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PC755 数据表(PDF) 39 Page - ATMEL Corporation |
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PC755 数据表(HTML) 39 Page - ATMEL Corporation |
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39 / 50 page ![]() 39 PC755/745 2138D–HIREL–06/03 Mechanical Dimensions of the PC755 PBGA Figure 26 provides the mechanical dimensions and bottom surface nomenclature of the PC755, 360 PBGA package. Figure 26. Mechanical Dimensions and Bottom Surface Nomenclature of the PC755 PBGA C NOTES: A. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. B. DIMENSIONS IN MILLIMETERS. C. TOP SIDE A1 CORNER INDEX IS A METALIZED FEATURE WITH VARIOUS SHAPES. BOTTOM SIDE A1 CORNER IS DESIGNATED WITH A BALL MISSING FROM THE ARRAY. 0.2 B C 360X D 2X A1 CORNER E e 0.2 2X B A 1 2345678 9 10 111213141516 A B C D E F G H J K L M N P R T A 0.3 C 0.15 b A A1 A2 0.15 C 171819 U W V M Millimeters DIM Min Max A 2.22 2.77 A1 0.50 0.70 A2 1.00 1.20 b 0.60 0.90 D 25.00 BSC E 25.00 BSC e 1.27 BSC |
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