SMT检验规范.pdf - 第6页

圖形 108 錫已溢流至零件腳肩部者拒收 .............................................................................................. D-9 圖形 109 TSOP&QFP 錫過多 , 拒收 .......................................................................…

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75 RMELF.BMP , 拒收....................................................................................................................C-4

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76 MELF 焊點尺寸圖.......................................................................................................................C-5

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77 SMELF2.BMP , 標準焊接..........................................................................................................C-5

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78 CHIP5.BMP , 標準......................................................................................................................C-6

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79 SBALL.BMP , 允收....................................................................................................................C-6

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80 SBALL1.BMP , 拒收..................................................................................................................C-6

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81 SOCKET PIN ㆖視圖 ................................................................................................................. D-1

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82 SOCKET PIN 側視圖 ................................................................................................................. D-1

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83 SOCKET PIN 前視圖 ................................................................................................................. D-1

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84 SOT PIN ㆖視圖........................................................................................................................ D-2

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85 SOT PIN 側視圖........................................................................................................................ D-2

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86 SOT PIN 前視圖........................................................................................................................ D-2

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87 SOIC PIN ㆖視圖....................................................................................................................... D-3

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88 SOIC PIN 側視圖....................................................................................................................... D-3

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89 SOIC PIN 前視圖....................................................................................................................... D-3

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90 A 大於 1/5W(拒收)..................................................................................................................... D-4

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91 A≦1/5W(允收)........................................................................................................................... D-4

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92 若超出錫墊，拒收.................................................................................................................... D-4

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93 短路(拒收).................................................................................................................................. D-4

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94 錫過多、錫薄與空焊(拒收)...................................................................................................... D-4

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95 圖形

94 之

45°之照片............................................................................................................... D-4

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96 CONNECTOR, 標準.................................................................................................................. D-5

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97 CONNECTOR, 標準.................................................................................................................. D-5

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98 CONNECTOR, 允收.................................................................................................................. D-5

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99 CONNECTOR, 拒收.................................................................................................................. D-6

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100 TSOP&QFP , 標準................................................................................................................... D-7

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101 TSOP&QFP , 標準................................................................................................................... D-7

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102 TSOP&QFP , 標準................................................................................................................... D-7

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103 TSOP&QFP , 標準................................................................................................................... D-8

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104 TSOP&QFP , 標準................................................................................................................... D-8

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105 焊墊錫少和腳的錫多, 允收................................................................................................... D-8

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106 TSOP&QFP 偏移, 拒收.......................................................................................................... D-9

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107 TSOP&QFP 空焊

, 拒收......................................................................................................... D-9

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108 錫已溢流至零件腳肩部者拒收.............................................................................................. D-9

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109 TSOP&QFP 錫過多, 拒收.................................................................................................... D-10

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110 TSOP&QFP 錫溢出

, 拒收................................................................................................... D-10

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111 G

ULL

ING

焊點尺寸圖......................................................................................................... D-11

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112 J-

LEAD

標準銲點 .......................................................................................................................E-1

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113 J-

LEAD

允收銲點 .......................................................................................................................E-1

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114 J-

LEAD

置放

, 拒收...................................................................................................................E-1

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115 PLCC 理想銲點.........................................................................................................................E-2

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116 PLCC 理想銲點.........................................................................................................................E-2

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117 PLCC 理想銲點.........................................................................................................................E-2

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118 PLCC 理想銲點.........................................................................................................................E-2

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119 PLCC 理想銲點.........................................................................................................................E-2

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120 PLCC 理想銲點.........................................................................................................................E-2

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121 J-型腳焊點尺寸圖 .....................................................................................................................E-4

Subject：

SMT In-Line Workman-ship Inspection Standard

A錫膏印刷規格

A-1 Chip 1608,2125,3216 錫膏印刷規格示範

標準(PREFERRED)：

圖形 1 CHIP 1608,2125,3216 錫膏印刷標準

1. 錫膏並無偏移。

2. 錫膏量，厚度均勻 8.31MILS。

3. 錫膏成型佳，無崩塌斷裂。

4. 錫膏覆蓋錫墊 90%以㆖。

允收(ACCEPTABLE)：

圖形 2 CHIP 1608,2125,3216 錫膏印刷允收

1. 鋼板的開孔有縮孔但錫膏仍有 85%覆蓋錫墊。

2. 錫量均勻。

3. 錫膏厚度於規格內。

4. 依此判定為允收。

拒收(NOT ACCEPTABLE):

圖形 3 CHIP 1608,2125,3216 錫膏印刷退貨

1. 錫膏量不足。

2. 兩點錫膏量不均。

3. 印刷偏移超過 20%錫墊。

4. 依此判定為退貨。

A-1