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BS EN 62137-1-5:2009

Current
Current

The latest, up-to-date edition.

Surface mounting technology. Environmental and endurance test methods for surface mount solder joints Mechanical shear fatigue test
Published date

31-07-2009

IEC 62137-1-5:2009 applies to area array packages, such as BGA. This test method is designed to evaluate the fatigue life of the solder joints between component leads and lands on a substrate as shown in Figure 1. A temperature cyclic approach is generally used to evaluate the reliability of solder joints. Another method is to mechanically cycle the solder joints to shorten the testing time rather than to produce the strains by changing temperatures. The methodology is the imposition of shear deformation on the solder joints by mechanical displacement instead of relative displacement generated by CTE (coefficient of thermal expansion) mismatch, as shown in Figure 2. In place of the temperature cycle test, the mechanical shear fatigue predicts the reliability of the solder joints under repeated temperature change conditions by mechanically cycling the solder joints. In this test method, the evaluation requires first to mount the surface mount component on the substrate by reflow soldering, then cyclic mechanical shear deformation is applied to the solder joints until fracture of the solder joints occurs. The properties of the solder joints (for example solder alloy, substrate, mounted device or design, etc.) are evaluated to assist in improving the strength of the solder joints.

Committee
EPL/501
DocumentType
Standard
PublisherName
British Standards Institution
Status
Current

Standards Relationship
EN 62137-1-5:2009 Identical
IEC 62137-1-5:2009 Identical

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EN 61190-1-3:2007/A1:2010 ATTACHMENT MATERIALS FOR ELECTRONIC ASSEMBLY - PART 1-3: REQUIREMENTS FOR ELECTRONIC GRADE SOLDER ALLOYS AND FLUXED AND NON-FLUXED SOLID SOLDER FOR ELECTRONIC SOLDERING APPLICATIONS
EN 61190-1-2:2014 Attachment materials for electronic assembly - Part 1-2: Requirements for soldering pastes for high-quality interconnects in electronics assembly
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IEC 61190-1-3:2007+AMD1:2010 CSV Attachment materials for electronic assembly - Part 1-3: Requirements for electronic grade solder alloys and fluxed and non-fluxed solid solders for electronic soldering applications

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