STM1404 Package mechanical data
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Figure 30. QFN16 – 16-lead, quad, flat package, no lead, 3 x 3 mm, recommended
footprint
Note: Substrate pad should be tied to V
SS
.
Table 8. QFN16 – 16-lead, quad, flat package, no lead, 3 x 3 mm body size mechanical
data
Symb
mm inches
Typ Min Max Typ Min Max
A 0.90 0.80 1.00 0.035 0.032 0.039
A1 0.02 0.00 0.05 0.001 0.000 0.002
A3 0.20 – – 0.008 – –
b 0.25 0.18 0.30 0.010 0.007 0.012
D 3.00 2.90 3.10 0.118 0.114 0.122
D2 1.70 1.55 1.80 0.067 0.061 0.071
E 3.00 2.90 3.10 0.118 0.114 0.122
E2 1.70 1.55 1.80 0.067 0.061 0.071
e0.50– –0.020– –
K 0.20 – – 0.008 – –
L 0.40 0.30 0.50 0.016 0.012 0.020
ddd – 0.08 – – 0.003 –
Ch –0.33– –0.013–
N16 16
0.28
1.60
3.55
2.0
AI09126
