IPC/JPCA-4921 Requirements for Printed Electronics Base Materials (Substrates)

IPC/JPCA-4921 Requirements for Printed Electronics Base Materials (Substrates)

Date of Publication: Jun 1, 2012, 26 Pages
US$85.00
IPC/JPCA-4921

This document provides comprehensive data to help users more easily determine both material capability and compatibility for flexible and rigid base dielectric materials for manufacture of printed electronics. It includes base material specification sheets that have been updated with the newest properties for the specification material types. It establishes the most current classification system, qualification and quality conformance requirements, including those raw material properties of particular interest to the printed electronics designer, fabricator, or user. This standard is a joint standard published by IPC and JPCA, Japan Electronics Packaging and Circuits Association. 26 pages.

TABLE OF CONTENTS

1 SCOPE
1.1 Statement of Scope 1
1.2 Purpose  1
1.3 Classification System  1
1.3.1 Nonspecific Designation 1
1.3.2 Specific Designation 1
1.4 Surface Treatments  3
1.5 Manufacturing Temperature Classification  3
1.6 Qualification  3
1.7 Quality Conformance  3
1.8 Procurement Documentation 3
1.9 Material Characteristics 3
1.9.1 As Agreed Upon Between User and Supplier
(AABUS)  4
1.10 New Materials  4
1.11 Interpretation ‘‘Shall’’  4
1.12 Presentation 4

2 APPLICABLE DOCUMENTS
2.1 IPC  4
2.2 American Society for Testing and Materials
(ASTM)  5
2.3 Japan Electronics Packaging and Circuits
Association  5
2.4 Underwriter Laboratories Standards  6
2.5 NCSL International  6
2.6 ISO  6
2.7 American Society of Mechanical Engineers  6
2.8 Technical Association of the Pulp and Paper
Industry (TAPPI)  6
2.9 British Standards Institution  6
2.10 International Electrotechnical Commission  6

3 GENERAL REQUIREMENTS
3.1 Terms and Definitions  6
3.2 Specification Sheets 6
3.3 Conflict  7
3.4 Material Requirements  7
3.4.1 Preferred Side for Printing 7
3.4.2 Sheet Material 7
3.4.3 Roll Material 7
3.4.4 Storage Conditions  7
3.4.5 Chemical Compliance  7
3.5 Visual Requirements 7
3.5.1 Marking 8
3.5.2 Wrinkles, Creases, Streaks, and Scratches  8
3.5.3 Inclusions  8
3.5.4 Voids  8
3.5.5 Holes, Tears, and Delamination  8
3.6 Dimensional Requirements  8
3.6.1 Sheet Width and Length 8
3.6.2 Roll Width  8
3.6.3 Roll Length 8
3.6.4 Thickness  8
3.7 Mechanical Requirements  9
3.7.1 Bend 9
3.7.2 Coefficient of Thermal Expansion  9
3.7.3 Dimensional Stability  9
3.7.4 Edge Strength  9
3.7.5 Initiation Tear Strength 9
3.7.6 Propagation Tear Strength 9
3.7.7 Tensile Strength, Elongation, and Modulus  9
3.8 Surface Requirements  9
3.8.1 Coefficient of Friction  9
3.8.2 Surface Energy  9
3.8.3 Surface Hardness 9
3.8.4 Surface Roughness  9
3.9 Optical Requirements  9
3.9.1 Color  9
3.9.2 Luminous Transmittance and Haze  9
3.9.3 Refractive Index  10
3.10 Chemical Requirements  10
3.10.1 Chemical Resistance 10
3.10.2 Oxygen Gas Transmission  10
3.10.3 Water Vapor Transmission  10
3.11 Electrical Requirements  10
3.11.1 Permittivity (Dielectric Constant)  10
3.11.2 Loss Tangent (Dissipation Factor)  10
3.11.3 Volume Resistivity (Damp Heat) 10
3.11.4 Surface Resistance (Damp Heat)  10
3.11.5 Dielectric Strength 10
3.12 Environmental Requirements  10
3.12.1 Fungus Resistance  10
3.12.2 Moisture Absorption 10
3.12.3 Flammability 10
3.12.4 Halogens  10
3.12.5 Relative Thermal Index (RTI) 11
3.13 Workmanship Requirements 11
3.14 Special Requirements  11
3.14.1 Outgassing 11
3.14.2 Organic Contamination 11

4 QUALITY ASSURANCE PROVISIONS
4.1 Responsibility for Inspection  11
4.2 Test Equipment and Inspection Facilities  11
4.3 Preparation of Samples 11
4.4 Standard Laboratory Conditions  11
4.5 Tolerances  11
4.6 Classification of Inspection  11
4.7 Material Inspection 12
4.8 Qualification Inspection  12
4.8.1 Characterization Testing  12
4.8.2 Frequency  13
4.9 Quality Conformance Inspection  13
4.9.1 Inspection of Product for Delivery  13
4.9.2 Sample Unit 13
4.9.3 Group A Inspection  13
4.9.4 Group B Inspection  13
4.10 Statistical Process Control (SPC)  14
4.10.1 Reduction of Quality Conformance Testing 14

5 PREPARATION FOR DELIVERY
5.1 Packaging 14

6 NOTES
6.1 Ordering Data  15
6.2 Chemical Resistance 15

Tables
Table 1-1 Base Material Family Designation  1
Table 1-2 Base Material Type Designation  2
Table 1-3 Base Structure Designation  2
Table 1-4 Base Reinforcement Type Designation 2
Table 1-5 Nominal Base Material Thickness Designation  3
Table 1-6 Surface Treatments  3
Table 3-1 Allowable Deviation from Nominal Thickness 8
Table 4-1 Test Method Frequency 12
Table 4-2 Sampling Plan for Group A Inspection for Sheet Goods  13
Table 4-3 Lot Sampling Plan for Group A Inspection for Roll Goods 13

 

RELATED PUBLICATIONS:

IPC/JPCA-2291 Design Guideline for Printed Electronics

IPC/JPCA-4591 Requirements for Printed Electronics Functional Conductive Materials



Date of Publication:
Jun 1, 2012
File Format:
Non-Printable CD-ROM & Print Copy
Number of Pages:
26 Pages
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