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Bitu , 07-12-2025, 06:23 AM

Hello everyone,

I’m currently working on PCB design and want to ensure proper EMI/EMC compliance from the very first prototype. I’m looking for practical guidelines, checklists, or any resources that can help me avoid common EMI/EMC issues during layout and design.

If anyone can share their experience, documents, or learning materials, it would be a great help. I truly appreciate any guidance from the community.

Robert Feranec , 07-12-2025, 06:33 AM

you may need to be more specific e.g. what kind of circuit will be on the PCB (microcontroller, high speed, RF, Radio, switching power supply, ....). I have done videos on some topics, for example like these: https://www.youtube.com/@RobertFeranec/search?query=emc

Bitu , 07-12-2025, 07:03 AM

Thank you, Robert.

To be more specific, my PCB includes:

A BLE module

A Wi-Fi module

A buzzer driver IC

One Flash IC

TVOC and CO sensors

And a BGA-packaged microcontroller


This is my first time working with a BGA, and it's a big challenge for me. I’m especially concerned about EMI/EMC compliance, and how to properly route signals from the BGA. Since I need to use thin tracks to escape the BGA pads, I’m also worried that longer trace lengths might cause signal integrity or EMI issues — especially with high-speed or sensitive lines.

Also, I’m trying to learn the basics of EMI/EMC design — like what key principles I should keep in mind while designing the PCB, so I can do it properly from the very beginning. If you could suggest fundamental resources, design rules, or learning paths, that would be a huge help.

Thanks again for your support!

QDrives , 07-12-2025, 04:16 PM

EMC is not just the board, it is the system / machine / full product. This includes wiring, enclosure, power supply, etc.
It also not just the layout of the board, but the components themselves can cause problems.

Bitu , 07-12-2025, 04:23 PM

You're absolutely right — EMC is a system-level concern, not just about the PCB. It includes the entire product: wiring, enclosure, power supply, and even the components used. I really want to learn and understand EMC thoroughly — how each part of the system can impact it, and what best practices I should follow during design. I'm very interested in gaining practical, real-world knowledge about this so that I can design more robust, EMC-compliant products from the start.

If you have any suggestions, resources, or guidance, I’d be truly grateful!

QDrives , 07-12-2025, 08:14 PM

There are many tiny things that make a board scream EMI.
Not everything can be learned/found by reading or watching tutorials. Some you just have to experience.
All the basics will be in the video list Robert already mentioned.

Robert Feranec , 07-15-2025, 05:02 AM

if you use at least 4 layer PCB, with solid GND plane and route your tracks with 50 OHMS, the PCB signals of this board should not make EMC problems. If you are not sure about EMC I highly recommend don't use 2 layer PCB. Also, if you have any switching power supplies, be sure you place components close and use short connections.

Bitu , 07-17-2025, 04:11 PM

Thanku