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d-sub connectors and current carrying capacity

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nuckolls.bob(at)aeroelect
Guest

Posted: Tue Sep 15, 2009 9:23 pm Post subject: d-sub connectors and current carrying capacity

At 11:26 PM 9/15/2009, you wrote:

  	  Quote: 	
		  Are there quality differences between different brands of d-sub connectors that I should worry about?  I purchased a couple of d-sub 9 pin solder cup connectors made by Pan Pacific at a local electronics supplier:



  http://www.jasonbeaver.com/rv7/rv7pictures/Scaled/20090915/CIMG0524.JPG 



 Would these be acceptable or would any of you recommend a certain brand and supplier? 	


   Solder cup and b-crimp connectors come in a huge

   variety of qualities. This is why I like to use

   the machined d-sub pins . . . ALWAYS good electrical

   connection. They also pretty much fit the whole

   range of removable pin d-subs. 



 

  	  Quote: 	
		  Also, what is the rated current capacity per pin?  I'm considering using these to hook up a Dynon RV-7 autopilot servo (to make disconnection easy if I ever need to).  Is this acceptable or would any of you recommend another way to hook the servo up? 	


   The d-sub with machined pins is my preferred connector.

   20AWG wire in any one pin is good for 7A or so. I like

   to keep it below 5A for a few wires, and 3A average for

   a connector full of wires.



   It's almost a certainty that the machined pin d-sub will

   work just fine for the application you proposed.



 

        Bob . . .



         ---------------------------------------

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

         ---------------------------------------



     [quote][b]

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nuckolls.bob(at)aeroelect
Guest

Posted: Wed Sep 16, 2009 5:09 am Post subject: d-sub connectors and current carrying capacity

At 06:54 AM 9/16/2009, you wrote:

 	  Quote: 	
		  I have had rotten luck with the Radio Shack metalized D-sub 

shells.  They fall apart quite easily.



But, why should that be surprising?



Sam


	


   The ones with removable crimp pins?

        Bob . . .



         ---------------------------------------

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

         ---------------------------------------

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nuckolls.bob(at)aeroelect
Guest

Posted: Wed Sep 16, 2009 6:11 am Post subject: d-sub connectors and current carrying capacity

At 08:31 AM 9/16/2009, you wrote:

 	  Quote: 	
		  Yes, but it doesn't involve the connector or pins.  Almost every RS 

plastic metalized hood has fallen apart.  It cracks at the screw bosses.



Sam


	


   Aha! I guess I've never used those. Good data point.

   We get nearly all of our plastic hoods from Marlin

   P Jones . . .



http://www.mpja.com/prodinfo.asp?number 859+PL



   The metalization of plastic hoods serves no useful

   purpose. If there is compelling need to encase the

   connector-to-connector wire bundles in a metallic

   enclosure, then processes MUCH more complex than

   adding a metallic coating to the connector shells

   is indicated!



   Bob . . .

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jason(at)jasonbeaver.com
Guest

Posted: Wed Sep 16, 2009 8:11 am Post subject: d-sub connectors and current carrying capacity

On Sep 15, 2009, at 10:21 PM, Robert L. Nuckolls, III wrote:

 	  Quote: 	
		   At 11:26 PM 9/15/2009, you wrote:

  	  Quote: 	
		  Are there quality differences between different brands of d-sub connectors that I should worry about?  I purchased a couple of d-sub 9 pin solder cup connectors made by Pan Pacific at a local electronics supplier:



  http://www.jasonbeaver.com/rv7/rv7pictures/Scaled/20090915/CIMG0524.JPG 



 Would these be acceptable or would any of you recommend a certain brand and supplier? 	


   Solder cup and b-crimp connectors come in a huge

   variety of qualities. This is why I like to use

   the machined d-sub pins . . . ALWAYS good electrical

   connection. They also pretty much fit the whole

   range of removable pin d-subs. 



	




I've only seen the machined d-sub pins with crimp connectors (like on the B&C website).  I'm fine using those, but several articles on your site show d-sub connectors with solder cups.  I assume those can be found with machined pins, but B&C doesn't carry them.  Do you know where I can get these?



 	  Quote: 	
		   	  Quote: 	
		  Also, what is the rated current capacity per pin?  I'm considering using these to hook up a Dynon RV-7 autopilot servo (to make disconnection easy if I ever need to).  Is this acceptable or would any of you recommend another way to hook the servo up? 	


   The d-sub with machined pins is my preferred connector.

   20AWG wire in any one pin is good for 7A or so. I like

   to keep it below 5A for a few wires, and 3A average for

   a connector full of wires.



   It's almost a certainty that the machined pin d-sub will

   work just fine for the application you proposed.



	




Thanks for your help!

jason

 	  Quote: 	
		   

        Bob . . .



         ---------------------------------------

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

         ---------------------------------------



  	  Quote: 	
		  



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 [quote][b]

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