Top Mark Convention - 4-Digit Date Code

Contents Summary | Calendar Year Scheme | Six-week Scheme | Two-week Scheme | Weekly Scheme

Summary

Symbol	Format	Description	Applicable Packages
&4	XXYY	4-digit date code XX stands for calendar year YY stands for workweek	SOIC 14L DMOS SPAK SSOT-227/ISOTOP (DPP) MDIP 14, 16, 20, 24

Table 1: Numeric Calendar Year Coding Scheme

Calendar Year	Non-Lead Free Products	Lead Free Products
2000	00YY	AYY
2001	01YY	BYY
2002	02YY	CYY
2003	03YY	DYY
2004	04YY	EYY
2005	05YY	FYY
2006	06YY	GYY
2007	07YY	HYY
2008	08YY	JYY
2009	09YY	KYY

Note: The marking of the calendar year will repeat after the cycle of ten (10) years.
YY stands for workweek code.

Table 2: Six weeks numeric date code scheme
Date Code Type is "S6" for this scheme.

Workweek No.	Value
Workweek 06-11	XX06
Workweek 12-17	XX12
Workweek 18-23	XX18
Workweek 24-29	XX24
Workweek 30-35	XX30
Workweek 36-41	XX36
Workweek 42-47	XX42
Workweek 48-51	XX48
Workweek 52-05	XX52

Table 3: Two weeks numeric date code scheme
Date Code Type is "S2" for this scheme.

Work Week No.	Value
Workweek 1,2	XX01
Workweek 3,4	XX03
Workweek 5,6	XX05
(continues for the rest of the workweeks)
Workweek 49,50	XX49
Workweek 51,52	XX51
Workweek 53	XX53

Table 4: Weekly numeric date code scheme
Date Code Type is "S1" for this scheme.

Work Week No.	Value
Workweek 01	XX01
Workweek 02	XX02
Workweek 03	XX03
(continues for the rest of the workweeks)
Workweek 51	XX51
Workweek 52	XX52
Workweek 53	XX53

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