You've spent months, maybe years, developing your product and you're finally ready to get it certified.

Then it fails compliance testing.

Now you're looking at a complete redesign, thousands of dollars in retesting fees, and a launch delay that could sink your entire project.

Certain types of electronic circuits fail compliance testing at much higher rates than others.

So if you know which circuits cause the most trouble, you can design around those problems from the start instead of discovering them in the test lab.

In my latest video, I break down the 12 types of electronics most likely to fail compliance testing, along with what you can actually do about each one.

12 Electronic Circuits That Fail Compliance Testing

Or if you prefer, you can read about it here.

Switching voltage regulators are the single most common cause of failures because they work by rapidly switching current on and off, which generates harmonics that spread into the frequency ranges where FCC and CE measure emissions.

USB-C with Power Delivery is another big one because those voltage transitions between 5V, 9V, 15V, and 20V combined with high currents make conducted emissions much harder to control.

Even pre-certified wireless modules can fail if your antenna design is wrong, your ground plane is inadequate, or your power supply injects noise into the module.

And if your product plugs directly into a wall outlet, you're dealing with one of the riskiest compliance categories that exists, requiring separate safety certifications.

The video also covers high-speed digital interfaces, battery charging circuits, audio amplifiers, LED drivers, and several others that regularly cause problems in the test lab.

For each circuit type, I walk through specific fixes you can apply during design so you catch these issues before they become expensive.

Talk soon,
John