IEC 61249-4-14:2009
Current
The latest, up-to-date edition.
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
Hardcopy , PDF
English, English - French
26-05-2009
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
IEC 61249-4-14:2009 gives 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. Multilayer boards comprised of these materials are suitable for lead-free assembly processes. This material may also be used to bond other types of laminates. Prepreg according to this standard is of defined flammability (vertical burning test). The flammability rating on fully cured prepreg is achieved through the use of brominated fire retardants contained as an integral part of the polymeric structure. After curing of the prepreg according to the supplier's instructions, the glass transition temperature is defined to be 120 °C minimum.
| Committee |
TC 91
|
| DevelopmentNote |
Stability Date: 2020. (09/2017)
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
International Electrotechnical Committee
|
| Status |
Current
|
| Standards | Relationship |
| NF EN 61249-4-14 : 2014 | Identical |
| NEN EN IEC 61249-4-14 : 2009 | Identical |
| I.S. EN 61249-4-14:2009 | Identical |
| PN EN 61249-4-14 : 2009 | Identical |
| BS EN 61249-4-14:2009 | Identical |
| CEI EN 61249-4-14 : 2010 | Identical |
| EN 61249-4-14:2009 | Identical |
| DIN EN 61249-4-14:2009-12 | Identical |
| UNE-EN 61249-4-14:2009 | Identical |
Please Login or Create an Account so you can add users to your Multi user PDF Later.
Important note : All end users must be registered with an Account prior to user licenses being assigned.
Users cannot be edited or removed once added to your Multi user PDF.