In the datasheet for this OPA313 on page 2 the OPA313 (SOT23-5) DBV package has a package marking as "SIF" but on page 21 this OPA313IDBVT (SOT-23) shows deice marking as "SIF". The part (OPA313IDBVT) we received is the SOT23-5 and has a marking of "SIE". So I believe page 2 of this datasheet is incorrect.