Anna wrote:
>Hello
>I have a question about the standard. When we measure the copper
>thickness in holes and blind vias we use a lins for 200X magnification.
>What says the standard about this? We have the IPC from 1982 and it says
>that we should measure at 100X. At this magnification is hard to se
>properly. Thank you for your help.
>
>E.mail- [log in to unmask]
>--
Anna
IPC-HF-318A, Rev. A, Dec. 91 says:
"... foil and plating integrity at a magnification of 100X, +-5%. Referee examinations
shall be accomplished at a magnification of 200X, +-5%."
Best regards
Simon
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Optiprint AG
Simon Huetter Tel.: +41 71 878 77 77
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