Hi Borch,



I assume you are asking about ENIG.

IPC-4552 Specification for Electroless Nickel/Immersion Gold (ENIG) Plating for Printed Circuit Boards recommends the use of XRF for this thickness measurement.  I did not find a specific recommendation as to the preferred measurement location on the ENIG coated surface.



Best regards,

Dave



David W. Bergman   大山人

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IPC - Association Connecting Electronics Industries

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From: TGAsia [mailto:[log in to unmask]] On Behalf Of Borch Li

Sent: Tuesday, November 16, 2010 7:58 PM

To: Listserv TGAsia

Subject: [TGAsia] PCB金镍层厚度测量位置哪个IPC有说明



Hi All,

哪位兄弟知道PCB金镍层厚度测量位置哪个IPC有说明.谢谢



Best regards&Thanks!

Multek B5 PQE

Borch Li



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