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Reply To: | (Leadfree Electronics Assembly Forum) |
Date: | Sun, 3 Aug 2003 00:54:42 EDT |
Content-Type: | text/plain |
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In a message dated 08/02/2003 0:50:34, [log in to unmask] writes:
>By now I have seen quite a bit of ATC presentations for Lead Free and I am
>a bit surprised that this is the first time I have read about a soak or
>dwell time at each temperature extreme. Most have reported that they just
>go up and then back down in temperature. 30minutes up and 30 minutes down,
>thus 24 cycles a day across the range they have selected seems quite common.
>Any comments??
>Have you also seen this type ATC procedure?
Hi Dave,
Yes, unfortunately I have seen them--and it's a pity. These data are worse
than useless--they are misleading. But that comes from people doing things
without understanding them, and from people being pushed to produce data
fast--nevermind that they are meaningless
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