SM55 Series
Miniature SMD Crystal
August 2007
• The Pletronics’ SM55 Series is a miniature
surface mount crystal
• The package is ideal for automated surface
mount assembly and reflow practices.
• Tape and Reel packaging
• 3 MHz to 70 MHz
• 5 x 13 x 5.7 mm 4 pad
• AT Cut Crystal
Pletronics Inc. certifies this device is in accordance with the
RoHS 5/6 (2002/95/EC) and WEEE (2002/96/EC) directives.
Pletronics Inc. guarantees the device does not contain the following:
Cadmium, Hexavalent Chromium, Lead (<1000 ppm), Mercury, PBB’s, PBDE’s
Weight of the Device: 0.65 grams
Moisture Sensitivity Level: 1 As defined in J-STD-020C
Second Level Interconnect code: e1, e2 or e3
Electrical Specification:
Item
Frequency Range
Calibration Frequency Tolerance
Frequency Stability over OTR
Equivalent Series Resistance
(ESR)
Min
3
-
-
-
-
-
-
-
-
-
-
Drive Level
Shunt Capacitance
Aging
Specified Temperature Range
Storage Temperature Range
(C0)
-
-
-5
-40
-55
Max
70
-
-
200
150
120
100
80
50
40
100
1
7
+5
+85
+125
Unit
MHz
ppm
ppm
Ohms
Ohms
Ohms
Ohms
Ohms
Ohms
Ohms
Ohms
mW
pF
ppm /Yr
o
o
Condition
AT cut
at +25
o
C + 3
o
C
_
see table on page 3
for available options
3 MHz to 4 MHz
4 MHz to 5 MHz
5 MHz to 6 MHz
6 MHz to 7 MHz
7 MHz to 8 MHz
8 MHz to13 MHz
13 MHz to 30 MHz
25 MHz to 70 MHz
use 10 µW for testing
Pad to Pad capacitance
at +25
o
C + 3
o
C
_
see table on page 3 for available options
3
rd
Overtone
Fundamental
C
C
Product information is current as of publication date. The product conforms
to specifications per the terms of the Pletronics limited warranty. Production
processsing does not necessarily include testing of all parameters.
Copyright © 2006, 2007, Pletronics Inc.
SM55 Series
Miniature SMD Crystal
August 2007
AT Cut Crystal Frequency
versus Temperature
Typical Performance:
Deviation (ppm)
160
140
120
100
80
60
40
20
0
-20
-40
-60
-80
-100
-120
-140
-160
-60
-40
-20
0
20
40
o
60
80
100
120
Part Marking:
1xFFFFFPymdz
or
L1xFFFFzywwz
Temperature ( C)
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
pF
A
B
C
D
8
E
F
G
H
J
K
L
M
N
P
Q
R
S
T
U
V
W
X
Y
10 12 13
15 18 20 22 24 26 28 30 32 34 36 27 series 33 50 19 16 17 14
Codes for Date Code YMD
Code
Year
Code
Month
Code
Day
Code
Day
Code
Day
1
1
D
13
T
25
6
2006
A
JAN
2
2
E
14
U
26
7
2007
B
FEB
3
3
F
15
V
27
8
2008
C
MAR
4
4
G
16
W
28
9
2009
D
APR
E
MAY
5
5
H
17
X
29
0
2010
F
JUN
6
6
J
18
Y
30
1
2011
G
JUL
7
7
K
19
Z
31
H
AUG
8
8
L
20
2
2012
J
SEP
9
9
M
21
K
OCT
A
10
N
22
L
NOV
B
11
P
23
M
DEC
C
12
R
24
www.pletronics.com
425-776-1880
2
SM55 Series
Miniature SMD Crystal
August 2007
Part Number:
SM55
-18 -14.31818M
-50
H
1
G
G
-XX
See chart below for available options
Internal code or blank
Highest Specified Operating Temperature
A
= 40
o
C
G
= 70
o
C
H
= 75
o
C
B
= 45
o
C
J
= 80
o
C
C
= 50
o
C
o
K
= 85
o
C
D
= 55 C
E
= 60
o
C
F
= 65
o
C
Lowest Specified Operating Temperature
F
= -15
o
C
L
= -40
o
C
A
= +10
o
C
o
o
G
= -20 C
B
= +5 C
H
= -25
o
C
C
= 0
o
C
J
= -30
o
C
D
= -5
o
C
o
K
= -35
o
C
E
= -10 C
Mode:
1
= Fundamental
Frequency Stability
3
=3rd Overtone
See chart below
Calibration Frequency Tolerance
15
= _ 15 ppm at 25
o
C _ 3
o
C
+
+
o
+
20
= _ 20 ppm at 25 C _ 3
o
C
+
+
30
= _ 30 ppm at 25
o
C _ 3
o
C (Standard)
+
Frequency in MHz
Cload in pF
Parallel Resonance from
09
to
44
pF or
SR
= Series Resonance
Series Model
Available Frequency Stability versus Temperature in ppm
Operating
Temperature Range
0 to +45 C
0 to +50 C
0 to +60 C
0 to +70 C
-10 to +50 C
-10 to +60
o
C
-10 to +75
o
C
-20 to +70 C
-20 to +75 C
-30 to +75 C
-30 to +80 C
-30 to +85 C
-35 to +80 C
-40 to +85 C
o
o
o
o
o
o
o
o
o
o
o
o
D
CODE
CB
CC
CE
CG
EC
EE
EH
GG
GH
JH
JJ
JK
KJ
LK
_
+ 10
E
+ 15
_
F
+ 20
_
G
+ 30
_
H
+ 50
_
J
+ 100
_
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STD
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www.pletronics.com
425-776-1880
3
SM55 Series
Miniature SMD Crystal
August 2007
Legacy Part Number (not for new designs):
SM55
B
E
-18
-11.0592M
-XX
Internal code or blank
Frequency in MHz
Cload in pF
Parallel Resonance in pF or
SR
= Series Resonance
Operating Temperature Range
Blank = 0 to + 70
o
C (STD)
E
= -40 to +85
o
C
Calibration Tolerance / Frequency Stability
Blank = 30/50 (STD)
B
= 30/30
C
= 15/30
D
= 10/20 (not all frequencies)
Series Model
Reliability: Environmental Compliance
Parameter
Mechanical Shock
Vibration
Solderability
Thermal Shock
Condition
MIL-STD-883 Method 2002, Condition B
MIL-STD-883 Method 2007, Condition A
MIL-STD-883 Method 2003
MIL-STD-883 Method 1011, Condition A
Package Labeling
Label is 1" x 2.6" (25.4mm x 66.7mm)
Font is Courier New
Bar code is 39-Full ASCII
Label is 1" x 2.6" (25.4mm x 66.7mm)
Font is Arial
www.pletronics.com
425-776-1880
4
SM55 Series
Miniature SMD Crystal
August 2007
Mechanical:
Inches
A
B
C
D
1
E
1
F
1
0.189 max
0.512 max
0.224 max
0.051
0.303
0.047
mm
4.8 max
13.0 max
5.7 max
1.3
7.7
1.2
1
Typical dimensions
Not to Scale
Contacts :
Matte Tin (Sn) or Tin over Copper (SnCu) or SAC (SnAgCu)
Connection (bottom view):
Pin 2 & 3 connected to metal case
Layout and application information
•
•
•
Trace lengths to the crystal should be kept as short as possible.
The crystal connections are sensitive to noise.
The package should be grounded for optimum performance.
www.pletronics.com
425-776-1880
5
stm32/stm8
