identify odd type of USB A male connector. - Page 1
Forum section: electronics / beginners

author: spikey1973
author_rank: Regular Contributor
timestamp: July 09, 2022, 05:28:32 pm
content: Hey to all,I am trying to replace a USB A male connector on my aliexpress bought FX35 Elektronische Load Tester.the current male connector has an odd pinout.it is mounted on both sides of the PCB.on one side 3 solderings: 2x the USB shield, ground, mechanical support, 1x actual pinout connection (and this one is the one that confuses me)on the other side the common pins 1-4 (VCC, D-, D+ Gnd)the plastic insulating part of the connector is green, usually the colour has a meaning, but green is unfamiliar to me,The interieur of the connector looks like a USB 3.0 A male. without the StdA_SSRX-(5).SSRX+(6),SSTX-(,SSTX+(9) pins. wich would leave the the remaining middle pin being ground (7).On the PCS there is no continuity between either pad(pin) 4 & 7, additionally there is no continuity between, the shield and (pad)pin 4 and 7.Neither on the connector, again no continuity between either pin 4 & 7, additionally there is no continuity between, the shield and pin 4 and 7 . for the connector this leaves no surprise to me just felt like the information should be added for completeness. I would have expected continuity between pad 7 and 4 on the PCB though.anyone any thoughts on how i should see the pinout.

author: spikey1973
author_rank: Regular Contributor
timestamp: July 13, 2022, 09:53:56 pm
content: Hey to all,89 views, but no response... doesn't have anyone a thought on the matter?kind regardsMatthieu

author: Doctorandus_P
author_rank: Super Contributor
timestamp: July 13, 2022, 10:10:08 pm
content: Nice mittens?

author: sleemanj
author_rank: Super Contributor
timestamp: July 13, 2022, 10:21:25 pm
content: Deleted my post with a link, on second look the internal was different. There seem to be a few 5 pin USB-A style connectors but so far they seem to have a different tongue design (with space on both sides of the tongue).

author: sleemanj
author_rank: Super Contributor
timestamp: July 13, 2022, 10:27:55 pm
content: Oh, wait, of course, are the pictures what you want to replace or is that the male plug which plugs into the socket you want to replace? In which case my link might have been correct in the first place (apart from the mounting style).Anyway, I just searched "USB A 5p" on 1688 (B2B website in China) and thee are a few (of course there are lots of 4P ones and such shown as well, just scroll through looking at the pictures), unfortunately none seem to have a clear view of the pin arrangement inside the connector but maybe if yu look through you might find some keywords that could help your search on more english-speaking websites.

author: thm_w
author_rank: Super Contributor
timestamp: July 13, 2022, 10:32:15 pm
content: Its probably just for additional mechanical stability when mounting on the side of the board like that. Put a normal connector and add some epoxy. Or chop off the end of an old cable and solder that on.https://ae01.alicdn.com/kf/He71ddbf967c34550966cbe24eeaf215a6.jpghttps://www.aliexpress.com/item/1005001629251673.html

author: sleemanj
author_rank: Super Contributor
timestamp: July 13, 2022, 10:46:48 pm
content: Ah, I see it's a male plug on a PCB, weird but in context makes sense.My guess is that the extra pin might be to do with OTG comms or some fast charger communication, but I'd also guess that it is unused.I'd also guess that this style of plug is probably usually used in molded cables, so is probably very hard to find outside of that, the socket on the other hand is probably a lot easier (and if you look at lcsc for example they have a number of sockets under USB Type A with 5 pins).Personally, if it were me, I'd remove the broken plug and replace it with a short wired (and suitably thick guage) 4 pin Type A pigtail and dispense with the hokey dangling surface mounted plug entirely.