Quectel BC660K-GL Manual page 49

NB-IoT Module Series
BC660K-GL Hardware Design
15.8
±0.15
4.4
4.3
Pin 1
1.0
1.1
4.4
1.5 3.5
Figure 28: Bottom Dimension (Bottom View)
NOTE
The package warpage level of the module conforms to JEITA ED-7306 standard.
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