
SM55 Series
Miniature SMD Crystal
August 2006
www.pletronics.com
425-776-1880
2
-160
-140
-120
-100
-80
-60
-40
-20
0
20
40
60
80
100
120
140
160
-60
-40
-20
0
20
40
60
80
100
120
Temperature (
oC)
Devi
at
ion
(
ppm
)
AT Cut Crystal Frequency
versus Temperature
Typical Performance:
Part Marking:
1xFFFFFPymdz
or
L1xFFFFzywwz
Legend:
1
= Model code for SM55
x
= Capacitance load code from below
FFFFF
= Frequency coded
P or L
= Pletronics
ymd or yww
= Date of Manufacture (year, month and day) or year, week week
All other marking is internal factory codes
Some frequency marking examples: 3.579545M = 03579, 14.31818M = 14181, 24.0M = 24000
Specifications such as frequency tolerance 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.
Code
A
B
C
D
E
F
GH
J
K
L
M
N
P
QR
S
T
U
V
W
X
Y
pF
10
12
13
8
1518
2022
2426
2830
3234
3627 series 33 50 19 16 17 14
Codes for Date Code YMD
Code
6
7
8
9
0
1
2
Year
2006
2007
2008
2009
2010
2011
2012
Code
A
B
C
D
E
F
G
H
J
K
L
M
Month
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
Code
12
34
56
78
9
A
B
C
Day
1
23
45
67
89
10
11
12
Code
D
E
F
G
H
J
K
L
M
N
P
R
Day
1314
1516
1718
1920
2122
23
24
Code
T
U
V
W
X
Y
Z
Day
2526
2728
2930
31