M4T28-BR12SH1 - meaning of package markings?

[TVinh.1]

We have the goods part number: M4T28-BR12SH1.

On the goods have the number: 9917W. Is it the lot number or other meaning?

I hope to have your consult because our technician had different ideas on this number.

[Peter BENSCH]

Welcome, @TVinh.1​, to the community!

9917W (certainly on the first line) is internal information. Only lines 2 to 6 are relevant for the user:

• M4T28-BR12SH1
• TIMEKEEPER®
• SNAPHAT®
• CONTAINS LITHIUM CELL
• aaa bb YWW

The last line 6 contains again some internal informaton (aaa bb) and the date code in the form YWW, i.e. the last digit of the production year and the calendar week.

Unfortunately, it is not possible to identify directly from the component the decade in which it was manufactured, as the M4T28-BR12SH has been around since 1999. A "1" could therefore stand for 2001, 2011 or 2021, for example. More precise information can only be found on the label of the packaging with which the part was delivered.

Does it answer your question?

Regards

/Peter

[TymerTopCat]

Date code on M4T28-BR12 SnapHat Timekeeper. I just received 5 pieces and we are testing a prototype.

I understand historically there was a 3 digit code, but the ones I received have 4 digits not three.

The sixth line: MYS 99 2405

Can you help.

-Russ

[TVinh.1]

Hello Peter,

Thank you very much for your immediate consultation. This is very useful information to us.

Thank you.

Vinh

[Peter BENSCH]

You're always welcome, I'm glad to have helped you.

If the problem is solved, please mark this thread as answered by selecting Select as best, as also explained here. This will help other users find that answer faster.

Regards

/Peter