[Home](/)/[Resources](/resources)/How to build a CE technical file Technical fileTemplate # How to Build a CE Technical File (Template + Structure) The CE technical file is the evidence package that justifies your CE mark. It is not a folder of PDFs—it is a structured chain of reasoning connecting your product to applicable requirements through evidence. This guide provides a template structure and best practices for building an review-ready technical file. Copy Link[Share on WhatsApp](https://wa.me/?text=https%3A%2F%2Fkrono-labs.com%2Fguides%2Fhow-to-build-ce-technical-file) Problem ## The technical file tells your compliance story Many teams treat the technical file as a dumping ground for test reports and drawings. They collect documents as they arrive, drop them in a folder, and assume compliance is documented. This is a mistake. The technical file is not a collection of documents—it is a chain of reasoning. A strong technical file tells a story: this is the product, these are the risks, these laws apply, these standards were used, this evidence supports the claim, and this signed declaration matches the product that actually ships. If the documents describe different product revisions, cite outdated standards, or fail to connect evidence to requirements, the file becomes fragile under scrutiny. The pain point is not collecting the documents. The pain point is structuring them into a coherent evidence package that can survive an audit. This requires planning from the start, not after testing is complete. Requirements ## Essential technical file sections ### Product identity Model numbers, variants, firmware versions, photos, intended use, and operating environment. Everything needed to uniquely identify the product. ### Legislation scope List of applicable directives and regulations with rationale for why each applies. Essential requirements mapping showing how each requirement is addressed. ### Standards list Complete list of harmonised standards applied, including reference numbers, versions, amendments, and confirmation they are current in the Official Journal. ### Risk assessment Systematic hazard identification, risk evaluation, control implementation, residual risk assessment, and verification evidence linking controls to test data. ### Test evidence All test reports from accredited laboratories: EMC, radio, safety, RoHS, battery, environmental, and any internal verification records. ### Design records Schematics, PCB files, enclosure drawings, BOM with RoHS-relevant components identified, manufacturing instructions, and quality controls. ### User materials User instructions, safety warnings, installation guides, label artwork, packaging artwork, and CE mark placement documentation. ### Supplier evidence Supplier declarations, component certificates, material statements, battery documentation, and critical component datasheets. ### EU Declaration of Conformity Signed declaration listing all applicable directives, harmonised standards, and conformity assessment procedures used. ### Change control Process for how future hardware, firmware, supplier, or labelling changes trigger compliance review and documentation updates. Process ## Organization best practices ### Use consistent naming Use consistent file naming conventions that include version numbers and dates. This makes traceability and version control much easier. ### Cross-reference everything Every document should reference related documents. Test reports should reference the product version they tested. Risk assessment should reference test evidence. ### Keep it version-controlled Use a version control system for all documentation. This provides an audit trail of when changes were made and why. ### Separate evidence from analysis Keep raw evidence (test reports, datasheets) separate from analysis documents (risk assessment, essential requirements matrix) for easier review. Structure ## Building the file as evidence arrives The fastest teams build the technical file incrementally as evidence is created, not as a final assembly task. 01 During design: Create the product description and start the legislation scope document 02 During engineering: Run risk assessment in parallel and document design decisions 03 During procurement: Collect supplier declarations and material statements as components are sourced 04 During testing: Drop test reports into the file as soon as they are received, noting the product version tested 05 Before sign-off: Conduct internal review to ensure all evidence is consistent and complete 06 At launch: Freeze the file version that corresponds to the shipping product ## Learn this properly, not just for one product In-depth courses and books that teach the process — not a one-off answer you'll need to look up again next time. [Start the course — $149](/courses/01-ce-marking-for-electronics-engineers)[Free Compliance Roadmap](/platform/new) [Prefer to read? Get the book — $24.99](/books/01-ce-marking-for-electronics-engineers) ## Frequently asked questions ### Do I need to submit the CE technical file to anyone? No. The technical file is compiled and retained by the manufacturer. It is not submitted for approval. Market surveillance authorities can request it at any time, so it must be available and complete. ### Can the technical file be electronic? Yes. Electronic documentation is acceptable and increasingly common. However, it must be easily accessible, searchable, and producible on request to authorities. ### How detailed must the technical file be? The file must be sufficiently detailed to demonstrate compliance to a competent authority. This means complete test reports, thorough risk assessment, and clear traceability between requirements and evidence. ### What happens if I change my product after CE marking? Changes that affect compliance require updating the technical file and potentially re-testing. Your change control process should define what types of changes trigger compliance review. [ Map your product, free Every standard, document, and test that applies — free, no account required. Start mapping](/platform/new)[ Want an expert to handle your compliance for you? One consultant from Krono's compliance team takes your product from requirements to legal sale, with a fixed quote before any work starts. See compliance services](/services) Learn this properly In-depth course that teaches the full process, not just this one answer. [Start the course — $149](/courses/01-ce-marking-for-electronics-engineers)[Prefer to read? Get the book — $24.99](/books/01-ce-marking-for-electronics-engineers) Related guides * [Complete CE documentation bundleA deep guide to the complete CE documentation bundle: Declaration of Conformity, technical file, risk assessment, test evidence…](/guides/complete-ce-documentation-bundle) * [Technical documentation for CE markingComplete guide to CE technical documentation: required elements, file structure, evidence requirements, and how to build an rev…](/guides/technical-documentation-for-ce-marking) * [Risk assessment for CEComplete guide to CE risk assessment for hardware products: hazard identification, risk evaluation, control implementation, and…](/guides/risk-assessment-for-ce) * [CE marking checklist for startupsA practical CE marking checklist for hardware startups: identify directives, plan testing, build the technical file, prepare th…](/guides/ce-marking-checklist-for-startups) Educational resource only. CE responsibility remains with the manufacturer or authorised representative. Verify current law, standards, and product-specific evidence before signing.