BS 4393:1991
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Specification for solderable tin or tin-lead coated wires for component terminations
Hardcopy , PDF
English
30-04-1991
22-05-2026
Committees responsible
Foreword
Specification
1. Scope
2. Definitions
3. Materials
4. Solderability
5. Dimensions and tolerances
6. Bend test for robustness of termination
7. Elongation
8. Bend test for coating adhesion
9. Sampling
10. Packaging and labelling
Appendices
A. Information to be supplied by the purchaser
B. Methods for use in cases of dispute for the
determination of the thickness of tin and tin-lead
coating and undercoat
C. Method for use in cases of dispute for the
determination of the composition of tin and tin-lead
coatings by atomic absorption spectrophotometry
D. Method for the detection of lead in tin and tin-lead
coatings
E. Method for bend test
F. Guidance notes to aid selection of suitable basis
wire and coatings for component terminations
Tables
1. Composition of the preferred tin or tin-lead
solderable coatings
2. Average thickness for solderable coating
3. Density of tin-lead alloys
4. Calibration solutions
Figures
1. Rotor head for bend tester
2. Arrangement of bend test apparatus
Requirements for solderability, mechanical properties, materials of manufacture, etc., for wires intended for component leads in the electronics industry, where solderability is a major criterion. It deals with wire in a range of materials, in the size range 0.25 mm to 1.20 mm.
| Committee |
EPL/501
|
| DevelopmentNote |
Supersedes 88/45505 DC, 97/706634 DC and BS 4393(1969) (08/2005) Reviewed and confirmed by BSI, January 2011. (12/2010)
|
| DocumentType |
Standard
|
| Pages |
20
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
| Supersedes |
Withdrawn:This standard is no longer used
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| BS 5411-12:1981 | Methods of test for metallic and related coatings. Beta backscatter method for measurement of thickness |
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| BS 3075:1976 | Specification for nickel and nickel alloys: wire |
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| BS 2873:1969 | Specification for copper and copper alloys. Wire |
| BS 700-3:1982 | Graduated pipettes Specification for blow-out pipettes |
| BS 4545:1970 | Methods for mechanical testing of steel wire |
| BS 2011-2.1T:1981 | Environmental testing. Tests Test T. Soldering |
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