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BS EN 61249-2-27:2013

BS EN 61249-2-27:2013

$142.49

Materials for printed boards and other interconnecting structures – Reinforced base materials clad and unclad. Bismaleimide/triazine modified with non-halogenated epoxide woven glass laminate sheets of defined flammability (vertical burning test), copper-clad

Published By Publication Date Number of Pages
BSI 2013 26
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This part of IEC 60684 gives the requirements for two types of heat-shrinkable, polyolefin sleeving, dual wall, not flame retarded with a nominal shrink ratio of 3:1.

This sleeving has been found suitable for use at temperatures of up to 100 °C.

These sleevings are normally supplied in colour black.

Since these types of sleevings cover a significantly large range of sizes and wall thicknesses, Tables A.1 and A.2 provide a guide to the range of sizes available. The actual size shall be agreed between the user and supplier.

Materials which conform to this specification meet established levels of performance. However, the selection of a material by a user for a specific application should be based on the actual requirements necessary for adequate performance in that application and not based on this specification alone.

PDF Catalog

PDF Pages PDF Title
6 English
CONTENTS
8 1 Scope
2 Normative references
3 Materials and construction
3.1 General
3.2 Resin system
9 3.3 Reinforcement
3.4 Metal foil
4 Internal marking
5 Electrical properties
Tables
Table 1 – Electrical properties
10 6 Non-electrical properties of the copper-clad laminate
6.1 Appearance of the copper-clad sheet
6.1.1 General
6.1.2 Indentations (pits and dents)
6.1.3 Wrinkles
6.1.4 Scratches
Table 2 – Indentations
11 6.1.5 Raised areas
6.1.6 Surface waviness
6.2 Appearance of the unclad face
6.3 Laminate thickness
Table 3 – Nominal thickness and tolerance of metal-clad laminate
12 6.4 Bow and twist
6.5 Properties related to the copper foil bond
6.6 Punching and machining
Table 4 – Bow and twist
Table 5 – Pull-off and peel strength
13 6.7 Dimensional stability
6.8 Sheet sizes
6.8.1 Typical sheet sizes
6.8.2 Tolerances for sheet sizes
6.9 Cut panels
6.9.1 Cut panel sizes
6.9.2 Size tolerances for cut panels
Table 6 – Dimensional stability
14 6.9.3 Rectangularity of cut panels
7 Non-electrical properties of the base material after complete removal of the copper foil
7.1 Appearance of the dielectric base material
Table 7 – Size tolerance for cut panels
Table 8 – Rectangularity of cut panels
15 7.2 Flexural strength
7.3 Flammability
7.4 Water absorption
Table 9 – Flexural strength
Table 10 – Flammability
16 7.5 Measling
7.6 Glass transition temperature and cure factor
8 Quality assurance
8.1 Quality system
Table 11 – Water absorption
Table 12 – Measling
Table 13 – Glass transition temperature and cure factor
17 8.2 Responsibility for inspection
8.3 Qualification inspection
8.4 Quality conformance inspection
8.5 Certificate of conformance
8.6 Safety data sheet
9 Packaging and marking
18 10 Ordering information
19 Annex A (informative) Engineering information
21 Annex B (informative) Common laminate constructions
Table B.1 – Thickness
22 Annex C (informative) Guideline for qualification and conformance inspection
Table C.1 – Qualification and conformance testing
23 Bibliography

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BS EN 61249-2-27:2013
$142.49