Datasheet

Package information STM32F427xx STM32F429xx
218/239 DocID024030 Rev 10
Figure 96. UFBGA169 - 169-ball, 7 x 7 mm, 0.50 mm pitch, ultra fine pitch
ball grid array recommended footprint
Note: Non-solder mask defined (NSMD) pads are recommended.
4 to 6 mils solder paste screen printing process.
F 0.450 0.500 0.550 0.0177 0.0197 0.0217
ddd - - 0.100 - - 0.0039
eee - - 0.150 - - 0.0059
fff - - 0.050 - - 0.0020
1. Values in inches are converted from mm and rounded to 4 decimal digits.
Table 117. UFBGA169 recommended PCB design rules (0.5 mm pitch BGA)
Dimension Recommended values
Pitch 0.5
Dpad 0.27 mm
Dsm
0.35 mm typ. (depends on the soldermask
registration tolerance)
Solder paste 0.27 mm aperture diameter.
Table 116. UFBGA169 - 169-ball 7 x 7 mm 0.50 mm pitch, ultra fine pitch ball grid array
package mechanical data (continued)
Symbol
millimeters inches
(1)
Min Typ Max Min Typ Max
069
'VP
'SDG
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