PCBA检验规范分解.ppt

FOREWORD ;FOREWORD ;圖示 :沾錫角(接觸角)之衡量 ;2.3.1 良好焊錫性要求定義如下 : 1.沾錫角低於90度。 2.焊錫不存在縮錫( DEWETTING )與不沾錫( NON-WETTING )等不良焊錫。 3.可辨識出焊錫之接觸焊接面存在沾錫(WETTING)現象。;2.3.8 錫洞/針孔: 1.三倍以內放大鏡與目視可見之錫洞/針孔，不被接受。 2.錫洞/針孔不能貫穿過孔。 3.不能有縮錫與不沾錫等不良。;GENERAL INSPECTION CRITERIA;GENERAL INSPECTION CRITERIA;SMT INSPECTION CRITERIA;SMT INSPECTION CRITERIA;SMT INSPECTION CRITERIA;SMT INSPECTION CRITERIA;SMT INSPECTION CRITERIA;SMT INSPECTION CRITERIA;SMT INSPECTION CRITERIA;SMT INSPECTION CRITERIA;SMT INSPECTION CRITERIA;SMT INSPECTION CRITERIA;SMT INSPECTION CRITERIA;SMT INSPECTION CRITERIA;SMT INSPECTION CRITERIA;SMT INSPECTION CRITERIA;SMT INSPECTION CRITERIA;SMT INSPECTION CRITERIA;SMT INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;焊錫性工藝標準--DIP插件孔焊錫性檢驗圖示;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA;DIP INSPECTION CRITERIA