Medical PCB DFM Check
Most medical PCB designs that fail at the NPI stage don’t fail because the schematic was wrong — they fail because a manufacturing risk that was visible at the layout stage was never flagged. This review maps your design parameters against IEC 60601, IPC Class 3, and medical manufacturing requirements, and returns a risk report in under two minutes.
Assessment confidence: Preliminary — based on parameter inputs only. Gerber-level review is required for validation. Some risk ratings depend on your manufacturer's specific process capability and should be confirmed during pilot build.
Request an engineering review
Our medical PCBA team will review your Gerber files against these risk items and return a formal DFM report within 24 hours.
How to read your results
This review is a preliminary engineering assessment based on your inputs — not a pass/fail certification. Each finding is classified into one of four levels. Use them to prioritise what to address before your next design milestone.
A risk that is likely to cause regulatory non-compliance, field failure, or production stoppage. These items should be resolved — or formally risk-accepted with your regulatory team — before committing Gerber files to a pilot run.
A risk with meaningful impact on yield stability, long-term reliability, or compliance documentation. Not immediately blocking, but unresolved High items tend to surface as costly surprises late in the NPI cycle.
A consideration that does not directly block production but may affect performance, cost, or audit readiness. Advisory items are worth discussing with your engineering and quality teams before scaling to production volumes.
This parameter set does not trigger a risk flag for this check category. Passed items are included so you have a complete picture of what was evaluated, not just what failed.
All findings are based on parameter inputs only. Gerber-level DFM review is required to validate specific layout geometry. Some risk ratings depend on your manufacturer's process capability and should be confirmed during pilot build qualification.
FAQ
Common questions from medical hardware engineers and NPI teams before submitting a medical PCB design for production.
Does my medical device PCB need to meet IPC Class 3?
Not automatically — but for most implantable, life-sustaining, or life-supporting devices, IPC Class 3 is the expected manufacturing standard, and many regulatory bodies and notified bodies will ask for evidence of Class 3 conformance during technical file review.
IPC Class 3 requires tighter annular ring tolerances, zero breakout on through-hole vias, minimum 1 mil copper in hole walls, and stricter visual inspection criteria under IPC-A-600 and IPC-A-610. It also implies higher process capability requirements from your PCB fabricator and assembly house.
Devices that typically require Class 3: cardiac monitors, pacemaker programmers, surgical robots, infusion pumps, ventilators, implantable electronics, and defibrillators. Devices where Class 2 may be acceptable: low-risk diagnostic equipment, administrative medical hardware, and Class I devices — confirmed with your regulatory team.
What is IEC 60601 and which PCB design rules does it affect?
IEC 60601-1 is the international standard for basic safety and essential performance of electrical medical equipment. At the PCB level, its most direct impact is on creepage and clearance distances — the minimum spacing between conductors at different potentials, measured across the surface (creepage) and through air (clearance).
These distances are determined by working voltage, pollution degree, overvoltage category, and whether the insulation is functional, basic, supplementary, or reinforced. The values in IEC 60601-1 Table 2 are significantly more conservative than IPC-2221 defaults, particularly for patient-connected circuits (applied parts).
IEC 60601-1-2 (the EMC collateral standard) additionally affects PCB layout decisions around ground plane continuity, shielding, filtering at connectors, and routing of high-speed signals near analog or patient-connected circuits.
If your device connects to a patient — or is powered from mains — IEC 60601 compliance is not optional. For CE marking in the EU and FDA clearance in the US, it is the baseline expected standard.
How early in the design process should I run a DFM review?
Earlier than most teams do it. The most common — and most expensive — pattern is running a DFM check only after layout is complete and files are ready for fabrication. At that point, any significant finding either gets waived (introducing risk) or triggers a layout respin (introducing delay).
The pre-production review on this page is designed to be run at the architecture stage — before layout begins — using only your device category, stack-up intentions, and process requirements. It gives your layout team the constraints they need before they start, not after.
For a full Gerber-level DFM review, the optimal timing is after layout is 80–90% complete but before the design is frozen. This leaves enough room to act on findings without schedule pressure forcing waivers.
Does my PCB manufacturer need ISO 13485 certification?
For most regulated medical device submissions, yes — and the scope matters as much as the certificate. ISO 13485 certification must explicitly cover PCB and electronic assembly within its scope statement. A manufacturer with a certificate that covers only mechanical components is not compliant for your PCBA supply chain.
Under FDA 21 CFR Part 820 and EU MDR Article 10, device manufacturers are responsible for qualifying their suppliers. Selecting an ISO 13485-certified PCB manufacturer significantly simplifies this supplier qualification process and reduces audit burden.
Beyond certification, look for: documented lot traceability, a Device History Record (DHR) process, incoming inspection procedures, and an IPC-A-610 Class 3 assembly inspection programme.
What surface finish is recommended for medical PCBs?
ENIG (Electroless Nickel Immersion Gold) is the most widely specified finish for medical PCB assemblies. It provides a flat, solderable surface compatible with fine-pitch components, is corrosion-resistant, and performs well under sterilization stress — making it the default recommendation for IPC Class 3 medical boards.
HASL (Hot Air Solder Levelling) is not recommended for medical assemblies with fine-pitch components, sterilization requirements, or Class 3 reliability targets. Its uneven surface and tin-lead or lead-free alloy are prone to degradation under repeated thermal and humidity cycling.
ENEPIG (Electroless Nickel Electroless Palladium Immersion Gold) is preferred where wire bonding or mixed assembly processes are required — common in implantable electronics and some high-frequency imaging boards. OSP (Organic Solderability Preservative) is acceptable for low-risk, non-sterilizable assemblies with short shelf life requirements.
What files do I need to request a formal DFM review?
For a complete Gerber-level DFM review, provide the following:
Required:Â Gerber files (RS-274X or ODB++) for all layers including copper, solder mask, silkscreen, and board outline; drill file (Excellon format); board stack-up specification with layer materials, copper weights, and dielectric thickness.
Recommended:Â Bill of Materials (BOM) with manufacturer part numbers; assembly drawing or pick-and-place file; IPC Class requirement (Class 2 or Class 3); device category and applicable standards (IEC 60601, IPC-6012DA, etc.); any known impedance control requirements.
You do not need to have a finalised BOM or completed layout to request a preliminary review — our engineering team can work from a partial design and flag risks before layout is frozen.