[eagle] Re: CAN-Do-Too! ??????????

Louis McFadin w5did at amsat.org
Mon Jul 16 18:10:05 PDT 2007


Chuck,
Mouser has a very large selection of D-sub connectors including the  
high density versions. Most are in stock.
I see no inherent reason for not using them.

Lou McFadin
W5DID
w5did at mac.com


On Jul 16, 2007, at 7:19 PM, Chuck Green wrote:

> I have had one experience with the high density D connectors.  They  
> were much larger pin count than 9 or 15!  After someone absolutely  
> insisted that we use them I did the board lay out.  Turned out that  
> they were *totally* unavailable!!!  I did the board layout again@#$% 
> &^* using standard Sub-D's.  That was a number of years ago so I  
> would hope things have changed.  If someone is absolutely confident  
> they can obtain the parts we need then I'm not at all opposed to  
> using them (remember, I'm not volunteering to do parts procurement  
> for this project; this is a good time to use someone that's good at  
> parts procurement).
>
> While at Goddard for P3D vib test I noticed NASA satellites using  
> standard Sub-D's.  That was also a few years ago.  Anyone know of  
> High Density Sub-D's being used on other satellites?
>
> Chuck
>
> Bdale Garbee wrote:
>> On Tue, 2007-07-10 at 09:02 -0700, Chuck Green wrote:
>>
>>
>>> The sub-miniature D connector series has served us well.  If  
>>> anyone has *experience* with something they think might be a  
>>> better choice, we'd love to hear about it.
>>>
>>
>> At the AMSAT annual meeting that was held near Washington, D.C., a
>> couple of years ago (three?), someone approached me after the CAN-Do!
>> talk that Stephen and I gave to ask why we weren't using the
>> higher-density connectors that put 15 pins in the same shell size  
>> as the
>> 9-pin version of the series we have been using... and followed up by
>> sending me what looked like mil/aero-spec samples of such a part  
>> that I
>> probably still have in my basement somewhere.  I'm sorry that I can't
>> recall at all who that person was, but it was someone who claimed  
>> to be
>> using such connectors professionally with good results.
>>
>> At the time, we weren't likely to be redesigning the units any time
>> soon, so I didn't take any action on this suggestion.  If we're  
>> going to
>> revisit the design and think we need more than 9 pins, it might be  
>> worth
>> investigating higher density connectors like that?
>>
>> Bdale
>>
>>
>>

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