Top Mark Convention - 3-Digit Date Code

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Packaging Information Green Initiative / RoHS

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

Summary

Symbol	Format	Description	Applicable Packages
&3	XYY	3-digit date code X stands for calendar year YY stands for workweek	TSSOP-8L MOSFET BGA SOT-223 SSOT-8 TO-218 (DPP) TO-220 TO-247 TO-247ST (DPP) TO-251/252 TO-263/262 TO-268 (DPP) SSOT-227/ISOTOP SOIC-8 (DPP) TO-92/226/237

Table 1: Numeric Calendar Year Coding Scheme

Calendar Year	Non-Lead Free Products	Lead Free Products
2007	7YY	HYY
2008	8YY	JYY
2009	9YY	KYY
2010	0YY	AYY
2011	1YY	BYY
2012	2YY	CYY
2013	3YY	DYY
2014	4YY	EYY
2015	5YY	FYY
2016	6YY	GYY
2017	7YY	HYY
2018	8YY	JYY
2019	9YY	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	X06
Workweek 12-17	X12
Workweek 18-23	X18
Workweek 24-29	X24
Workweek 30-35	X30
Workweek 36-41	X36
Workweek 42-47	X42
Workweek 48-51	X48
Workweek 52-05	X52

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

Work Week No.	Value
Workweek 1,2	X01
Workweek 3,4	X03
Workweek 5,6	X05
(continues for the rest of the workweeks)
Workweek 49,50	X49
Workweek 51,52	X51
Workweek 53	X53

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

Work Week No.	Value
Workweek 01	X01
Workweek 02	X02
Workweek 03	X03
(continues for the rest of the workweeks)
Workweek 51	X51
Workweek 52	X52
Workweek 53	X53

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