Pin 1 Indicator

Document created by Miroslav B Employee on Jan 3, 2017
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MEMS sensors in LGA package usually have “pin 1 indicator” to help properly detect pin number one from bottom side.
The pin 1 indicator could be cut corner of pin number one or separate object (dot, triangle, …) close to pin 1.
In case the pin 1 indicator is separate object, the indicator should be left unconnected during soldering.
For details please check the device datasheet.
Hera are several examples:

Pin 1 Indicator Examples