INA301: What is the difference between INA301A2IDGKR and INA301A2QDGKRQ1

The INA301-Q1 has the paperwork to prove that it is AEC-Q100 qualified.

If that qualification is not needed, these two devices are replacements for each other.

Thank you for your help and support

Hangjie, 

Clemens is correct here. Any device bearing the "Q1" as part of its part number falls under our automotive catalog and has additional documentation for AEC-Q100, as well as functional safety documentation.