SM55T Series 1.8 V
CMOS Clock Oscillators
April 2010
Part Number:
SM55
45
T
E
X
-75.0M -XX
Part Marking:
Packaging code or blank
PFF.FFF M
C YMDxx
-or-
PFF.FFF
C YYWWxx
-or-
T250 = 250 per Tape and Reel
T500 = 500 per Tape and Reel
T1K = 1000 per Tape and Reel
Frequency in MHz
PLE SM55
FF.FFF M
CYMDxx
-or-
P5xYWWx
C FF.FF Mxxx
-or-
5xYWWxx
FF.FFF M
CPLE xxx
Supply Voltage VCC
X = 1.8V 10%
Optional Enhanced OTR
Blank = Temp. range -10 to +70oC
C = Temp. range -20 to +70oC
E = Temp. range -40 to +85oC
Series Model
Frequency Stability
45 = 50 ppm
44 = 25 ppm
20 = 20 ppm
Series Model
Marking Legend:
PLE
= Pletronics
FF.FFF M = Frequency in MHz
YYWW or YWW or YMD = Date of Manufacture (year and week, or year-month-day)
All other marking is internal factory codes
Specifications such as frequency stability, supply voltage and operating temperature range, etc.
are not identified from the marking. External packaging labels and packing list will correctly identify
the ordered Pletronics part number.
Codes for Date Code YMD
Code
Code
10
1
2
3
4
A
B
C
D
E
F
G
H
J
K
L
M
Year
Month
2010 2011 2012 2013 2014
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Code
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
A
10
U
B
11
V
C
D
13
X
E
14
Y
F
15
Z
G
Day
Code
Day
12
W
28
16
H
J
K
L
M
21
N
P
R
T
17
18
19
20
22
23
24
25
26
27
29
30
31
www.pletronics.com
425-776-1880
2
PLETRONICS [ PLETRONICS, INC. ]
