13, 2020, 08:34:48 pmHonestly, it takes some practice.Quote from: rcbuck on December 13, 2020, 08:34:48 pmDespite it being categorized as "latch holder", I don't think C-Grid is actually latched, I think it's just got locking ramps (i.e. a type of friction/detent fit). :/Take a look at Molex i-Grid and Microclasp, JST* PAD and PUD, Hirose SignalBee, etc. (If a tight detent fit is OK, look at JST PHD.)*I like JST connectors because you can get a name brand product at very aggressive prices. Their own web shop has fantastic pricing, and of course carries the full selection of products, which distributors don't necessarily.

author: rcbuck
author_rank: Frequent Contributor
timestamp: December 14, 2020, 03:11:46 am
content: tooki, thanks for the heads up about the latch. I will look at the ones you suggested. The customer is insisting on a latch so unfortunately I don't have a choice.

author: tooki
author_rank: Super Contributor
timestamp: December 14, 2020, 03:23:46 am
content: Quote from: rcbuck on December 14, 2020, 03:11:46 amIt's not a bad thing to require, really! Luckily there are plenty of options.

author: exmadscientist
author_rank: Frequent Contributor
timestamp: December 14, 2020, 05:58:46 am
content: Molex Micro-Fit 3.0 is excellent and if you have room for it, you will not regret choosing it. This is my go-to "power" connector.Molex CLIK-Mate is much smaller and also good... just not as good. This is my go-to "signal" connector.Molex Micro-Lock Plus is new and I haven't tried it, but it looks promising.All have excellent locking features and go to 24 circuits.

author: rcbuck
author_rank: Frequent Contributor
timestamp: December 14, 2020, 06:19:36 am
content: Thanks guys. I will keep looking. The connector doesn't need to handle any power. All signals in and out are at CMOS or TTL signal levels.

author: tooki
author_rank: Super Contributor
timestamp: December 14, 2020, 06:20:39 pm
content: Quote from: exmadscientist on December 14, 2020, 05:58:46 amWhile it’s cool that you wanted to help, did you not look at any of the requirements beyond “locking” and “24-pin”? The thread goes into more detail, and none of those meet the basic stated requirements.