SMD code in through hole component?

[jesuscf]

Yesterday I received some parts from DigiKey.  One of the parts I ordered is a 4.096V voltage reference in a TO-92 package, the LM4040, originally made by National Semiconductors.  As you probably know,  National Semiconductors was acquired recently by TI.  The device markings when the part was made by National Semiconductor are along the lines of "4040A1Z4.1".  Now that the part is made by TI the markings says "NFD41I".  After googling this mysterious code, it turned out that it is a SMD code (I think) for TI part number LM4040D41ILPR.  Nowhere in the markings the "4040" is printed, although there seems to be plenty of space for printing in the TO-92 package.  Anybody knows if this is this normal, given that the part I bought is not a SMD?  From the datasheet it seems that TI is using this cryptic markings for all their LM4040 devices, SMD or not.

[tautech]

Grab the datasheet and check "Device marking".

[jesuscf]

Grab the datasheet and check "Device marking".

How is this answering my question?  Also, read the last sentence of my post.

[tautech]

Grab the datasheet and check "Device marking".

How is this answering my question?  Also, read the last sentence of my post.

So before you ordered you had the datasheet and knew how the part should be marked, right ?

Rather than use Google why didn't you get and link the datasheet in this thread ?
Google search for LM4040 brings up this as the first hit:
http://www.ti.com/lit/ds/symlink/lm4040-n.pdf
Pages 44-48 has the package markings for TO92 and indeed none match what you have received.

The only answer to your question without spending lots of time will be from Digikey......your supplier.
They need email you the datasheet that proves the part they provided is correct.

[jesuscf]

Grab the datasheet and check "Device marking".

How is this answering my question?  Also, read the last sentence of my post.

So before you ordered you had the datasheet and knew how the part should be marked, right ?

Rather than use Google why didn't you get and link the datasheet in this thread ?
Google search for LM4040 brings up this as the first hit:
http://www.ti.com/lit/ds/symlink/lm4040-n.pdf
Pages 44-48 has the package markings for TO92 and indeed none match what you have received.

The only answer to your question without spending lots of time will be from Digikey......your supplier.
They need email you the datasheet that proves the part they provided is correct.

Allow me to explain again with fewer and simpler words so you can understand: marking used to be 4040A1Z4.1; now it is NFD41I.  Is it a new trend to put SMT markings in THT parts even though there is enough space to write a sentence?

[tautech]

Is it a new trend to put SMT markings in THT parts even though there is enough space to write a sentence?

Not in my experience, contact Digikey and/or TI for further explanation.

As I hoped you might've taken on from my first reply, the manufacturer's datasheet for any product is the bible you must work with....unless there's a later version that's not obvious to find. Check TI's and Digikey's website.
Send them both emails.......they've both got customer support staff.......you're their customer. 

Report back your findings so we can all hope to learn something new or not.