Abbreviated markings on mini-mold transistors
Transistors
Abbreviated markings on mini-mold
transistors
!
EMT3 and UMT3 labels
On general transistors, the product and h
FE
rank are
indicated by 2 or 3 letters. On digital transistors, the
product type is indicated by a 2-digit number.
Codes B and AF indicate products.
!
MPT3 labels
The label on the MPT3 packages indicates the product,
h
FE
rank, and month of manufacture using 4 letters.
DA
RT
2
B
3
T indicates the month of manufacture.
R indicates the h
FE
rank.
BR
AFQ
Codes R and Q indicate h
FE
ranks.
DA indicates the product.
MPT3 labels
General transistors
14
Code 14 indicates the product
The month of manufacture is indicated as shown below
by a letter, excluding I and O. (This method is also used
on other packages.)
Month of
manufacture
1
4
5
E
S
6
F
T
7
U
8
9 10 11 12
J
K
L
Y
M
Z
Even year A
Odd year N
C D
G H
Digital transistor
P Q R
V W X
!
SMT3 labels
On the SMT3 package, the product and h
FE
rank are
indicated by 2 or 3 letters on general transistors, and the
product is indicated by a 2-digit number on digital
transistors.
Furthermore, on SMT products with direct laser labels
there is also a number indicating the week of
manufacture. The direction of the number indicates
whether the year of manufacture was an odd year or an
even year.
!
UMT5, UMT6, SMT5, and SMT6 labels
The labels on UMT5, UMT6, SMT5, and SMT6
packages show the product name excluding the initial
two letters (UM or FM), and consist of 2 or 3 letters. On
the SMT6 packages, the week of manufacture is also
shown (similar to the SMT3). The marking is made using
direct laser labeling.
26
26
35
35
(a) Manufactured during the
35th week of an odd year.
(b) Manufactured during the
35th week of an even year.
SMT3 labels