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December 2001

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Subject:
From:
Jon Metz <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 10 Dec 2001 15:35:36 -0500
Content-Type:
text/plain
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text/plain (49 lines)
>  <<CDE_CAPS.pdf>>
>
>  -----Original Message-----
> From:         JMetz [mailto:[log in to unmask]]
> Sent: Monday, November 26, 2001 9:41 AM
> To:   [log in to unmask]
> Subject:      Cornell Duplier capacitor mounting pad dimensions
>
>
> Please review the attached PDF file as it contains the recommended pad
> layout for a "G" package electrolytic
> capacitor. I have the pads layed out on the PCB exactly as recommended
> by the part supplier and upon inspection
> (a lot of 12) 1 capacitor was twisted on the pads. Our QC manager and
> I both feel that it passes IPC class 2 assembly
> requirements. We have passed the assembly thru QC and it has been
> issued to the floor as is with no rework.
>
> My question is this: Having satisfied the requirement of class 2 we
> would like to know if it would be advisable to change
> the pad dimensions to avoid future twisting of the part on it's
> mounting pads? If so, what would be the new pad width
> (C) that you would recommend? From .079 to what?
>
> I would appreciate hearing from you at your earliest convenience.
> Thanks in advance for your help.
>
> Regards,
>
> Jon Metz
> PCB Designer
> Mitec Wireless Inc.
> Phone: (732) 542-1133 Ext. 224
> Fax:     (732) 542-1118
> All restrictions regarding distribution of Mitec Wireless Inc.
> proprietary information is applicable to this electronic message.
>
>

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