STM32WB35CC datasheet(171/193 Pages) STMICROELECTRONICS

171 / 193 page

DS11929 Rev 11

171/193

STM32WB55xx STM32WB35xx

Package information

185

Figure 39. UFBGA129 recommended footprint

6.85

7.00

7.15

0.270

0.276

0.281

6.85

7.00

7.15

0.270

0.276

0.281

6.00

0.236

6.00

0.236

0.50

0.020

0.50

0.020

ddd

0.08

0.003

eee(4)

0.15

0.006

fff(5)

0.05

0.002

1. Values in inches are converted from mm and rounded to four decimal digits.

2. - UFBGA stands for Ultra Thin Profile Fine Pitch Ball Grid Array.



- Ultra thin profile: 0.50 < A ≤ 0.65mm / Fine pitch: e < 1.00mm pitch.



- The total profile height (Dim A) is measured from the seating plane to the top of the component



- The maximum total package height is calculated by the following methodology:



A Max = A1 Typ + A2 Typ + A4 Typ + √ (A1²+A2²+A4² tolerance values).

3. The typical balls diameters before mounting is 0.20 mm.

4. The tolerance of position that controls the location of the pattern of balls with respect to datum A and B.



For each ball there is a cylindrical tolerance zone eee perpendicular to datum C and located on true

position with respect to datum A and B as defined by e. The axis perpendicular to datum C of each ball

must lie within this tolerance zone.

5. The tolerance of position that controls the location of the balls within the matrix with respect to each other.



For each ball there is a cylindrical tolerance zone fff perpendicular to datum C and located on true position

as defined by e. The axis perpendicular to datum C of each ball must lie within this tolerance zone. Each

tolerance zone fff in the array is contained entirely in the respective zone eee above The axis of each ball

must lie simultaneously in both tolerance zones.

Table 100. UFBGA129 mechanical data (continued)

Symbol

millimeters

inches(1)

Min

Typ

Max

Min

Typ

Max

BGA_WLCSP_FT_V1

Dsm

Dpad

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