4 Diodes
Marking Guide
1
s
Axial (A0)
6
s
TO-3PF, FM100 type
qPart
Number (abbreviation)
The AM01 is indicated as “M.”
wClass
Z: 200V None: 400V A: 600V
B: 800V C: 1000V
eManufacturing
date
First letter: Year (Last digit of year)
Second letter: Month (1 to 9, O, N, D)
rCathode
band: Continuous band
Color of the band: White(Yellow for AU02 series)
qPart
Number: Full name
wPolarity:
Rectifier Symbol
eLot
No.
First letter: Year (Last digit of year)
Second letter: Month (1 to 9, O, N, D)
Third and fourth letters: Day
Laser marking or White ink marking
M A
FML-32S
7D05
➀ ➁
9
D
(1-chip type)
FMG-G3CS
2
s
Axial (E0, E1)
qPart
Number (abbreviation)
EM01, EM2, EM1 are indicated as MO, M2
and M1, respectively.
wClass
Z: 200V None: 400V A: 600V
B: 800V C: 1000V F: 1500V
But EU02A is indicated as A2 and EU2YX as Y.
eManufacturing
date
First letter: Year (Last digit of year)
Second letter: Month (1 to 9, O, N, D)
rManufacturing
period
First 10 days of month
••
Middle 10 days of month
•••
Last 10 days of month
1924
MO
C
87
7
s
Surface-Mount (SFP)
C468
Cathode band
Color: White
➀ ➂
qPart
Number: abbreviation
SFPB-64 is indicated as “C4”
wCathode
band
eLot
No.
First letter: Year (Last digit of year)
Second letter: Month (1 to 9, O, N, D)
3
s
Axial (R1, R2, R3, R4)
qPart
Number: 2 set marking
wManufacturing
date and period: 2 set marking
First letter: Year (Last digit of year)
Second letter: Month (1 to 9, O, N, D)
First 10 days of month
••
Middle 10 days of month
•••
Last 10 days of month
eCathode
band
White: For Power Supply and SBD
Color of
Yellow: For Medium speed
the band:
Red: For Fast and ultrafast
8
s
Surface-Mount (D pack)
B 64S
RK44
96
qPart
Number
wPolarity:
Rectifier Symbol
eLot
No.
First letter: Lot code
Second letter: Year (Last digit of year)
Third letter: Month (A to M except I)
A
6H
9
s
Surface-Mount (TO-220S)
E 29G
4
s
RBV
RBV
9
402
9B
qPart
Number
wLot
No.
First letter: Year (Last digit of year)
Second letter: Month (1 to 9, O, N, D)
Third letter: A—First 10 days of month
B—Middle 10 days of month
C—Last 10 days of month
eInput/output
marking
Laser marking or White ink marking
9C1
qPart
Number
wPolarity:
Rectifier Symbol
eLot
No.
First letter: Year (Last digit of year)
Second letter: Month (A to M except I)
Third letter: Week
10
s
SZ-10 Series
qPart
Number
wLot
No.
First letter: Year (Last digit of year)
Second letter: Month (1 to 9, O, N, and D)
Third letter: Day
5
s
TO-220F type
qPart
Number
FMU-12S is indicated as “FMU12S.”
wPolarity:
Rectifier Symbol
eLot
No.
First letter: Year (Last digit of year)
Second letter: Month (1 to 9, O, N, D)
Third and fourth letters: Day
Laser marking or White ink marking
FMU12S
8512
11
s
Silicon Varistors
Refer to P222
(1-chip type)
FMLG12
S
0125
qPart
Number: Excluding last letter
FML-G12S is indicated as “FML-G12.”
wLast
letter of Part Number
ePolarity:
Rectifier Symbol
rLot
No.
First letter: Year (Last digit of year)
Second letter: Month (1 to 9, O, N, D)
Third and fourth letters: Day
Laser marking or White ink marking
12
s
Surface-Mount (SJP)
qPart
Number
w
Polarity: Rectifier Symbol
e
Lot No.
First letter: Year (Last digit of year)
Second letter: Month (1 to 9, O, N, and D)
Third and fourth letters: Day
180
Diodes
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