Lead-Free Reliability

SAC305 alloys vs. traditional SnPb: Higher melting point (217°C vs. 183°C) increases thermal stress. Accelerated testing shows 30% shorter fatigue life. Solutions: Doped alloys (SAC+Bi), optimized pad designs. Automotive qualification: 5,000 cycles (-40°C to +125°C). Tin whisker growth remains key concern. Compliance: RoHS 3 Directive 2015/863.