A Second-Level SAC Solder-Joint Fatigue-Life Prediction Methodology

摘要

An acceleration model is developed for relating existing second-level fatigue-life data of tin–silver–copper solder joints to untested environments. The acceleration model retains the familiar canonical form of the Norris–Landzberg equation. Model parameters are obtained through calibration with an extensive set of published empirical data. The model will find use in making rapid assessments of a product''''s potential solder-joint field life based on accelerated product tests.