PC7447 datasheet(49/66 Pages) ATMEL

49 / 66 page

PC7457/47 [Preliminary]

5345B–HIREL–02/04

Mechanical Dimensions for the PC7457, 483 CBGA

Figure 25 provides the mechanical dimensions and bottom surface nomenclature for the PC7457, 483 CBGA package.

Figure 29. Mechanical Dimensions and Bottom Surface Nomenclature for the PC7457, 483 CBGA Package

Notes:

1. Dimensioning and tolerancing per ASME Y14.5M, 1994

2. Dimensions in millimeters

3. Top side A1 corner index is a metallized feature with various shapes. Bottom side. A1 corner is designated with a ball miss-

ing from the array

483X

0.3

0.15

123456 78 9 10111213141516 1718 1920 21 22

Capacitor Region

0.15 A

0.35 A

Millimeters

DIM

MIN

MAX

2.72

3.20

0.80

1.10

1.30

–

0.6

0.82

0.93

29 BSC

–

12.5

8.5

–

8.4

10.9

11.1

1.27 BSC

29 BSC

–

12.5

8.5

–

8.4

9.55

9.75

0.2

A1 CORNER

0.2

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