Electronics > Projects, Designs, and Technical Stuff
Your Experience with Reliable Connections?
jfiresto:
--- Quote from: Alaezae on August 06, 2020, 03:24:27 am ---... I’ve tried using Molex connectors and they work okay, if you screw up the crimp though you’re boned....
--- End quote ---
Which ones? I asked Digi-Key to search for "Molex connector" and they returned over 137 thousand results.
TimFox:
With huge-range companies like Molex, I miss printed catalogs. Perhaps Molex' on-line catalog is easier to use than the DigiKey search engine.
tooki:
If only. It’s arguably worse. Molex’s website is a fooking mess. (Not as bad as TE’s, though.)
David Hess:
Crimp terminals for connectors need to include a strain relief section which crimps over the insulation like Molex connectors commonly have.
For very high current connections, I like to bolt ring terminals together.
Wendy_Preston:
Now, please don't blast me for mentioning our own company's connectors - but high-reliability is kind of our bread-and-butter. We supplied Datamate connectors to NASA for the Robonaut...
https://www.harwin.com/connectors-hardware/high-reliability-connectors/
On a more general basis, I'd say you need to consider at least the following features:
* Some sort of fixing between mated pairs. Jackscrews, screw-loks, bayonet locks, latching - something. This will prevent the vibrating apart. Depending on how often you need to disconnect the pair will help you with your choice of fixing feature and how quick or easy it is.
* Backpotting, cable hoods, heatshrink - some form of additional strain relief on the cables at the rear of the connector. This is one of the more vulnerable spots over long-term vibration. As elsewhere mentioned as well, make sure there is a bit of slack in the cable loom - but not too much that it's flapping around.
* On that note, consider cable management near the connection, like cable tying it to a fixed part so it vibrates with the rest of the build rather than against it.
Other solutions are available ;)
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