GROUNDED: EMC/EMI & PCB Design Nuggets

Most assume passing EMC is all about filters, capacitors, shielding, or ferrite beads.

But there are more efficient, cost-effective ways to succeed on the first try: by guiding electromagnetic fields in between conductors, not electrons inside the copper.

Here are some essential approaches:

- Choose the correct stackup for a strong base.

- Place components thoughtfully: divide analog, digital, and power sections.

- Position connectors to avoid trouble.

- Layout traces and vias for signal integrity.

- Avoid common-mode noise sources in the PCB and cables.

- Steer clear of antenna-like copper pours.

- Manage cables well: consider length and distance between them.

Why this matters:

Omitting these is a common reason designs fail EMC tests.

The deeper truth:

We’re often taught electronics is like shepherding electrons through conductors.

In reality, it’s about channelling fields and redirecting their energy efficiently, something many of us have to learn the hard way.

Apply these strategies, and you’ll handle EMI with greater ease.

It’s the fields, not the electrons, that hold the key.

-Dario

P.S. Want to dive deeper into mastering these EMC strategies?

Grab my latest EMI Control Guides here: