IEC 61189-2-801:2023

Overview

IEC 61189-2-801:2023 is an international standard published by the International Electrotechnical Commission (IEC) that specifies a reliable method for assessing the thermal conductivity of base materials used in electrical materials, printed boards, and other interconnection structures and assemblies. This standard outlines a test methodology that employs a screened-on carbon ink heating pattern to evaluate the thermal performance of a dielectric layer on a metal base plate-an important quality characteristic for materials used in high-performance electronic systems.

By providing a consistent thermal conductivity test method, IEC 61189-2-801:2023 enables manufacturers, laboratories, and quality assurance teams to compare materials objectively and ensure products meet critical safety and reliability requirements in electronic assemblies.

Key Topics

• Test Method Fundamentals:
  The standard details the use of a carbon ink heating element applied via screen printing onto the test specimen, creating a pattern used to evaluate heat flow through the dielectric layer.
• Specimen Preparation:
  Describes required specimen size, configuration, and preparation steps to ensure uniformity and repeatability in testing.
• Materials and Equipment:
  Lists instruments and consumables necessary for conducting the test, such as screen printing tools, carbon ink, thermocouples, hot plates, and data acquisition systems.
• Test Procedures:
  Outlines conditioning, test setup, calibration, step-by-step execution, and necessary environmental controls (temperature, humidity).
• Data Analysis and Reporting:
  Specifies requirements for recording, processing, and reporting test results, including calculation of averages, deviations, and detailed material identification.

Applications

The test methods laid out in IEC 61189-2-801:2023 hold significant value in several practical contexts:

• Quality Control for Printed Circuit Board (PCB) Manufacturers:
  Enables accurate benchmarking of dielectric and base materials to ensure consistent thermal management in final products, which is critical for device reliability, especially in high-power electronics.
• R&D and Material Evaluation:
  Assists engineers and developers in comparing new materials or technologies for heat dissipation and insulation performance within printed circuit board design and assembly.
• Supplier Qualification:
  Provides a recognized and repeatable method for vendors and OEMs to verify material compliance and make informed sourcing decisions.
• Certification and Compliance:
  Essential for third-party testing houses and laboratories to provide standardized certification of thermal performance, helping clients meet international market requirements.
• Failure Analysis:
  Useful for diagnosing and analyzing materials that may contribute to heat-related failures in electronic devices.

Related Standards

For a comprehensive approach to testing and qualification of electrical materials and assemblies, users may wish to consult:

• IEC 61189 Series:
  Encompasses a wide range of test methods for electrical materials, printed boards, and interconnections, addressing various performance characteristics.
• IEC 62899-202:
  Covers materials and methods relevant to conductive inks, which may complement testing and evaluation activities for printed electronics.
• General IEC and ISO Standards:
  Contribute further requirements and definitions relevant to electronics assembly and materials testing.

By observing IEC 61189-2-801:2023, organizations can ensure that thermal conductivity measurements are conducted with consistency, accuracy, and global recognition-supporting the development and quality assurance of reliable, high-performance electronic assemblies. For the latest updates and comprehensive details, always consult the current official IEC publication.