Sponsor

Is My PCB Wash Concentration in Check
Evaluating wash concentration levels through varying testing methods can potentially save process time, reduce overall process costs, and increase cleaning efficacy on PBCs. Read more.
KYZEN

Sponsor

Vapor Phase Profiling
Thermal profiling the vapor phase soldering process – especially those with vacuum – is challenging. ECD's M-VP™ sealed barrier can take it. Learn more.
ECD

Ask the Experts

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

Expert Panel Responses

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.

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.

Submit A Comment

Comments are reviewed prior to posting. You must include your full name to have your comments posted. We will not post your email address.

Free Newsletter Subscription
Circuitnet is built for professionals who bear the responsibility of looking ahead, imagining the future, and preparing for it.

Insert Your Email Address

Sponsor

Thermally Conductive Epoxy
Master Bond Supreme 11AOHTLP is a two component adhesive featuring thermal conductivity and electrical insulation for high performance bonding, sealing and coating.
Master Bond

Circuitnet Advertising Delivers Results!

Circuitnet provides excellent e-media visibility with advertising designed to meet every budget. We reach 200,000 industry professionals who are eager to learn more about your products and services.

LEARN MORE