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January 1999

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Subject:
From:
Mark Ross <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 11 Jan 1999 23:03:52 -0500
Content-Type:
text/plain
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text/plain (82 lines)
Tom,

It will depend also on your pad style.  We run this way.


            0                0
            0                0
            0                0        ----------->
            0                0
            0                0
            0                0
            0                0
            0                0


In other word perpindicular to the wave.  We are running at close to a zero defect level using a 64X100 mil
pad with traces between and using a no wash system.  As geomtries get tighter give up thru hole.  THis is
coming from someone who has 12 year experience in thruough hole and has given up the ghost.  With SMT run
in opposite and use robber pads or cram your decoupling cap on the as* end of you ic to rob the solder.
i.e


                        vcc
            0             - 0
            0              | 0
            0              | 0
            0              | 0
            0              | 0
            0              | 0
            0              | 0
  gnd    0capacitor0

Tom Braswell wrote:

> Netters,
>
> Someone tell me which of these two is correct for wave soldering
>
> 1.       Direction thru wave -------------------->
>
>                     _|__|__|__|__|__
>                     |                           |
>                     |                           |
>                     |____________|
>                       |    |     |     |    |
>
> 2.  Direction thru Wave ----------------------->
>
>                      _______
>                 __|               |__
>                 __|               |__
>                 __|               |__
>                 __|               |__
>                     |_______|
>
> Thanks,
>
> Tom B.
>
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