Journal
INTERNATIONAL JOURNAL OF FATIGUE
Volume 61, Issue -, Pages 264-270Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2013.10.021
Keywords
Solder joint; Cracking energy density; Mechanical fatigue test; Finite element method; Fatigue failure
Funding
- LG Innotek
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Solder joints between semiconductors and a printed circuit board may fail due to temperature change or vibration. To assess the durability of solder joints a mechanical fatigue test was conducted instead of a thermal cycling test, and a resistance change was monitored to detect a failure at real time. Fatigue tests were conducted for five different semiconductors at three different frequencies, temperatures and displacements, and a fatigue life prediction equation with consideration of frequency, temperature and cracking energy density was proposed. It was shown that all the fatigue test data could be represented appropriately by the prediction equation. (C) 2013 Elsevier Ltd. All rights reserved.
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