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January 1999

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Subject:
Re: Double Sided Surface Mount
From:
John Chandler <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 18 Jan 1999 06:11:36 +0100
Content-Type:
text/plain
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text/plain (54 lines) 
Hi,

We have been doing double sided pcb for about two years now. We do it the
hard way by having min. heat on the bottom and reflow the top then let go
thru a water wash. Then run the top side. We use the same paste on both
sides. Of course the 1st side done has no large I.C.'s or resonators, but
the bottom does. Have fun.



At 01:17 PM 1/18/99 , you wrote:
>Hello,
>
>I am about to attempt to surface mount onto both sides of a board, having
>never attempted this before I wonder if anyone out there knows of any good
>reference materials or has any tips that might help me?
>
>Do you use two different pastes with different melting points and two passes
>in the oven or carriers to hold to underside components in place during
>reflow?
>
>Any info I would be grateful.
>
>Cheers
>
>Andrew Sherry
>
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