SIST EN 61249-2-13:2001

Overview

EN 61249-2-13:1999 is a sectional specification for reinforced base materials used in printed boards and other interconnecting structures. Specifically, it defines requirements for cyanate ester non‑woven aramid laminates that are copper‑clad and of a defined flammability, in thicknesses from 0.05 mm to 6.4 mm. The standard is part of the EN 61249 family addressing PCB base materials and is classified under ICS 31.180 (Printed circuits and boards). A Slovenian adoption (SIST EN 61249-2-13:2001) is identical to the EN version.

Key Topics

The document focuses on specification-level requirements for copper‑clad cyanate ester aramid laminates. Key technical topics include:

• Material scope and identification - defining the laminate type: cyanate ester resin reinforced with non‑woven aramid and copper cladding.
• Property requirements - sets performance requirements for the laminate’s properties (for example, mechanical, thermal, electrical and flammability characteristics) appropriate to printed board use.
• Defined flammability - establishes flammability classification or limits for safe use in electronics assemblies.
• Thickness range and formats - applies to clad laminates from 0.05 mm to 6.4 mm to cover thin build-ups and thicker base materials.
• Conformity and documentation - specification-style guidance for manufacturers and suppliers to declare compliance and provide material data.

(Note: the standard text provides sectional specification requirements; consult the published standard for detailed criteria and test methods.)

Applications

This standard is directly relevant where copper‑clad cyanate ester / non‑woven aramid laminates are selected:

• PCB manufacturers specifying base materials for rigid or rigid‑flex boards where controlled flammability and stable dielectric performance are needed.
• Material suppliers producing and certifying copper‑clad laminate sheets to ensure conformity with European specification sets.
• Design engineers and OEMs in telecoms, aerospace, defence and high‑reliability electronics evaluating laminate options for thermal, mechanical and fire-performance requirements.
• Compliance and procurement teams requiring standardized material declarations and traceability for regulatory or customer specifications.

Related standards

• Other parts of the EN 61249 series covering reinforced base materials, clad and unclad types.
• Standards and classification systems for printed circuits and boards (ICS 31.180) and industry material specifications used in PCB supply chains.

Keywords: EN 61249-2-13, cyanate ester, non-woven aramid, copper-clad laminate, printed circuit boards, PCB materials, flammability, reinforced base materials, thickness 0.05 mm–6.4 mm.