4 ms·
Solder joints seem to be a major failure. That'd be mostly fatigue (thermal cycling) and the occasional case of tin whiskers.
by HPsquared 3y ago
Solder joints seem to be a major failure. That'd be mostly fatigue (thermal cycling) and the occasional case of tin whiskers.
- londons_explore 3y agoYes, but in turn the failure is because the thermal expansion coefficient of the board and component were insufficiently closely matched (when taking into account the elasticity of the board and component)
- giantrobot 3y agoLead-free solder is just shittier than leaded solder. You're not wrong about design but better solder would reduce the impact of mismatched thermal expansion properties.
- jandrese 3y agoBGAs and hot chips are a bad combo.
- toast0 3y agoRemoving lead from solder should reduce lead poisoning and environmental lead in general, which is good. Unfortunately, lead-free solder is objectively worse than leaded solder in terms of longevity of joints as well as requiring a greater working temperature. Things have gotten a lot better since introduction though.