SM25 / SM30 / SM42 Series
Miniature SMD Crystal
May 2010
• The Pletronics’ SM42 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
• AT Cut Crystal
• SM42: 4.7 x 12.9 x 4.6 mm
•
SM30: 4.7 x 12.9 x 3.5 mm
•
SM25: 4.7 x 12.9 x 2.9 mm
Pletronics Inc. certifies this device is in accordance with the
RoHS (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: 0.62 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
-
-
-
-
-
-
-
-
Max
70
-
-
150
130
100
90
80
70
60
50
40
-
-
-
-
Drive Level
Shunt Capacitance
Aging
Specified Temperature Range
Storage Temperature Range
(C0)
-
-
-5
-40
-55
30
100
80
60
1
7
+5
+85
+125
Unit
MHz
ppm
ppm
Ohms
Ohms
Ohms
Ohms
Ohms
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 to 4 MHz
4 to 5 MHz
5 to 6 MHz
6 to 7 MHz
7 to 9 MHz
9 to10 MHz
SM42
SM30/SM42
SM30/SM42
SM30/SM42
SM30/SM42
SM25/SM30/SM42
Fundamental
10 to 13 MHz SM25/SM30/SM42
13 to 15 MHz SM25/SM30/SM42
15 to 27 MHz SM25/SM30/SM42
27 to 36 MHz SM25/SM30/SM42
27 to 32 MHz SM25/SM30/SM42
32 to 50 MHz SM25/SM30/SM42
50 to 70 MHz SM25/SM30/SM42
use 100 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
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 © 2010, Pletronics Inc.
SM25 / SM30 / SM42 Series
Miniature SMD Crystal
May 2010
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:
SxFFFFFPymdz
or
LSxFFFFzywwz
Temperature ( C)
Legend:
S
= Model code for SM42, Z = SM25, 5 = SM30
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 = 14318, 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
6
7
8
9
0
1
2
3
4
5
Year
2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
Code
Month
Code
Day
Code
Day
Code
Day
1
1
D
13
T
25
A
JAN
2
2
E
14
U
26
B
FEB
3
3
F
15
V
27
C
MAR
4
4
G
16
W
28
D
APR
E
MAY
5
5
H
17
X
29
F
JUN
6
6
J
18
Y
30
G
JUL
7
7
K
19
Z
31
H
AUG
8
8
L
20
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
SM25 / SM30 / SM42 Series
Miniature SMD Crystal
May 2010
Part Number:
SM42
-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 C
-10 to +75
o
C
-20 to +70
o
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
_
!
!
!
STD
!
!
!
!
!
!
!
!
!
!
J
+ 100
_
!
!
!
!
!
!
!
!
!
!
!
!
!
!
www.pletronics.com
425-776-1880
3
SM25 / SM30 / SM42 Series
Miniature SMD Crystal
May 2010
Legacy Part Number (not for new designs):
SM42
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
SM25 / SM30 / SM42 Series
Miniature SMD Crystal
May 2010
Mechanical:
Inches
A
B
C
D
E
F
G
H
I
J
Contacts (3 types of lead plating used):
Matte Tin (Sn)
Tin over Copper (SnCu)
SAC (SnAgCu)
Not to Scale
K
1
L SM42
L SM30
L SM25
0.457 max
0.414 max
0.532 max
0.192 ± 0.008
0.012 ± 0.004
0.030 ± 0.008
0.197 max
0.145 max
0.040 max
0.197 max
0.016
0.182 max
0.138 max
0.114 max
mm
11.60 max
10.50 max
13.50 max
4.88 ± 0.20
0.30 ± 0.10
0.75 ± 0.20
5.00 max
3.68 max
1.00 max
5.00 max
0.40
4.60 max
3.50 max
2.90 max
1
Typical dimensions
Layout and application information
•
•
•
Trace lengths to the crystal should be kept as short as possible.
The crystal connections are sensitive to noise.
Cload may need to be determined experimentally on the actual PCB.
www.pletronics.com
425-776-1880
5
模拟与混合信号
