MATERIALS FOR PRINTED BOARDS AND OTHER INTERCONNECTING STRUCTURES - PART 4-14: SECTIONAL SPECIFICATION SET FOR PREPREG MATERIALS, UNCLAD (FOR THE MANUFACTURE OF MULTILAYER BOARDS) - EPOXIDE WOVEN E-GLASS PREPREG OF DEFINED FLAMMABILITY (VERTICAL BURNING TEST) FOR LEAD-FREE ASSEMBLY
International Electrotechnical Committee
FOREWORD
1 Scope
2 Normative references
3 Materials and construction
3.1 Reinforcement
3.2 Resin system
4 Properties
4.1 Properties related to the appearance of the prepreg
4.1.1 Dewetted areas (fish eyes)
4.1.2 Broken filaments
4.1.3 Distortion
4.1.4 Creases
4.1.5 Edge conditions
4.2 Properties related to B-stage prepreg
4.2.1 Resin content
4.2.2 Treated weight
4.2.3 Resin flow
4.2.4 Scaled flow thickness
4.2.5 Melting viscosity
4.2.6 Gel time
4.2.7 Volatile content
4.3 Properties related to prepreg after curing
4.3.1 Electric strength
4.3.2 Flammability
4.3.3 Relative permittivity and dissipation factor
4.3.4 Cured thickness
4.3.5 Glass transition temperature (Tg)
4.3.6 Decomposition temperature (Td)
4.3.7 Thermal resistance
4.3.8 Z-axis expansion
5 Delivery form
5.1 Rolls
5.2 Sheets
5.3 Cut panels
6 Quality assurance
6.1 Quality system
6.2 Responsibility for inspection
6.3 Qualification inspection
6.4 Quality conformance inspection
6.5 Certificate of conformance
6.6 Safety data sheet
7 Packaging and marking
8 Shelf life
9 Ordering information
Bibliography
Provides requirements for properties of prepreg that are mainly intended to be used as bonding sheets in connection with laminates according to IEC 61249-2-36 when manufacturing multilayer boards according to IEC 62326-4.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | TC 91 |
