EU CE Rule Adds EN 62368-3:2026 for SiC/GaN Devices

On July 4, 2026, the Official Journal of the European Union published mandatory amending Directive (EU) 2026/1192, bringing EN 62368-3:2026 into the coordinated standards framework for CE certification. For SiC and GaN power semiconductor devices placed on the EU market from October 1, 2026, compliance now includes two added tests: repetitive lightning simulation and dv/dt withstand capability. The change matters because it directly affects certification timing, technical file preparation, procurement review, export delivery planning, and product acceptance across modules, discrete devices, and integrated driver solutions.

What the rule change formally introduces

The confirmed facts are limited but clear. According to the provided event summary, the OJEU published mandatory amending Directive (EU) 2026/1192 on July 4, 2026. That directive incorporates EN 62368-3:2026 into the coordinated standards used for CE certification. It requires all SiC/GaN power semiconductor devices placed on the EU market from October 1, 2026 to pass two newly added tests: repetitive lightning simulation and dv/dt withstand testing. The scope expressly covers modules, discrete devices, and integrated driver solutions.

Where the immediate pressure is likely to appear

Export shipments now depend more directly on certification readiness

From an industry perspective, exporters and traders handling SiC/GaN power semiconductor products are likely to face the first practical impact at the market-entry stage. The rule change is tied to CE compliance, so shipment planning, customs-facing document preparation, customer acceptance packages, and delivery commitments may all depend on whether the relevant products can demonstrate conformity to the updated standard set. What deserves closer attention is not only the test requirement itself, but also whether product documentation and declarations align with the revised certification basis before goods are placed on the EU market.

Manufacturing and product teams may need to revisit qualification paths

For manufacturers of modules, discrete devices, and integrated driver solutions, the likely impact falls on product qualification, test scheduling, and technical evidence management. Analysis shows that once two additional tests become part of the coordinated standard pathway, engineering, compliance, and program teams may need to verify whether existing validation records remain sufficient for products intended for EU placement after October 1, 2026. Even where designs are unchanged, the compliance route may still require updated test evidence and corresponding technical documentation.

Procurement and sourcing functions may need clearer supplier evidence

Purchasers and sourcing teams using SiC/GaN power semiconductor components in downstream equipment are also likely to be affected. Observably, when a standard update adds specific transient overvoltage-related tests, procurement review may need to move beyond commercial terms and into certification status, report availability, and supplier documentation completeness. This is especially relevant where procurement decisions are tied to fixed delivery windows or formal bid specifications referencing CE compliance.

Testing and certification support work may become more time-sensitive

Certification-related service providers and testing support organizations may see tighter timing pressure because conformity assessment activity often concentrates around an effective date. It is more appropriate to understand this as a workflow impact rather than a confirmed capacity issue, because the provided information does not describe laboratory availability or enforcement practice. Even so, companies relying on third-party testing or certification support should treat timing, report issuance, and document consistency as practical risk points.

What companies should review now

Check whether in-scope products are mapped correctly

Companies should first confirm which products fall within the stated scope of the change: modules, discrete devices, and integrated driver solutions using SiC or GaN power semiconductor technology for placement on the EU market. This is a basic but necessary step because compliance review, test planning, and customer communication depend on whether a product is actually in scope under the provided description.

Review certification files against the updated test expectations

Analysis shows that technical files, declarations, test reports, and product compliance records deserve immediate review where EU placement is planned for or after October 1, 2026. The practical issue is whether existing files reflect the addition of repetitive lightning simulation and dv/dt withstand testing under EN 62368-3:2026. The provided summary does not include execution details, so companies should avoid assuming that older report sets will be treated as sufficient without further confirmation.

Align delivery plans with compliance milestones

For sales, operations, and supply chain teams, the useful question is whether delivery commitments into the EU market are being made on timelines that assume completed certification work. Where customer contracts, bid documents, or procurement schedules depend on CE-marked placement after the effective date, internal planning should account for the time needed to complete testing, update documents, and clear any internal approval steps.

Watch for downstream document and tender changes

What deserves closer attention is how the rule change may begin to appear in customer qualification requests, technical bid specifications, supplier onboarding checklists, and after-sales traceability records. The event summary confirms the new test requirements, but it does not provide detailed implementation language for commercial documents. Companies should therefore monitor how buyers, distributors, and compliance reviewers start referencing EN 62368-3:2026 in practical transaction documents.

Why this looks like an execution signal, not just a headline

Observably, this update is more than a general policy direction because it ties a named standard revision to CE certification and sets a clear market-placement date of October 1, 2026 for in-scope SiC/GaN power semiconductor devices. At the same time, it would be premature to treat every commercial or enforcement outcome as settled, because the provided information does not describe detailed certification procedures, review criteria, or market surveillance practice. It is more appropriate to understand this as a confirmed compliance change with further execution details still worth monitoring.

How the market should read this development

The clearest takeaway is that the compliance baseline for SiC/GaN power semiconductor products entering the EU market is becoming more specific in relation to transient overvoltage performance. Analysis shows that the immediate consequence is less about broad market prediction and more about operational preparation: certification files, test evidence, procurement controls, and delivery schedules may all need closer review. At this stage, the event is best understood as an already landed rule change with practical implementation questions that the industry should continue to follow carefully.

Basis of this article and points that still need verification

This article is based on the user-provided news title, event date, and event summary. For developments of this kind, commonly relevant source categories include official notices, regulator publications, trade authority information, industry association updates, standards organization documents, and reporting from authoritative industry media. A specific official source link was not provided in the input, so the exact publication record should continue to be verified. Further observation is still needed on implementation details, certification interpretation, tender document updates, market feedback, and how affected companies execute the new requirement in practice.