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2.3 Recommended Dimensions for User System Mount Pad

Figure 5 shows the recommended dimensions for the mount pad (footprint) for the user system with

an IC socket for an FP-80B package (IC149-080-012-B5: manufactured by YAMAICHI

ELECTRONICS Co., Ltd.). Note that the dimensions in figure 5 are somewhat different from those

of the actual chip's mount pad.

Unit: mm

0.80 – 0.05

0.50

0.80 x 23 = 18.40 – 0.1

0.80 x 15 = 12.00 – 0.1

21.20 (max.)

26.00 (min.)

15.20 (max.)

20.00 (min.)

0.80 – 0.05

+ 0.05

- 0.1

Figure 5 Recommended Dimensions for Mount Pad

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