Designing for Selective Robotic Conformal Coating Processing: Rule 1
When you are considering the board design for applying the conformal coating using a robot system then consider how you want the board to be coated? Must all of the PCB be coated? What areas are critical and what must not be coated? Are there areas where it doesn’t matter if coating is there or not?
Designate three areas on a conformal coating diagram. These are:
- Areas that MUST be coated
- Areas that MUST NOT be coated
- Areas where it doesn’t matter (coating is optional).
Breaking the PCB into these three areas allows application engineers to understand the priorities of the protection required for the coating, especially where coating doesn’t. Removing the ambiguity from the process creates focus on what really matters.
The Rules for Selective Conformal Coating are straightforward. Follow them and you can save money and time in your application process. However, if the Rules are not followed, the resultant circuit board design can challenge even the most sophisticated conformal coating system and its operator to achieve the finish desired.
Click Designing Circuit Boards for Selective Robotic Conformal Coating for further Rules.