Table 9
The scores of the DOE
Group no.
Parameters
Total pins for bridging
Total pins for floating pieces
Total pins for insufficient solder filling
Overall defects score
1
155–900
86
23
5
26.8
2
155–1050
48
29
13
22.8
3
155–1200
33
22
18
20.4
4
160–900
80
6
6
20
5
160–1050
9
14
21
13.5
6
160–1200
9
6
30
15.2
7
170–900
25
5
17
13.8
8
170–1050
10
4
16
8.8
9
170–1200
3
7
22
11.5
Group no.
Parameters
Total pins for bridging
Total pins for floating pieces
Total pins for insufficient solder filling
Overall defects score
1
155–900
86
23
5
26.8
2
155–1050
48
29
13
22.8
3
155–1200
33
22
18
20.4
4
160–900
80
6
6
20
5
160–1050
9
14
21
13.5
6
160–1200
9
6
30
15.2
7
170–900
25
5
17
13.8
8
170–1050
10
4
16
8.8
9
170–1200
3
7
22
11.5
Source:
Created by author
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