What is different between nrf52810 qcaa-r with qcaa-t ?

[Duykhanh]

Hi 
pls tell me what is diferent between nrf52810 qcaa-r with qcaa-t ?
thanks for reading 

[Kenneth]

t refer to "tray" and r refer to "reel". See Table 10:
https://www.nordicsemi.com/DocLib/Content/Product_Spec/nRF52810/latest/ordering_info?991#code_range 

Best regards,
Kenneth

[Duykhanh]

Thank you very much !!!!