BS 4393:1991
Current
The latest, up-to-date edition.
Specification for solderable tin or tin-lead coated wires for component terminations
Hardcopy , PDF
English
30-04-1991
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
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