Solder joint fatigue occurs by low cycle fatigue, driven by the mismatch of the coefficients of thermal expansion (CTE).

NPL has considerable experience in designing and testing circuit assemblies to discover the weak links in interconnect design.

We have cycling chambers capable of thermal profiles between -55 and 150 °C with ramp speeds of up to 10 °C per minute.

Common applications involved the acceleration of Thermal Coefficient of Expansion (TCE) induced failures:

• Solder joint cracking
• Adhesive loss of glob tops and underfills
• Delamination in multilayer boards and modules

Contact

Customer Service tel: +44 20 8943 8681
E-mail: materials_enquiries@npl.co.uk