Old package code rule (semiconductor package)

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I would like to have an old package code rule for discrete semidoconductor product by predecessor of Infineon, namely Siemens semiconductor.
Please let me know where and how I can get a copy of the old rule.

I have current Infineon nomenclature Guide as follows:
http://www.infineon.com/dgdl/Infineon-NomenclatureGuide_DiscreteIGBTs_Diodes-AP-v01_00-EN.pdf?fileId...

However, I would like to have an old version by Siemens Semiconductor.
More precisely, a predecessor version of current page 7 (Traceability and production date code IGBT/Diode) is necessary.

A product in interest is IGBT "SGP15N60" manufactured by Siemens semiconductor. Products of the same name are also manufactured by Infineon.

In the face of the package of the product, it says "AA851". If we apply the current rule, "AA" is "Lot #1", "851" is "51"-th week of the year 199"8". However, I am not sure whether this package code rule is also used in the Siemens Semiconductor.

Thank you for your help.
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Dear htanaka,

Unfortunately we do not have any old document regarding the traceability and production date code. The nomenclature on page 2 still valid for this part.
The traceability and production date code except the Grp1 should also be valid for your part.
PS: This part has been discontinued. The direct replacement is the IGP15N60T: https://www.infineon.com/cms/en/product/power/igbt/igbt-discrete/discrete-igbt-without-anti-parallel...

hope this helps.
Best regards
Luxun
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Dear Luxun-san,

Thank you for your explanation regarding the traceability and production date code.

Best regards,

htanaka
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