OPA2277: OPA2277UA/2K5

Hi Eric, 

Eric Lam said:

We found that the part marking of OPA2277UA/2K5 is OPA 2277UK but the spec showed that  OPA 2277UA

We do not produce OPA2277UK markings in OPA2277 op amp products, which are not on the list or TI E-store. 

https://www.ti.com/product/OPA2277#order-quality

If these products were purchased from TI E-store or TI authorized distributors, please contact the customer support center for questions.

We do not support any purchases that are made outside of the TI authorized distributors. 

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

If you have additional questions, please let us know. 

Best,

Raymond