Author Topic: Alternative to std Molex for Discrete Wire to PCB in high vibration setting?  (Read 2146 times)

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Offline SpereTopic starter

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Looking for suggestions to the standard molex connectors for use in higher vibration environment.

Application Notes:
Location: In vehicle passenger compartment, inside housing - dust/moisture/etc. contamination not an issue
Specific Usage: Connecting housing mounted LCD to PCB & user input switches to PCB.
Max 20 volts (normally a typical 14.6-14.8 )
Max 100 mA per pin (generally much less)
Will be using several variants from 2 to 8 pin.

I've used the standard Molex connectors with pretty good success in the past, but want something with a more positive (anti-vibration) connection and would appreciate real world experiences.

Reason: I have had the molex pairs separate in the past after prolonged vibration -- it's annoying...

Will likely be purchasing from DigiKey with other parts.

Items previously used:
http://www.digikey.com/product-detail/en/22011052/WM9143-ND
http://www.digikey.com/product-detail/en/0022041051/WM18788-ND/403318

Thanks!
« Last Edit: May 08, 2015, 08:08:19 am by Spere »
 

Offline m98

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The Hirose DF13 seem to work reliable in model airplanes, but I don't have any experience with them.
« Last Edit: May 08, 2015, 08:03:54 pm by m98 »
 

Online Monkeh

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JST PH are pretty secure IME, and the PND series has a lock on it. Digikey keep both.

Also PA, PLI, PNI..
« Last Edit: May 08, 2015, 05:02:46 pm by Monkeh »
 

Offline luky315

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Samtec is expensive, but reliable.
https://www.samtec.com/picturesearch/
I used their 1,27mm "Tiger Eye" contacts in similar applications.
 

Offline calexanian

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    • Alex-Tronix
I would have recomended Panduit MASCON connectors like we use in production, however the company has become difficult to work with as of late. I would recommend the TE brans MTA series of connectors. They come in a .100 and .156 series. We use both and have had good luck. They are every bit as good as the Panduit product and light years ahead of the old style molex connectors. The male headers come available in a locking polarized version as well. The wire gauge for the female side is indicated by the color of the body. Red for 22ag, etc.. Also you will need the T handle to properly set the wires. They also have a pistol grip gun available in the various sizes. They are a bit expensive, but if you are going into production you will want one. For small quantities the T handle is fine.

http://www.digikey.com/product-detail/en/3-640428-5/A31231-ND/696811
Charles Alexanian
Alex-Tronix Control Systems
 


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