Category:PCB PCB Quality

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How can we guarantee the quality of pcb? There are commly several ways to control the quality, such as by DRC Check, Electrical Testing, AOI(Automated optical inspection), RoHS...

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RoHS Board Delamination Reply 2017-02-28 21:10:00
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Martin Banky

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We are experiencing an issue with RoHS boards delaminating during SMT. In tyring to determine root cause, our board mfg house states the issue is with the laminate.
The laminate supplier states that the board house is not taking the proper precuations in preventing moisture absorption prior to processing. They state that due to the higher temperatures of RoHS processing, additional care must be implemented to ensure that there is no residual moisture during storage prior to processing (i.e. environmentally controlled storage required), and that a pre-bake should be performed prior to assembly.
Is this increased sensitivity of RoHS boards to moisture standard? We have not had any issue with the non-RoHS boards, so we are confident that this is isolated to just the RoHS boards.
Any advice would be appreciated.
Thanks.
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Statement: This post is only the personal view of the author and does not represent the opinions of ALLPCB.com.

Pedro Skou

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Pretty good and useful info for beginners.

IngeniApp

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A good piece of info for learning.

tomas ageitos

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Good resource for new beginners.

Ciurdar Gabriel

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Remarkable.I have learned a lot from your post.
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