UL 746F
Standard for Polymeric Materials - Flexible Dielectric Film Materials for Use in Printed-Wiring Boards and Flexible Materials Interconnect Constructions

DETAILS
Edition Number:2SCC Approved:--
Edition Date:2012-01-13DOD Approved: --
Price Code:CANSI Approved: 2016-02-22
Type:ulstd

  • SCOPE

    1 Scope

    1.1 Flexible materials shall be defined as films or materials exhibiting flexible properties.

    1.2 These requirements cover short term and long term test procedures to be used for the evaluation of flexible material, film, base material, conductor adhesive material, bonding film, cover lay, and other thin film materials used for parts intended for specific applications in end products.

    1.3 Together with the Standards mentioned in the Supplementary Test Procedures, Section 6, these requirements provide data with respect to the physical, electrical, flammability, thermal, and other properties of the materials under consideration and are intended to provide guidance to the material manufacturer, the fabricator, the end product manufacturer, safety engineers and other interested parties.

    1.4 Compliance with these requirements does not indicate the product is acceptable for use as a component of an end product without further evaluation.

    1.5 These requirements do not apply to the evaluation of rigid industrial laminates having a thickness greater than 0.25 mm (0.010 inch). For materials with thicknesses greater than 0.25 mm refer to the Standard for Polymeric Materials – Industrial Laminates, Filament Wound Tubing, Vulcanized Fibre, and Materials Used in Printed Wiring Boards, UL 746E.

  • TABLE OF CONTENTS
    Expand All

    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 Abbreviations
          • 3 Units of Measurement
          • 4 Measurement Accuracy and Testing Conditions
          • 5 References
          • 6 Supplementary Test Procedures
          • 7 Glossary
        • CONSTRUCTION
          • 8 Flexible Dielectric Material Test Programs and Sample Requirements
            • 8.1 General
            • 8.2 Direct support requirements (DSR)
            • 8.3 Polyimide ANSI-like program
            • 8.4 Base materials (Dielectric film material)
            • 8.5 Conductor adhesives and conductors
            • 8.6 Bonding film (supported and unsupported) and internal bonding materials
            • 8.7 Coverlay (coverlayer, coverfilm and covercoat)
            • 8.8 Flexible material combinations and flexible mass laminate
        • PERFORMANCE
          • 9 Short Term Performance Profile Tests
          • 10 Long Term Thermal Aging Tests
          • 11 Flammability Tests
          • 12 Thermal Stress Test
            • 12.1 Purpose
            • 12.2 Compliance criteria
            • 12.3 Test specimens
            • 12.4 Test apparatus and material
            • 12.5 Procedure
            • 12.6 Data collection
          • 13 Delamination Test
            • 13.1 Purpose
            • 13.2 Compliance criteria
            • 13.3 Test specimens
            • 13.4 Apparatus or material
            • 13.5 Procedure
            • 13.6 Data collection
          • 14 Bond Strength Test
            • 14.1 Purpose
            • 14.2 Compliance criteria
            • 14.3 Test samples
            • 14.4 Apparatus or material
            • 14.5 Procedure
            • 14.6 Data collection
          • 15 Ambient-bend Test
            • 15.1 Purpose
            • 15.2 Compliance criteria
            • 15.3 Test specimens
            • 15.4 Apparatus or material
            • 15.5 Procedure
            • 15.6 Data collection
          • 16 Cold-Bend Test
            • 16.1 Purpose
            • 16.2 Compliance criteria
            • 16.3 Test specimens
            • 16.4 Apparatus or material
            • 16.5 Procedure
            • 16.6 Data collection
          • 17 Repeated Flexing Test
            • 17.1 Purpose
            • 17.2 Compliance criteria
            • 17.3 Test specimens
            • 17.4 Apparatus or material
            • 17.5 Procedure
            • 17.6 Data collection
          • 18 Coverlay Lamination Test
            • 18.1 Purpose
            • 18.2 Compliance criteria
            • 18.3 Test samples
            • 18.4 Apparatus or material
            • 18.5 Procedure
            • 18.6 Data collection
        • MARKINGS
          • 19 Details
    • FOLLOW-UP INSPECTION