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'[EE]: vias in low vol double sided board productio'
2002\02\19@062955 by Stuart Meier

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Having searched the archives without success, can anyone suggest a good
way to do vias on smt double sided boards in low volume production ....

Most of my stuff is single sided hand soldered, but I have a short run
of two sided with half a dozen vias needed on each densely packed board

For prototypes I just use scrap from led legs otherwise discarded, and
soldered both sides, but something faster is needed with a few hundred
vias to do.

Stuart Meier

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2002\02\19@064236 by mike

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For through-linking (i.e. no component leads through holes) you can't
beat snap-off linking pins - very easy and fast to use.
See http://www.netcomuk.co.uk/~wwl/pcbs.html
Scroll down to 'through plating'


On Tue, 19 Feb 2002 11:26:25 -0000, you wrote:

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2002\02\19@072227 by Vasile Surducan

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Mike, this is indeed a very good page for homebrewing pcbs !
In fact all your pages from here are great!

Vasile
http://www.geocities.com/vsurducan

On Tue, 19 Feb 2002, Mike Harrison wrote:

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2002\02\19@110527 by Jim

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In past years - eyelets (small rivets) were used.

Drill apporpriate hole, insert eyelet, crimp, solder.

We used those when prototyping low-Z med. power
stripline/microstrip RF board designs.

Jim

{Original Message removed}

2002\02\19@123022 by Dwayne Reid

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At 11:26 AM 2/19/02 +0000, Stuart Meier wrote:
>Having searched the archives without success, can anyone suggest a good
>way to do vias on smt double sided boards in low volume production ....

We use something called 'Track Pins' made by Harwin (UK, I think).  We used
to get them from Arrow/Bell but I don't know if they still have them.

These are a stick of tapered pins that you push into the hole, then snap
off.  Nice tight fit inttp:/#66 hole.

dwayne


Dwayne Reid   <EraseMEdwaynerspam_OUTspamTakeThisOuTplanet.eon.net>
Trinity Electronics Systems Ltd    Edmonton, AB, CANADA
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2002\02\19@140958 by Chris Loiacono

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Someone posted a link on here a few months ago that was a pretty simple
solution. A small copper tube with scored break-away sections was available
in a few different diameters.

Perhaps someone remembers or has more time to look through the
archives...today's a killer for me time-wise....

Chris

Subject: Re: [EE]: vias in low vol double sided board production


In past years - eyelets (small rivets) were used.

Drill apporpriate hole, insert eyelet, crimp, solder.

We used those when prototyping low-Z med. power
stripline/microstrip RF board designs.

Jim

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2002\02\19@151728 by Dwayne Reid

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At 02:09 PM 2/19/02 -0800, Chris Loiacono wrote:
>Someone posted a link on here a few months ago that was a pretty simple
>solution. A small copper tube with scored break-away sections was available
>in a few different diameters.

Good memory!

Multicore makes one version called Copperset
<http://www.multicore.com/detail.asp?id=35&cat=Accessories>

I have one and use if occasionally - it works well but is actually more
work than the Harwin Track pins I mentioned earlier.

It works best if you use it before the board is populated - place the board
on a smooth steel surface, insert the feed-through pins, then set them with
the impact punch.

dwayne


Dwayne Reid   <KILLspamdwaynerKILLspamspamplanet.eon.net>
Trinity Electronics Systems Ltd    Edmonton, AB, CANADA
(780) 489-3199 voice          (780) 487-6397 fax

Celebrating 18 years of Engineering Innovation (1984 - 2002)
 .-.   .-.   .-.   .-.   .-.   .-.   .-.   .-.   .-.   .-
    `-'   `-'   `-'   `-'   `-'   `-'   `-'   `-'   `-'
Do NOT send unsolicited commercial email to this email address.
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2002\02\19@154133 by Jim

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"Eyelets" and an "Eyelet press" for doing PTH proto or
repair work (I hadn't used one of these in over 20 years,
I haven't, to my knowledge, used specifically this model,
but this looks *very* close):

http://www.circuittechctr.com/products/110-5202.htm


The following Google search came up with some more
interesting/related stuff:

www.google.com/search?hl=en&as_qdr=all&q=eyelets+%22plated+through+ho
le%22&btnG=Google+Search

Jim



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