Due to the quick growth of MEAN WELL Group , the first code of the finished product serial number will be adjusted since January 2021. For detailed information, please refer below .

 

Standard S/N Definition
T 1	B8 2	0 3	012345 4
1. Manufacture Site:				Before 2020 After 2021 E：Finished product Made in China (Suzhou ) S：Finished product with laser engraved label made in China(Suzhou) S：Made in China (Suzhou ) H：Made in China (Guangzhou) G：Finished product with laser engraved label made in China(Guangzhou) G：Made in China (Guangzhou) R：Made in Taiwan T：Made in Taiwan   M：Made In Philippines   B： Made In India
2. Manufacture Year				A0 = Year 2000、A1 = Year 2001、A7 = Year 2007 B0 = Year 2010、B1 = Year 2011、B8 = Year 2018 C0 = Year 2020、C1 = Year 2021、C9 = Year 2029 D0 = Year 2030、D1 = Year 2031、D9 = Year 2039 E0 = Year 2040、E1 = Year 2041、E9 = Year 2049 F0 = Year 2050、F1 = Year 2051、F9 = Year 2059
3. Manufacture Month				1：January 2：February 0：October A：November B：December
4. The number of production unit at that month.				Example: 012345 = the 12345th unit manufactured at that mont

 

Four Code Definition
T 1	18 2	22 3
1. Manufacture Site:			Please refer to the "Manufacture Site" description in the first part above.
2. The Last 2 Digits of The   Manufacture Year			17 : 2017 18 : 2018
3. The Week of The Manufacture Year			15：Week 15 22：Week 22