Section I - Web Version (Spec.# 81-1682/Dwg Ref.# 01-0041)
Micro8
Notes: This part marking information applies to devices produced before 02/26/2001
EXAMPLE: THIS IS AN IRF7501
DATE CODE (YW)
Y = LAST DIGIT OF YEAR
WW = WEEK
PART NUMBER
Notes: This part marking information applies to devices produced after 02/26/2001
EXAMPLE: THIS IS AN IRF7501
LOT CODE (XX)
DATE CODE (YW)
Y = YEAR
W = WEEK
P = DESIGNATES LEAD - FREE
PRODUCT (OPTIONAL)
PART NUMBER
WW = (1-26) IF PRECEDED BY LAST DIGIT OF CALENDAR YEAR
DATE CODE EXAMPLES:
YWW = 9503 = 5C
YWW = 9532 = EF
YEAR
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
Y
1
2
3
4
5
6
7
8
9
0
WORK
WEEK
01
02
03
04
W
A
B
C
D
24
25
26
X
Y
Z
WW = (27-52) IF PRECEDED BY A LETTER
YEAR
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
Y
A
B
C
D
E
F
G
H
J
K
WORK
WEEK
27
28
29
30
W
A
B
C
D
50
51
52
X
Y
Z
www.irf.com
01/18/05
Web Version 06
6
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