Author Topic: 0.1" pitch PCB header options  (Read 1081 times)

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0.1" pitch PCB header options
« on: March 08, 2015, 01:12:37 pm »
Hi

I'm putting together a simple RIAA phono widget plus preamp from PCBs supplied by Rod Elliott. Between the power supply board, the phono thing and the preamp, there's quite a few 2, 3 and 5 hole 0.1" pitch connectors. I had thought of using screw connectors, but it'll be a tight squeeze, and I'm struggling to find a 5 hole one. Other thoughts are Molex headers and plugs or solder directly to the board (which could end up a proper cat's cradle).

Molex connectors for mV signals? Any thoughts about that or otherwise?

Thanks
John
 

Offline cosmicray

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Re: 0.1" pitch PCB header options
« Reply #1 on: March 08, 2015, 02:26:12 pm »
Even if you decide to use Molex type plugs (of which there are an extensive variety) be aware that the same style can be had in multiple contact finishes (tin, various thicknesses of gold, etc). Some of those are rather difficult to locate, so you may way to consider contact resistance in the selection.
it's only funny until someone gets hurt, then it's hilarious - R. Rabbit
 

Offline PeterFW

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Re: 0.1" pitch PCB header options
« Reply #2 on: March 08, 2015, 03:37:37 pm »
Molex connectors for mV signals? Any thoughts about that or otherwise?

I have seen so many of these connector over the years in all sort of audio related gear carrying everything from mic level to power:
http://www.zeenic.com/c64psu/T07.jpg

With contact surfaces from ranging from gold, silver, tin to various types i could not identify with certainty.
I have seen standard ribbon cable with your house hold crim press fit connector and so much more.
Yamaha, Allen&Heath, Denon, Pioneer, high end, low end...

What i am trying to say is, get a next best decent cable with a connector and youre good to go. If you solder cabled directly onto a board, only solder one side and use a connector on the other.
That is way, way more service friendly :)


 

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Re: 0.1" pitch PCB header options
« Reply #3 on: March 08, 2015, 09:28:54 pm »
OK, thanks. I think I'll go with service-ability and ease of assembly - Molex (or equivalent).

John
 


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