IEC 61249-2-6-2003 PDF

Full title and description

Materials for printed boards and other interconnecting structures - Part 2-6: Reinforced base materials, clad and unclad - Brominated epoxide non-woven/woven E-glass reinforced laminated sheets of defined flammability (vertical burning test), copper-clad (IEC 61249-2-6:2003). This international standard specifies requirements for copper-clad laminates based on brominated epoxide resin systems reinforced with non-woven and/or woven E‑glass, with defined flammability performance for use as printed‑board base materials.

Abstract

IEC 61249-2-6:2003 defines material construction, electrical and non‑electrical properties, dimensional tolerances and flammability classification (vertical burning test) for brominated‑epoxide, E‑glass reinforced copper‑clad laminate sheets. The document covers typical laminate thicknesses in the nominal range 0.80 mm to 1.70 mm and includes test methods, acceptance criteria and guidance needed for procurement and quality assurance of PCB base materials.

General information

• Status: Published / Valid (current edition).
• Publication date: 12 November 2003.
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 31.180 (Printed circuits and boards).
• Edition / version: Edition 1.0 (2003).
• Number of pages: 45 pages.

Bibliographic and edition details above are taken from the IEC publication record and recognized national/adoption listings.

Scope

The standard gives requirements for brominated‑epoxide, non‑woven and/or woven E‑glass reinforced laminated sheets that are copper‑clad, intended for use as base materials for printed boards and other interconnecting structures. It specifies applicable thickness ranges (nominally 0.80 mm to 1.70 mm), constructional requirements (resin system, reinforcement and copper foil), flammability performance defined by the vertical burning test, and the electrical, mechanical and environmental test methods used to qualify the material for PCB manufacture.

Key topics and requirements

• Resin system: brominated epoxide chemistry with fire‑retardant groups incorporated in the polymer matrix to meet defined flammability criteria.
• Reinforcement: non‑woven and/or woven E‑glass fiber reinforcements specified for mechanical and thermal stability.
• Metal foil: copper cladding for one or both faces with specified bond and foil properties.
• Dimensional and mechanical properties: laminate thickness tolerances (0.80–1.70 mm), bow and twist limits, punch/cut tolerances, and peel/pull strength requirements.
• Electrical performance: defined electrical tests and minimums for resistivity, dielectric strength and related parameters after environmental conditioning.
• Flammability and environmental tests: vertical burning test classification, water absorption, thermal stability (Tg guidance) and ageing/durability procedures.
• Quality, marking and documentation: qualification testing, certificate of conformity, internal marking, packaging and safety data sheet requirements.

These topic areas summarize the normative requirements and informative guidance contained in the standard.

Typical use and users

IEC 61249-2-6 is used by PCB material manufacturers, PCB fabricators, electronics OEMs, material procurement and quality assurance teams, and test laboratories. It is applied when specifying or qualifying brominated‑epoxide, E‑glass copper‑clad laminates for printed circuit board production where a defined flammability rating (vertical burning test) is required. The standard supports purchasing specifications, supplier audits and incoming material inspection.

Related standards

IEC 61249-2-6 forms part of the IEC 61249 series (materials for printed boards), and references related test and material standards such as IEC 61189‑2 (test methods for materials), IEC 61249‑5‑1 (copper foils), and other Part 2‑xx documents that describe different resin systems and constructions (for example Parts 2‑8, 2‑10, 2‑11, etc.). National and CENELEC adoptions (EN 61249‑2‑6) exist for regional harmonization.

Keywords

brominated epoxide, E‑glass, non‑woven, woven, copper‑clad laminate, printed circuit board material, vertical burning test, flammability rating, laminate thickness 0.80–1.70 mm, IEC 61249 series.

FAQ

Q: What is this standard?

A: IEC 61249-2-6:2003 is an international standard that specifies requirements for brominated‑epoxide, non‑woven/woven E‑glass reinforced, copper‑clad laminates with defined flammability for use as PCB base materials.

Q: What does it cover?

A: It covers material construction (resin, reinforcement, copper foil), dimensional and mechanical properties, electrical and environmental test requirements, flammability classification via the vertical burning test, and related quality and documentation items for laminates in the nominal thickness range 0.80–1.70 mm.

Q: Who typically uses it?

A: PCB substrate manufacturers, PCB fabricators and assemblers, OEM component specifiers, procurement and QA teams, and independent test laboratories use this standard for material selection, qualification and acceptance.

Q: Is it current or superseded?

A: The 2003 edition (Edition 1.0) is the published IEC edition; users should confirm status with their national standards body or the IEC webstore for any amendments or later consolidated editions before relying on the document for compliance or procurement.

Q: Is it part of a series?

A: Yes — IEC 61249 is a multipart series covering many reinforced and unreinforced base materials (Parts 2‑1 through 2‑xx and other parts) for printed boards and interconnecting structures; Part 2‑6 is the brominated‑epoxide, E‑glass, copper‑clad entry for the specified thickness range.

Q: What are the key keywords?

A: Key keywords include brominated epoxide, E‑glass, copper‑clad laminate, flammability, vertical burning test, PCB base material, laminate thickness 0.80–1.70 mm, and IEC 61249‑2‑6.