Root-Cause Microstructural Failure Analysis of Intermetallic Compound Fatigue and Crack Propagation in Electronic Solder Assemblies
In modern microelectronics manufacturing—spanning automotive Electronic Control Units (ECUs), 5G telecommunications infrastructure, and aerospace avionics—solder joint structural integrity directly dictates field reliability. Transitioning to lead-free solder alloys (SAC305, SAC405) under RoHS environmental mandates has introduced heightened susceptibility to intermetallic compound (IMC) embrittlement, thermal fatigue micro-cracking, and electromigration voiding. Failure of a single BGA solder sphere […]