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Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
BS EN 60749-21 - SEMICONDUCTOR DEVICES - MECHANICAL AND CLIMATIC TEST METHODS - PART 21: SOLDERABILITY
Hardcopy , PDF
08-31-2011
English
1 Scope
2 Test apparatus
2.1 Solder bath
2.2 Dipping device
2.3 Optical equipment
2.4 Steam ageing equipment
2.5 Lighting equipment
2.6 Materials
2.6.1 Flux
2.6.2 Solder
2.7 SMD reflow equipment
2.7.1 Stencil or screen
2.7.2 Rubber squeegee or metal spatula
2.7.3 Test substrate
2.7.4 Solder paste
2.7.5 Reflow equipment
2.7.6 Flux removal solvent
3 Procedure
3.1 Lead-free backward compatibility
3.2 Preconditioning
3.2.1 Preconditioning by steam ageing
3.2.2 Preconditioning by high temperature storage
3.3 Procedure for dip and look solderability testing
3.3.1 Solder dip conditions
3.3.2 Procedure
3.4 Procedure for simulated board mounting reflow
solderability testing of SMDs
3.4.1 Test equipment set-up
3.4.2 Specimen preparation and surface condition
3.4.3 Visual inspection
4 Summary
Bibliography
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