Datasheet

Package information STM32F031x4 STM32F031x6
90/106 DocID025743 Rev 6
7.4 UFQFPN28 package information
UFQFPN28 is a 28-lead, 4x4 mm, 0.5 mm pitch, ultra-thin fine-pitch quad flat package.
Figure 40. UFQFPN28 package outline
1. Drawing is not to scale.
Table 64. UFQFPN28 package mechanical data
(1)
Symbol
millimeters inches
Min Typ Max Min Typ Max
A 0.500 0.550 0.600 0.0197 0.0217 0.0236
A1 - 0.000 0.050 - 0.0000 0.0020
D 3.900 4.000 4.100 0.1535 0.1575 0.1614
D1 2.900 3.000 3.100 0.1142 0.1181 0.1220
E 3.900 4.000 4.100 0.1535 0.1575 0.1614
E1 2.900 3.000 3.100 0.1142 0.1181 0.1220
L 0.300 0.400 0.500 0.0118 0.0157 0.0197
L1 0.250 0.350 0.450 0.0098 0.0138 0.0177
T - 0.152 - - 0.0060 -
b 0.200 0.250 0.300 0.0079 0.0098 0.0118
e - 0.500 - - 0.0197 -
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