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Copper Oxide Thickness Measurement on PCBs

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#62563

Copper Oxide Thickness Measurement on PCBs | 30 August, 2010

Is there any way to measure the copper oxide thickness on the inner layers of a PCB? I have been asked to investigate this and am not sure if it is possible.

If it is, please tell me by what method, any contract labs that can do it, or the name of a manufacturer that could perform the measurement.

Thanks for any help you can give.

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#62568

Copper Oxide Thickness Measurement on PCBs | 30 August, 2010

Sure, you should be able to measure the copper oxide thickness on the inner layers of a PCB when doing sections.

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#62570

Copper Oxide Thickness Measurement on PCBs | 30 August, 2010

Dave,

Thanks for the reply. I didn't realize that you would be able to measure it by cross-section. I guess I was making it more difficult that it had to be.

Thanks.

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#62636

Copper Oxide Thickness Measurement on PCBs | 3 September, 2010

Dave can you be more specific on this? I will be interested to see such a picture from cross-section with an oxide layer. Is this possible? Thanks in advance. Nicoleta.

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#62638

Copper Oxide Thickness Measurement on PCBs | 3 September, 2010

James, Are you referring to oxidation caused on outer layers of PCB on account of poor OSP finish over Cu?

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#62658

Copper Oxide Thickness Measurement on PCBs | 8 September, 2010

SERA testing (sequential electrochemical reduction analysis)can measure surface oxidation, not sure on inner layers.

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Ray

#62689

Copper Oxide Thickness Measurement on PCBs | 14 September, 2010

PCB X-Ray Inspection

SMT in-printer dispensing