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August 27, 2007 - Updated
August 27, 2007 - Originally Posted
Conformal Coating Specification Violation
Is it a violation of any specification to avoid conformal coating encapsulated components and masked areas of the PCBA?
Don Graybill
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| Expert Panel Responses |
The amount and coverage of conformal coating is and must be based upon the product design criteria. For example IPC-A-610 D on page 10-51 states in the Acceptable Class 1, 2, 3: second bullet, - Coating only in those areas where coating is required. This is determined by the design criteria of the product and again should be defined on the Master Drawing.
Leo Lambert
Vice President, Technical Director, EPTAC Corporation
At EPTAC Corporation, Mr. Lambert oversees content of course offerings, IPC Certification programs and provides customers with expert consultation in electronics manufacturing, including RoHS/WEEE and lead free issues. Leo is also the IPC General Chairman for the Assembly/Joining Process Committee.
I don't understand the question. To avoid conformal coating? To avoid touching conformally coated components? Needs clarification.
Dr. Craig D. Hillman
CEO & Managing Partner, DfR Solutions
Dr. Hillman's specialties include best practices in Design for Reliability, strategies for transitioning to Pb-free, supplier qualification, passive component technology and printed board failure mechanisms.
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