Services/EMI/EMC
EMI/EMC Compliance Engineering
SiGenix designs products to pass EMC testing the first time — EMI-aware PCB layout, filter design, and in-house pre-compliance testing against FCC Part 15, CISPR 11/22, and IEC 60601-1-2 limits. And when a product has already failed at the test lab, we find the root cause and fix it.
Getting Through the Test Lab on the First Attempt
EMI failures are expensive and demoralizing late in a product cycle — a failed scan can mean a board respin, a slipped launch, and another round of test lab fees. We design for compliance from the start, using proper layout techniques, partitioning, and filtering strategies, then verify with pre-compliance testing before the formal scan.
When products do fail — whether we designed them or not — we diagnose the actual root cause rather than applying ferrites and hoping. Radiated emissions, conducted emissions, and immunity failures each leave fingerprints; reading them correctly is the difference between a targeted fix and weeks of trial and error.
What Our EMI/EMC Services Include
EMI-Aware PCB Layout
Layout and partitioning practices that prevent emissions at the source — stackup planning, return path control, and segregation of noisy and sensitive circuits.
Filter Design
Common-mode and differential-mode filter design for power inputs, motor drives, and cable interfaces — sized from measurements, not guesswork.
Pre-Compliance Testing
In-house pre-compliance radiated and conducted emissions testing to find and fix problems before paying for formal test lab time.
Immunity & Susceptibility
IEC 61000-4-x immunity testing and hardening — ESD, EFT, surge, and radiated susceptibility — so products survive the real world, not just the bench.
FCC Part 15 & CISPR Compliance
Design and remediation against FCC Part 15 and CISPR 11/22 emissions limits for commercial, industrial, and ISM equipment.
Medical Device EMC
EMC design and testing for medical devices per IEC 60601-1-2, where immunity requirements are stricter and failures carry regulatory consequences.
Frequently Asked Questions
Our product failed EMC testing. Can you fix it?
Yes — this is one of the most common reasons clients call us. We diagnose the root cause of the failure from the test data and the design, implement targeted fixes (layout, filtering, grounding, or shielding), and verify with pre-compliance measurements before you return to the lab.
What standards do you design and test against?
FCC Part 15 and CISPR 11/22 for emissions, IEC 61000-4-x for immunity and susceptibility, and IEC 60601-1-2 for medical device EMC.
Do you do pre-compliance testing in-house?
Yes. We perform pre-compliance radiated and conducted emissions testing in-house, which lets us find and fix problems iteratively without paying for formal test lab time on every attempt.
Can EMI problems be prevented during design?
Largely, yes. Most EMC failures trace back to PCB layout and filtering decisions made early in the design. Designing with proper stackup, partitioning, return paths, and filter provisions from the start is far cheaper than fixing a failed product.
Facing an EMC deadline — or a failed scan?
Whether you're designing for compliance from day one or staring at a failed test report, tell us where things stand and we'll tell you honestly how we can help.
Contact Us