IEC 61249-2-31:2009

IEC 61249-2-31:2009 defines requirements for reinforced base materials used in printed boards and other interconnecting structures, specifically copper-clad woven E-glass laminate sheets with defined relative permittivity and flammability characteristics. For engineering, procurement, and compliance teams, this technical document helps identify a material class intended for consistent electrical and flame-related performance in board fabrication. As a primary reference for IEC 61249-2-31:2009, it supports documented evaluation, technical review, and material selection decisions where controlled dielectric behavior and laminate construction are relevant.

Overview of IEC 61249-2-31:2009

This edition addresses halogenated or unmodified resin systems used in reinforced, clad base materials for printed boards and related interconnecting structures. The scope suggests a focus on laminate sheets with defined relative permittivity at 1 GHz and flammability performance assessed by a vertical burning test. In practical terms, IEC 61249-2-31:2009 is useful when teams need a clear engineering specification for material qualification, product evaluation, and technical validation before using copper-clad laminate in manufacturing or design-controlled environments.

Compliance applications of IEC 61249-2-31:2009

Organizations may use this reference during laboratory evaluation, supplier review, and conformity assessment preparation for printed circuit board materials and related electronic assemblies. It is particularly relevant where material consistency, dielectric behavior, and flame performance must be documented for procurement or quality workflows. IEC 61249-2-31:2009 can also support internal testing workflows and technical compliance checks for board materials used in electrical equipment, helping teams align material declarations, inspection criteria, and acceptance reviews with a defined technical basis.

Importance of compliance with IEC 61249-2-31:2009

Compliance with IEC 61249-2-31:2009 can reduce risk in material selection and improve operational consistency across design, sourcing, and verification activities. By referencing a defined material category, organizations can strengthen safety review, testing consistency, and engineering validation for copper-clad laminate intended for printed boards and interconnecting structures. It also provides a useful compliance reference for procurement and supplier qualification, especially when documented evaluation is needed to support quality assurance and conformity assessment.

• Defined for copper-clad woven E-glass laminate sheets used in printed boards and related structures
• Relevant to material qualification where dielectric and flammability characteristics must be reviewed
• Useful for procurement specifications, supplier documentation, and engineering acceptance criteria
• Supports laboratory testing, conformity assessment preparation, and quality control workflows