Steve -

I would use either drag solder or reflow solder with solder doughnuts. Back
in the old days, we used to solder large backplanes with solder doughnuts
and vapor phase soldering. I've also soldered backplanes like this with drag
solder but you may have a problem with the wire wrapping and getting a tight
connection. The backplanes we did with the drag solder were not wire
wrapped.

Ed Valentine/

Edward J. Valentine
Electronics Manufacturing Solutions
5702 Myakka Court
Raleigh, NC USA 27616-3243
Phone: (919) 270-5145
[log in to unmask]
www.ems-consulting.com

----- Original Message -----
From: "Steve Gregory" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, March 11, 2004 10:37 AM
Subject: [TN] How would you solder this Backplane?


> Mornin' All!
>
> One of the guys from our bid department asked me to come and look at a
> backplane we're bidding on, and tell him how we would solder it? I went
and looked
> at it, and I'm not sure how we would. Go to
http://www.stevezeva.homestead.com
> and take a look at Backplane Topside, Backplane Backside, and Backplane
> Backside Leads.
>
> The leads for all the connectors protrude at least a half inch or longer
out
> the bottom of the board. I'm assuming they are that long because they get
wire
> wrapped after the backplane is assembled. But how do you solder something
> like that? Some sort of dip solder pot? Drag solder? I don't think I'm
going to
> be able to solder a board with leads that long in our Electra wave solder.
>
> I can tell board was mass soldered, and I'm thinking it was dipped
somehow.
> Because you can see tiny little peaks on most of the lead tips that go
straight
> up and down. Is there such thing as some sort of dip solder machine?
>
> Sorry for all the dumb questions, but I've never been around a backplane
like
> this, and don't really know how something like this gets built.
>
> Thanks!
>
> -Steve Gregory-
>
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