Top Part Product Marking decipher key for SOIC 8 packages

Question: Can you provide me with the Top Side product Marking especially date code description\decipher key for SOIC8 packages?

 

Answer:

The break down of the 6 digit date code, YWWLLLL, is as follows,
Y : year
WW : work week
LLLL : Lot number
 
E.g. 9224951 Year :1999 work week : 22 lot number : 4951
 
Note: This article is for SOIC8 Cypress Products. For lead free parts please refer to the Lead-Free Standard Marking Format