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eLibrary > BS EN IEC 60068-2-20:2021 Environmental testing - Tests. Test Ta and Tb: Test methods for solderability and resistance to soldering heat of devices with leads >

BS EN IEC 60068-2-20:2021 Environmental testing - Tests. Test Ta and Tb: Test methods for solderability and resistance to soldering heat of devices with leads, 2021

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BS EN IEC 60068-2-20:2021 Environmental testing - Tests. Test Ta and Tb: Test methods for solderability and resistance to soldering heat of devices with leads, 2021

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Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
English [Go to Page]
CONTENTS
FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
Figure 1 – Diagram of contact angle
4 Test Ta: Solderability of wire and tag terminations [Go to Page]
4.1 Objective and general description of the test [Go to Page]
4.1.1 Test methods
4.1.2 Specimen preparation
4.1.3 Initial measurements
4.1.4 Preconditioning
4.2 Method 1: Solder bath [Go to Page]
4.2.1 General
4.2.2 Description of the solder bath
4.2.3 Flux
4.2.4 Procedure
4.2.5 Test conditions
4.2.6 Final measurements and requirements
4.3 Method 2: Soldering iron at 350 °C [Go to Page]
4.3.1 General
4.3.2 Description of soldering iron
Table 1 – Solderability, solder bath method: Test severities (duration and temperature) [Go to Page]
[Go to Page]
4.3.3 Solder and flux
4.3.4 Procedure
Figure 2 – Position of soldering iron [Go to Page]
[Go to Page]
4.3.5 Final measurements and requirements
4.4 Information to be given in the relevant specification
5 Test Tb: Resistance to soldering heat [Go to Page]
5.1 Objective and general description of the test [Go to Page]
5.1.1 Test methods
5.1.2 Initial measurements
5.2 Method 1: Solder bath [Go to Page]
5.2.1 Description of the solder bath
5.2.2 Flux
5.2.3 Procedure
5.2.4 Test conditions
5.2.5 De-wetting
Table 2 – Resistance to soldering heat, solder bath method:Test severities (duration and temperature) [Go to Page]
5.3 Method 2: Soldering iron [Go to Page]
5.3.1 Description of soldering iron
5.3.2 Solder and flux
5.3.3 Procedure
5.4 Recovery
5.5 Final measurements and requirements
5.6 De-wetting (if required)
5.7 Information to be given in the relevant specification
Figure A.1 – Example of apparatus
Table B.1 – Colophony based flux compositions
Bibliography [Go to Page]

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BS EN IEC 60068-2-20:2021 Environmental testing - Tests. Test Ta and Tb: Test methods for solderability and resistance to soldering heat of devices with leads, 2021

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