本研究主要針對DC-DC模組電源的自動焊錫製程，使用失效模式與效應分析方法，探討自動焊錫製程潛在的失效模式，並提出建議改善措施，避免產生不良。本研究使用失效模式與效應分析方法分析後，找出其中五項潛在高風險失效模式，其風險優先指數高達100至250。經失效模式與效應分析小組成員提出改善建議後，進行改善，再重新進行效應分析，已經將風險優先指數降低到4至20，可見此分析方法有效協助DC-DC模組電源廠找出潛在問題，進行改善以提升產品品質。

This research studies Automatic Soldering Process of DC-DC power module. Failure Mode and Effects Analysis method is applied to identify all potential failure modes in Automatic Soldering Process. Failure modes are prioritized according to their severity, occurrence and detection ratings. Five highest-priority failure modes are chosen, and recommended actions are identified to eliminate or reduce these failures. Research results show that Failure Mode and Effects Analysis is an effective method to improve product quality in Automatic Soldering Process of DC-DC power module.