SM12T2 Series
Miniature SMD Crystal
May 2006
• The Pletronics’ SM12T2 Series is a miniature
surface mount crystal with either a metal or
ceramic cover.
• The package is ideal for automated surface
mount assembly and reflow practices.
• Tape and Reel packaging
•
•
•
•
10 MHz to 50 MHz
3.5 x 6 mm 2 pad
AT Cut Crystals Fundamental Mode
Ideal for use in hand held consumer products.
Pletronics Inc. certifies this device is in accordance with the
RoHS 6/6 (2002/95/EC) and WEEE (2002/96/EC) directives.
Pletronics Inc. guarantees the device does not contain the following:
Cadmium, Hexavalent Chromium, Lead, Mercury, PBB’s, PBDE’s
Weight of the Device: 0.06 grams
Moisture Sensitivity Level: 1 As defined in J-STD-020C
Second Level Interconnect code: e4
Electrical Specification
:
Item
Frequency Range
Calibration Frequency Tolerance
Frequency Stability over OTR
Equivalent Series Resistance
(ESR)
Drive Level
Shunt Capacitance
Aging
Operating Temperature Range
Storage Temperature Range
(C0)
Min
10
-10
-10
-
-
-
-
-5
-40
-55
Max
50
+100
+100
60
40
100
5
+5
+85
+125
Unit
MHz
ppm
ppm
Ohms
Ohms
μW
pF
ppm /Yr
o
o
Condition
AT cut Fundamental
at +25
o
C + 3
o
C, see part number for options
_
see part number for available options
10 MHz to 16 MHz
>16 MHz
use 10
μW
for testing
Pad to Pad capacitance
at +25
o
C + 3
o
C
_
see part number for available options
Fundamental
C
C
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
60
80
100
120
Temperature (
o
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, Pletronics Inc.
SM12T2 Series
Miniature SMD Crystal
May 2006
Part Number:
SM12T2 -18
-14.31818M
-50
H
1
G
G
-XX
See chart below for available options
Internal code or blank
Highest Specified Operating Temperature
G
= 70
o
C
A
= 40
o
C
B
= 45
o
C
H
= 75
o
C
o
C
= 50 C
J
= 80
o
C
D
= 55
o
C
K
= 85
o
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
B
= +5
o
C
G
= -20
o
C
C
= 0
o
C
H
= -25
o
C
D
= -5
o
C
J
= -30
o
C
o
K
= -35
o
C
E
= -10 C
Mode:
1
= Fundamental
Frequency Stability
See chart below
Calibration Frequency Tolerance
+
10
= _ 10 ppm at 25
o
C _ 3
o
C
+
o
15
= _ 15 ppm at 25 C _ 3
o
C
+
+
20
= _ 20 ppm at 25
o
C _ 3
o
C
+
+
o
50
= _ 50 ppm at 25 C _ 3
o
C (Standard)
+
+
Frequency in MHz
Cload in pF
Parallel Resonance from
06
to
32
pF (18 pF std) 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
o
C
-10 to +60 C
-10 to +75 C
-20 to +70 C
-20 to +75 C
-30 to +75 C
-30 to +80 C
-30 to +85 C
-35 to +80
o
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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www.pletronics.com
425-776-1880
2
SM12T2 Series
Miniature SMD Crystal
May 2006
Part Marking:
FF.FFF
M
Pymdxz
Legend:
P
= Pletronics
x
= Capacitance load code from below
FF.FFM
= Frequency in MHz
YMD
= Date of Manufacture (year, month and day)
All other marking is internal factory codes
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.
•
•
Orientation of marking may be mixed on the tape
Traceability of part is lost once removed from reel
B
C
D
8
E
F
G
H
J
K
L
M
N
P
Q
R
S
T
U
V W
X
Y
Code
A
pF
10 12 13
15 18 20 22 24 26 28 30 32 34 36 27
series
33 50 19 16 17 14
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
3
SM12T2 Series
Miniature SMD Crystal
May 2006
Mechanical:
Inches
A
B
C
D
1
E
1
0.138 + 0.008
_
0.236 + 0.008
_
0.044 max
0.079
mm
3.5 _ 0.2
+
6.0 _ 0.2
+
1.1 max
2.0
3.0
0.118
1
Typical dimensions
Not to Scale
Contacts :
Gold 11.8
μinches
0.3
μm
minimum over Nickel 50 to 350
μinches
1.27 to 8.89
μm
Connection (top view):
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
4
SM12T2 Series
Miniature SMD Crystal
May 2006
Reflow Cycle (typical for lead free processing)
260°C Maximum
10 Seconds Maximum
215°C±10°C
175°C±10°C
Temperature (°C)
250
200
150
100
120 to 160 Seconds
Approximately 50 Seconds
Allowed rate of temperature change
Maximum 4°C per second
The part may be reflowed 2 times without degradation.
Tape and Reel: available for quantities of 250 to 3000 per reel
(<1000 will be cut tape)
Constant Dimensions Table 1
Tape
Size
8mm
12mm
16mm
24mm
1.5
+0.1
-0.0
D1
Min
1.0
1.5
1.5
1.5
1.75
_0.1
+
4.0
0.6
_
+0.1
2.0
_0.1
+
0.25
0.1
S1
Min
T
Max
T1
Max
D0
E1
P0
P2
2.0
_
+0.05
Variable Dimensions Table 2
Tape
Size
12 mm
16 mm
B1
Max
7.1
7.1
E2 Min
F
P1
T2
Max
1.5
1.5
W
Max
12.3
16.3
Ao, Bo
& Ko
Note 1
Note 1
Not to scale
10.25
14.25
5.5 _0.1
+
7.5 _0.1
+
8.0 +0.1
_
8.0 +0.1
_
Note 1: Embossed cavity to conform to EIA-481-B
Dimensions in mm
REEL DIMENSIONS
A
inches
mm
B
inches
mm
C
D
mm
mm
16.4
+2.0
-0.0
7.0
177.8
2.50
63.5
10.0
254.0
4.00
101.6
13.0 +0.5 / -0.2
16.4
+2.0
-0.0
16.4
+2.0
-0.0
16.0
13.0
330.2
3.75
95.3
Tape
Width
Reel dimensions may vary from the above
www.pletronics.com
425-776-1880
5
PCB设计
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