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April 2004

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Subject:
From:
"Victor G. Hernandez" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 20 Apr 2004 15:59:42 -0500
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Ramon,

   I have seen the 1.5% and 0.75% criteria before.   What I am not sure
is % of what base number.

Victor,

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Dehoyos, Ramon
Sent: Tuesday, April 20, 2004 1:07 PM
To: [log in to unmask]
Subject: Re: [TN] PCB Raw card Boe & Twist Tolerance


        Hi Victor:
                 It should definitely be less than 1.5% for THT and less
than 0.75% for SMT, which that is what it is for a board after it has
been soldered.
        JStd.001B 9.2.3
        Regards,
        Ramon

> -----Original Message-----
> From: Victor G. Hernandez [SMTP:[log in to unmask]]
> Sent: Tuesday, April 20, 2004 1:02 PM
> To:   [log in to unmask]
> Subject:      [TN] PCB Raw card Boe & Twist Tolerance
>
> Steve,
>
>     What has been your experience with measuring Bow & Twist on a raw
> card.   Is there a RULE Of Thumb that can apply generically.
>
> Victor,
>
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