IEC 61249-2-45:2018

IEC 61249-2-45:2018 defines requirements for materials used in printed boards and other interconnecting structures, with a focus on reinforced base materials that are clad or unclad. It addresses non-halogenated epoxide non-woven/woven E-glass reinforced laminate sheets with thermal conductivity of 1,0 W/(m•K), defined flammability in the vertical burning test, and copper-clad versions intended for lead-free assembly. For engineering teams, laboratories, and procurement specialists, IEC 61249-2-45:2018 is relevant when evaluating material suitability, technical compliance, and documentation consistency in PCB-related workflows.

Purpose of IEC 61249-2-45:2018

The purpose of IEC 61249-2-45:2018 is to provide a technical reference for the classification and expected characteristics of specific laminate sheet materials used in printed board construction and related interconnecting structures. Its scope supports material selection, verification activities, and conformity assessment where thermal conductivity, flammability behavior, and copper-clad options for lead-free assembly are part of the engineering requirement. In practice, it helps align documented evaluation with procurement specifications, testing workflows, and quality workflows for board material approval.

Compliance applications of IEC 61249-2-45:2018

Organizations may use IEC 61249-2-45:2018 when reviewing laminate materials for product development, incoming inspection, supplier qualification, or laboratory evaluation of printed board substrates. It is especially relevant where non-halogenated construction, controlled burning performance, and compatibility with lead-free assembly processes influence technical assessment. The document may also support regulatory preparation and engineering documentation for electronic assemblies that rely on stable base-material performance, consistent manufacturing inputs, and traceable compliance reference data across design and production stages.

Benefits of IEC 61249-2-45:2018

Using IEC 61249-2-45:2018 can improve technical validation by giving teams a shared basis for comparing materials, documenting acceptance criteria, and reducing ambiguity in procurement and testing. It supports safety-related review through defined flammability expectations and helps maintain operational consistency when selecting materials for printed board applications. The reference is also useful for conformity assessment preparation, since it can streamline material traceability, supplier communication, and evidence gathering for compliance workflows and risk management activities.

• Supports specification review for reinforced laminate sheets used in printed boards and interconnecting structures
• Helps align material evaluation with thermal conductivity and vertical burning test expectations
• Useful for copper-clad material selection where lead-free assembly compatibility is needed
• Assists laboratories and compliance teams with documented technical assessment and verification activities