IEC 62368-3:2026 Adds SAR and Thermal Runaway Tests

On July 15, 2026, the IEC formally released IEC 62368-3:2026 as a dedicated supplement to IEC 62368-1 for wearable products, turning electromagnetic exposure and thermal behavior into more explicit compliance checkpoints for this category. For wearable device makers, component suppliers, certification-facing teams, buyers, and delivery planning functions, this is worth close attention because the update does not just describe product safety expectations; it directly touches testing scope, technical documentation, certification preparation, and the timing of product approval and shipment.

What the new standard formally introduces

According to the provided event information, IEC released IEC 62368-3:2026 on July 15, 2026. The standard is described as a specific supplement to IEC 62368-1 and is intended for wearables.

The confirmed requirements in the provided summary are threefold. First, the new standard makes a SAR spatial peak limit of no more than 1.6 W/kg for 10 g of tissue mandatory. Second, it sets a surface temperature rise limit of no more than 35°C in continuous-wear scenarios. Third, it introduces an accelerated thermal runaway aging test that simulates skin contact.

The same summary also states that certification bodies worldwide have started accepting applications in parallel with the release.

Where the immediate pressure points may emerge

Product developers and manufacturers may face a narrower design margin

From an industry perspective, wearable manufacturers are likely to be the first group affected because the new requirements are tied directly to product performance under body-contact use conditions. The main impact may appear in product definition, verification planning, prototype evaluation, and certification handoff. What deserves closer attention is whether existing product designs and validation files can support the added SAR, temperature-rise, and thermal runaway-related test items without rework.

Certification and testing workflows may become more front-loaded

For certification-related companies and testing service participants, the practical change is that the acceptance of applications has already started, which signals that the standard is entering operational handling rather than remaining only a published text. Analysis shows this may shift more work to the earlier stage of compliance review, including test planning, sample readiness, technical file alignment, and report preparation. Businesses involved in approvals should therefore pay attention to whether their documentation and test submissions clearly map to the new wearable-specific requirements.

Buyers and supply chain coordinators may need to revisit specifications

For procurement teams, brand owners, and supply chain service providers, the effect may show up in supplier qualification, specification alignment, and delivery scheduling. If wearable products are purchased against existing technical requirements, the new standard may require closer checking of whether supplier declarations, test materials, and compliance evidence remain aligned with current acceptance expectations. Observably, the issue is less about a single document update and more about whether sourcing and delivery commitments still match the certification path now being used.

Export and channel operations may need closer document control

For exporters, channel operators, and after-sales functions handling wearable products, the key concern is not a confirmed trade restriction in the provided facts, but a likely increase in scrutiny around conformity evidence once certification bodies are already taking cases under the new standard. It is more appropriate to understand this as a documentation and delivery-control issue at this stage, especially where shipment timing depends on completed testing, approval status, or customer-side compliance review.

What companies should watch now

Check whether current certification files match the new test scope

Analysis shows companies should first review whether current wearable compliance files, test plans, and technical descriptions explicitly address the newly stated SAR limit, the continuous-wear surface temperature threshold, and the skin-contact thermal runaway aging test. Where such coverage is missing or only partially described, the risk is less a formal violation already proven in market use and more a gap in certification readiness.

Review product categories that are clearly exposed to continuous wear scenarios

What deserves closer attention is the scope of products internally treated as wearables and how those products are presented in technical and commercial documents. Where internal classification, supplier specification sheets, and certification submissions are not fully aligned, companies may face avoidable delays in review or approval handling.

Prepare for possible changes in testing schedules and delivery plans

Because certification bodies have already begun accepting applications, businesses with upcoming launches or deliveries may need to check whether test booking, sample preparation, and approval sequencing still fit their original schedule. This should be treated as a planning issue rather than a confirmed market-wide delay, since the provided facts do not define processing times or transition arrangements.

Keep bid files, supplier records, and quality traceability materials consistent

Observably, firms involved in procurement, tendering, or customer-facing technical submissions should verify that bid attachments, compliance statements, supplier qualification records, and quality traceability materials do not lag behind the new standard reference. This does not mean all counterparties will immediately demand the same document set, but it does mean inconsistencies may become more visible once the new standard is actively entering certification workflows.

Why this looks more like an execution signal than a distant update

Analysis shows this development is better read as an implemented standards change with near-term compliance implications, not merely as a policy direction under discussion. The reason is straightforward: the standard has been formally released, the technical requirements in the provided summary are specific, and certification bodies have already started accepting applications. At the same time, it remains necessary to watch how testing interpretations, document expectations, and customer-side specification updates are applied in practice, because those operational details were not provided in the input.

How to read the current stage of the change

At this stage, the most balanced reading is that IEC 62368-3:2026 creates a clearer and more operational compliance framework for wearables by adding mandatory SAR, surface temperature, and simulated skin-contact thermal runaway aging requirements. For the industry, the significance lies less in headline value and more in the practical effect on testing scope, certification preparation, supplier coordination, and delivery management. It is more appropriate to understand this as a rule change that has already landed at the standards level, while the detailed pace of market execution still requires continued observation.

Basis of this article and items that still need verification

This article is generated based on the user-provided news title, event date, and event summary. For developments of this kind, commonly relevant source types may include official announcements, releases from regulatory bodies, information from customs or trade authorities, industry association updates, standards organization documents, and reporting by authoritative media. No specific official source link was provided in the input, so the exact official link still needs to be verified on an ongoing basis. Observably, follow-up attention should remain on detailed implementation language, certification interpretation, bid document updates, industry feedback, and how companies carry the new requirements into actual compliance and delivery processes.