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Consistent copper thickness across panels directly affects etching accuracy, conductor geometry, electrical performance, and ultimately, product reliability. It is a persistent manufacturing challenge, and for PCB fabricators serving advanced markets—including RF applications, power electronics, and other high-performance technologies—electrolytic copper plating is one of the most critical process steps.
In response, manufacturers typically modify shielding, rectification, or tooling, which may require an expensive hardware change. Chemistry and current density have also traditionally received much of the industry's attention in plating optimization. But what if much of that optimization could begin before any hardware, chemistry, or current density changes were made? GreenSource Engineering explored this question by taking a controlled look at how much influence the physical dynamics of the plating process itself have on copper distribution.
To that end, the Engineering team examined the influence of three physical process variables: horizontal agitation, vertical agitation, and pump pressure, using its RESOLUTION™ V vertical plating platform. The results suggest that process dynamics alone can have a measurable impact on plating uniformity.
Looking Beyond Chemistry
GreenSource’s vertical plating platform is a modular electroplating system designed for demanding applications requiring thick copper deposits and high aspect ratio blind microvias. Rather than relying solely on conventional process optimization techniques, the system incorporates several design features intended to improve electrolyte movement and mass transport throughout the plating cell.
To continue reading this article, which originally appeared in the August 2026 edition of I-Connect007 Magazine, click here.
