Electronics > Projects, Designs, and Technical Stuff
Evolution of usb connector?
wraper:
--- Quote from: westfw on December 19, 2018, 03:34:21 am ---
--- Quote ---Micro USB connectors just don't break.
--- End quote ---
That statement does not match my personal experience. They may resist breakage in exactly the ways that they were intended to resist breakage, but other "system-level" issues seem to come up that have been the death of several (otherwise undamaged) products I've owned. Including some expensive cell phones. The cables break even more frequently, too (apparently usually due to shoddy strain relief, fine wires, and poor soldering/assembly technique.)
--- End quote ---
Don't forget those connectors and cables experience daily use and abuse which usually does not happen with full size connectors. There are not that many devices which you drop or pull with cable plugged in. USB-A connectors in laptops get damaged just as well, likely even more often.
--- Quote ---Unfortunately, the "no through-hole" versions are by far the most common, and in between the lack of TH, the smaller overall area of the pads, and the thinner PCBs, the "break off of PCB" failure mode is very common :-(
--- End quote ---
I repaired thousands of phones in the past. Non TH connectors were used a lot by Nokia. Later they started using mostly connectors with TH pins in symbian smartphones. Those were extremely reliable. I no longer repair phones as my daily job, but phones which I occasionally repaired in the last 5 years used SMT+TH connectors.
stratcat:
USB ports are proof that there are 4 dimensions - try to plug, won't go.
Turn it over, won't go. :wtf:
Turn it over again, Success! :)
:rant: :rant: :rant:
james_s:
The micro connectors are ok for phones, because phones are small and light and generally do not exert a great deal of force on the cable. Put a micro USB connector on the back of a 15 pound laser printer and then trip over the cord and I bet it snaps off the plug, rips the connector off the PCB or both. Try the same with a fullsized USB connector and there's a pretty good chance it will spin the printer around and yank the plug out of the socket without damage.
The micro and mini connectors are small out of necessity because they're used on small devices, they aren't used on bulky heavy peripherals because they're not as sturdy.
Mr. Scram:
--- Quote from: coppercone2 on December 18, 2018, 01:09:21 pm ---you should post this in other peoples threads repeatedly
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Thanks for the advice, but I don't think proper forum form is really your area of expertise. It'd still be good to know what you did to investigate this yourself. What did you find about the history of USB? There's probably a lot of interesting stories you've found you could tell us. Don't tell us you didn't investigate?
coppercone2:
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