M41T66 Datasheet, PDF (29/33 Pages) STMicroelectronics – Serial access real-time clock with alarms

M41T66
Package mechanical data
Table 14.
Symb
A
A1
A3
b
D
D2
E
E2
e
K
L
ddd
Ch
N
QFN16 – 16-lead, quad, flat package, no lead, 3 x 3 mm body size, mech. data
mm
inches
Typ
Min
Max
Typ
Min
Max
0.90
0.80
1.00
0.035
0.032
0.039
0.02
0.00
0.05
0.001
0.000
0.002
0.20
–
–
0.008
–
–
0.25
0.18
0.30
0.010
0.007
0.012
3.00
2.90
3.10
0.118
0.114
0.122
1.70
1.55
1.80
0.067
0.061
0.071
3.00
2.90
3.10
0.118
0.114
0.122
1.70
1.55
1.80
0.067
0.061
0.071
0.50
–
–
0.020
–
–
0.20
–
–
0.008
–
–
0.40
0.30
0.50
0.016
0.012
0.020
–
0.08
–
–
0.003
–
–
0.33
–
–
0.013
–
16
16
Figure 18. QFN16 – 16-lead, quad, flat package, no lead, 3 x 3 mm, recommended
footprint


!)
1. Dimensions shown are in millimeters (mm).


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