Who Really Designs the PCB?

Estimated reading time: 1 minute

“Who designs the PCB?” sounds like a simple question, but it assumes there’s a simple answer. In reality, every discipline involved in product development, from electrical and mechanical engineering to manufacturing and procurement, has a hand in designing the PCB. Today’s products are created through constant collaboration among multiple engineering disciplines, each influencing decisions that affect performance, manufacturability, cost, and reliability.

A Significant Evolution

The PCB designer has not simply gained access to better tools, more automation, and/or sophisticated design methodologies. The role itself has changed. A discipline primarily focused on translating electrical connectivity into physical layout has become a critical integration point where electrical performance, mechanical constraints, manufacturing capability, supply chain realities, and product reliability must all converge.

The reason is that electronic systems have become too complex for any single discipline to optimize independently. Modern designs are a combination of high-speed digital interfaces, RF functionality, advanced packaging, power delivery challenges, thermal constraints, HDI structures, and global supply chains, all of which can change throughout the product lifecycle.

For example, I’ve seen that a decision made by one engineering group rarely remains isolated. A component choice might influence placement, via technology, routing, thermal performance, manufacturing complexity, and long-term availability. In other situations, a stackup decision could affect SI, power integrity, cost, and fabrication yield. A mechanical change can create electrical consequences that were never considered during the original architecture. The PCB has become the physical point where these competing requirements meet.

To continue reading this article, which originally appeared in the August 2026 I-Connect007 Magazine, click here.