Conformal Coating Evaluation for Improved Environmental Protection, Phase 3
Wednesday, November 2, 2022

Section: Board Assembly

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Project Leaders

Chair: Marko Pudas (Picosun an Applied Materials Company)

Co-Chair: Prabjit Singh (IBM)

Project sign-up deadline: December 31, 2022

Call-for-Participation Webinar

 Session 1: Thursday, December 1
9:00-10:00 a.m. CST (China)
8:00-9:00 p.m. EST on November 30 (U.S.)
Register for this webinar
Session 2: Thursday, December 1
9:00-10:00 a.m. EST (U.S.)
3:00-4:00 p.m. CET (Europe)
10:00-11:00 p.m. CST (China)
Register for this webinar

Statement of Work & Project Statement 

Coming soon


Conformal coatings are used to protect printed circuit boards (PCB) and components mounted on them from the deleterious effects of moisture, particulate matter, and corrosive gases. The objective of the project is to develop and expedite a quantitative test for evaluating conformal coating performance on test vehicles that resemble the actual hardware.
Phases 1 and 2 of the project established a quick and quantitative test for characterizing the performance of conformal coatings, using planar test vehicles consisting of Cu and Ag serpentine thin films.  There are two shortcomings of the test: (1) The serpentine films are on silicon, not on PCB-like surfaces and (2) the test vehicles are not representative of the 3D structure of actual PCB assemblies.

Phase 3 Focus

 Phase 3 plans to:
  • Design test vehicle with 3D structures on PCB substrate, including interface electronics for measuring and heating the test vehicle.
  • Enable comparison of different coating materials, thicknesses, and cleaning methods by the FoS, MFG and IVT during corrosion exposure.
  • Incorporate coating performance evaluation test into industry standards.


Haley Fu