SOM-1627-002.pdf - 第35页
(2) Inspection method Specify how many places should be inspected for polarity determina- tion. Select "4-Point Insp" or "2-Point Insp" as an inspection method. 4-Point Insp: Select this to inspect th…
• In the case of “BGA”, the center of the ball grids must be aligned
with the center of the mold.
Fig. 76
Sequence of Polarity Determination
Top View of Component
(Polarity Different by 180°)
Fig. 77
0102-001 32 AGQ01EGP
5.2 Parameters (B02-14)
(2) Inspection method
Specify how many places should be inspected for polarity determina-
tion.
Select "4-Point Insp" or "2-Point Insp" as an inspection method.
4-Point Insp: Select this to inspect the four places rotated in incre-
ments of 90°, based on the center of the component.
Select this for a square component.
Fig. 79
2-Point Insp: Select this to inspect the two places rotated by 180°,
based on the center of the component.
Select this for a rectangular component.
Fig. 80
Regarding the missing ball as a polarity
Top View of Component
Fig. 81
5.2 Parameters (B02-14)
Fig.78
Inspection method 4-Point Insp
0308-002 3 3 AGQ01EGP
Regarding the mark on the mold as a polarity
Top View of Component
Fig. 82
Regarding the cutout of the mold as a polarity
Top View of Component
Fig. 83
5.2 Parameters (B02-14)
0308-002 3 4 AGQ01EGP