OPA320: OPA320AIDBVR Label shown MSL 1 instead of MSL 2 DC on body marking 1A not tally with label 18

Hi Grace, 

OPA320AIDBVR is rated MSL 2, not MSL1. This is not normal. It is possible that this may be counterfeit parts, but I am unable to identify based on the image.   

https://www.ti.com/materialcontent/en/report?pcid=250101&opn=OPA320AIDBVR

The question is where the part is purchased from. If the package is purchased from TI E-store or TI authorized distributors, you can contact the customer support team, and return the item, see the contact information below. If the item is purchased from unauthorized distributors, you have to contact to the seller. TI does not provide the support. 

https://education.ti.com/en/customer-support/support-worldwide

I am going to close this inquiry. If you have additional questions, please let us know. 

Best,

Raymond