무효 완화 기술

Solder voids in BGA joints (>15% 면적) 손상 열전도율 . 주요 솔루션 : 진공 반사 챔버 달성<1kPa pressure reduce voids to 3%. Solder paste additives modify outgassing behavior. Stencil step designs control paste volume within ±5%. Pre-reflow baking (125°C/2hrs) removes moisture. X-ray analysis quantifies void distribution per IPC-7095C. Automotive standards enforce <5% voiding for ADAS modules. Emerging tech: Ultrasonic vibration during reflow disrupts gas entrapment.