SM20S - Pletronics, Inc.

SM20S Series
Low Frequency Crystal
March 2012
• The Pletronics’ SM20S Series is a miniature
surface mount crystal.
• The package is ideal for automated surface
mount assembly and reflow practices.
• Tape and Reel packaging
• 32.768 KHz only
• 3.8 x 8 mm 4 pad
• XY Cut Crystal
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, Mercury, PBB’s, PBDE’s
Weight of the Device: 0.118 grams
Moisture Sensitivity Level: 1 As defined in J-STD-020C
Second Level Interconnect code: e3
Part Number:
SM20S
- 32.768K
- 6PF
-XX
Internal code or blank
Load Capacitance
Blank = 12.5pF
6 = 6pF
Nominal Frequency in KHz
Model Number
Reliability: Environmental Compliance
Parameter
Condition
Mechanical Shock
MIL-STD-883 Method 2002, Condition A
Vibration
MIL-STD-883 Method 2007, Condition A
Solderability
MIL-STD-883 Method 2003
Thermal Shock
MIL-STD-883 Method 1011, Condition A
Product informatin is current as of publication date. The product conforms
to specifications per the terms of the Pletronics standard warranty. Production
processsing does not necesarily include testing of all parameters.
Copyright © 2005, 2006 Pletronics Inc.
SM20S Series
Low Frequency Crystal
March 2012
Electrical Specification:
Item
Min
Frequency
Calibration Frequency Tolerance
Max
Unit
32.768
kHz
-20
+20
ppm
Equivalent Series Resistance
--
50K
Ohms
Drive Level
--
1.0
uW
Turn Over Temperature
20
30
Temperature Coefficient
Q Factor
Condition
o
at +25oC
Nominal is 25oC
C
ppm/oC2
-0.035
50000
--
typical
Q
Shunt Capacitance
1.0
pF
Pin to Pin Capacitance, typical
Motional Capacitance
1.9
fF
typical
Aging (for first year)
Insulation Resistance
-5
+5
ppm/Yr
at 25oC +
_ 3 oC
500M
--
Ohms
at 100V DC
Crystal Cut
XY Cut
Operating Temperature Range
-40
+85
o
C
Storage Temperature Range
-55
+125
o
C
Shock Resistance
-10
+10
ppm
Vibration Resistance
-5
+5
ppm
Reflow Resistance
-5
+5
ppm
XY Crystal Frequency
versus Temperature
Typical Performance:
0
-20
Deviation (ppm)
-40
-60
-80
-100
-120
-140
-160
-45
-35
-25
-15
-5
5
15
25
35
45
55
65
75
85
Temperature (C)
www.pletronics.com
425-776-1880
2
SM20S Series
Low Frequency Crystal
March 2012
Mechanical:
Dimensions specified are typical
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
Part Marking:
• Marking consists of an internal manufacturing date code
• Orientation of marking may be mixed on the tape
• Traceability of part’s specification is lost once removed from reel
Layout and application information
• Trace lengths to the crystal should be kept as short as possible.
• The crystal connections are sensitive to noise.
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3
SM20S Series
Low Frequency Crystal
March 2012
Temperature (°C)
Reflow Cycle (typical for lead free processing)
260°C Maximum
10 Seconds Maximum
250
215°C±10°C
200
175°C±10°C
150
100
Approximately 50 Seconds
120 to 160 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 1000 per reel
Constant Dimensions Table 1
Tape
Size
D0
8mm
D1
Min
E1
P0
1.0
12mm
1.5
16mm
+0.1
-0.0
24mm
P2
S1
Min
T
Max
0.6
0.25
T1
Max
2.0
_
+0.05
1.5
1.75
4.0
1.5
_
+0.1
_
+0.1
0.1
2.0
_
+0.1
1.5
Variable Dimensions Table 2
Tape
Size
B1
Max
E2 Min
F
P1
T2
Max
W
Max
Ao, Bo
& Ko
16 mm
12.1
14.25
5.5 _
+0.1
8.0 _
+0.1
1.2
12.3
Note 1
Note 1: Embossed cavity to conform to EIA-481-B
Dimensions in mm
Not to scale
REEL DIMENSIONS
A
B
inches
7.0
10.0
13.0
mm
177.8
254.0
330.2
inches
2.50
4.00
3.75
mm
63.5
101.6
95.3
Tape
Width
C
mm
13.0 +0.5 / -0.2
D
mm
16.4
+2.0
-0.0
16.4
+2.0
-0.0
16.4
+2.0
-0.0
16.0
mm
---
---
24.4
+2.0
-0.0
24.0
mm
---
---
32.4
+2.0
-0.0
32.0
Reel dimensions may vary from the above
www.pletronics.com
425-776-1880
4
SM20S Series
Low Frequency Crystal
March 2012
IMPORTANT NOTICE
Pletronics Incorporated (PLE) reserves the right to make corrections, improvements, modifications and
other changes to this product at anytime. PLE reserves the right to discontinue any product or service
without notice. Customers are responsible for obtaining the latest relevant information before placing
orders and should verify that such information is current and complete. All products are sold subject to
PLE’s terms and conditions of sale supplied at the time of order acknowledgment.
PLE warrants performance of this product to the specifications applicable at the time of sale in accordance
with PLE’s limited warranty. Testing and other quality control techniques are used to the extent PLE
deems necessary to support this warranty. Except where mandated by specific contractual documents,
testing of all parameters of each product is not necessarily performed.
PLE assumes no liability for application assistance or customer product design. Customers are
responsible for their products and applications using PLE components. To minimize the risks associated
with the customer products and applications, customers should provide adequate design and operating
safeguards.
PLE products are not designed, intended, authorized or warranted to be suitable for use in life support
applications, devices or systems or other critical applications that may involve potential risks of death,
personal injury or severe property or environmental damage. Inclusion of PLE products in such
applications is understood to be fully at the risk of the customer. Use of PLE products in such applications
requires the written approval of an appropriate PLE officer. Questions concerning potential risk
applications should be directed to PLE.
PLE does not warrant or represent that any license, either express or implied, is granted under any PLE
patent right, copyright, artwork or other intellectual property right relating to any combination, machine or
process which PLE product or services are used. Information published by PLE regarding third-party
products or services does not constitute a license from PLE to use such products or services or a
warranty or endorsement thereof. Use of such information may require a license from a third party under
the patents or other intellectual property of the third party, or a license from PLE under the patents or other
intellectual property of PLE.
Reproduction of information in PLE data sheets or web site is permissible only if the reproduction is
without alteration and is accompanied by associated warranties, conditions, limitations and notices.
Reproduction of this information with alteration is an unfair and deceptive business practice. PLE is not
responsible or liable for such altered documents.
Resale of PLE products or services with statements different from or beyond the parameters stated by
PLE for that product or service voids all express and implied warranties for the associated PLE product or
service and is an unfair or deceptive business practice. PLE is not responsible for any such statements.
Contacting Pletronics Inc.
Pletronics Inc.
19013 36th Ave. W, Suite H
Lynnwood, WA 98036-5761 USA
Tel: 425-776-1880
Fax: 425-776-2760
E-mail: [email protected]
URL: www.pletronics.com
Copyright © 2005, 2006, Pletronics Inc.
www.pletronics.com
425-776-1880
5