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August 2001

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Subject:
From:
"COWEN,MARC (A-Scotland,ex1)" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 27 Aug 2001 09:52:14 +0200
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Hi Stephen,

Heller ovens go up to a 30" wide apperture, I would give them a shout.

Marc.


-----Original Message-----
From: Stephen R. Gregory [mailto:[log in to unmask]]
Sent: Saturday, August 25, 2001 12:23 AM
To: [log in to unmask]
Subject: [TN] MONSTER board!!!


Happy Friday All!

Well, it seems another "opportunity" has presented itself to me. Looking to
assemble a 24" X 24", 52-layer board... piece-o-cake, right?

Not real sure of all the components that are on it yet, but I do know that
there is some 20-mil pitch stuff...

I've been asked to investigate what it would take equipment-wise, and
dollar-wise for us to do this.

Printing, I know of Surface Mount Techniques that have large board printing
capability. Pick and place, I know that Mydata can place monsters such as
these...

Reflow has me a bit stumped...I've heard that Heller ovens have throats big
enough to swallow something like this, but when I checked some spec's on
their web page, they say their oven can handle 23.5" boards. I also looked
into Vapor phase reflow units, and R & D Technical Services (formerly
Centech) has a unit called a RD3 that has 24" X 24" process
chambers...thinking about it, vapor phase may be the way to go with this
beast...it's around .390" thick!

I've got a Electrovert MCS-1000 batch cleaner, so it'll be able to clean
this
thing...
won't need wave solder, so that's one blessing...

Just asking if there's any other vendors of equipment that can handle boards

this size other than the ones I've listed.

Sure would like to find some used stuff because the equipment that we get
would only be used on this beast. The quantities aren't going to be that
high
at all...

Thanks!

-Steve Gregory-

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