SM8S Series
Low Frequency Crystal
October 2013
• The Pletronics’ SM8S Series is a m iniature
surface m ount crystal.
• The package is ideal for autom ated surface
m ount assem bly and reflow practices.
• Tape and Reel packaging
• 32.768 KHz only
• 1.5 x 3.2 m m 2 pad
• XY Cut Crystal
Pletronics Inc. certifies this device is in accordance with the
RoHS 6/6 (2011/65/EC) and WEEE (2002/96/EC) directives.
Pletronics Inc. guarantees the device does not contain the following:
Cadm ium , Hexavalent Chrom ium , Lead, Mercury, PBB’s, PBDE’s
W eight of the Device: 0.014 gram s
Moisture Sensitivity Level: 1 As defined in J-STD-020D.1
Second Level Interconnect code: e4
Part Number:
SM8S
-9
- 32.768K
-20
-XX
Internal code or blank
blank
= ±30ppm at 25
o
C
20
= ±20ppm at 25
o
C
Nom inal Frequency in KHz
Load Capacitance
Blank = 12.5pF
9
= 9pF
7
= 7pF
(other values are special order)
M odel Num ber
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
P roduct inform ation is current as of publication date. T he product conform s
to specifications per the term s of the P letronics standard warranty. Production
processsing does not necessarily include testing of all param eters.
Copyright © 2006, 2007, 2008, 2009, 2010 Pletronics Inc.
SM8S Series
Low Frequency Crystal
October 2013
Electrical Specification:
Item
Frequency
Calibration Frequency Tolerance
Equivalent Series Resistance
Drive Level
Turn Over Temperature
Temperature Coefficient
Q Factor
Shunt Capacitance
Motional Capacitance
Aging (for first year)
Insulation Resistance
Crystal Cut
Operating Temperature Range
Storage Temperature Range
Shock Resistance
Vibration Resistance
Reflow Resistance
-40
-55
-10
-5
-5
+85
+125
+10
+5
+5
o
Min
Max
32.768
Unit
kHz
Condition
-30
-20
--
--
20
-0.035
30000
1.7
2.9
-3
500M
+30
+20
70K
1.0
30
ppm
Ohms
uW
o
standard
“20"
at 25
o
C _ 3
o
C
+
C
Nominal is 25
o
C
typical
ppm/
o
C
2
--
Q
pF
fF
+3
--
ppm/Yr
Ohms
Pin to Pin Capacitance, typical
typical
at 25
o
C _ 3
o
C
+
at 100V DC
XY Cut
C
C
o
ppm
ppm
ppm
XY Crystal Frequency versus Temperature - Typical Performance:
www.pletronics.com
425-776-1880
2
SM8S Series
Low Frequency Crystal
October 2013
Mechanical:
Inches
A
B
C
D
1
E
1
1
mm
1.5 + 0.1
_
3.2 + 0.1
_
1.0 max
0.75
1.7
0.059 _ 0.004
+
0.126 _ 0.004
+
0.039 max
0.0295
0.067
Typical dimensions
Contacts :
Gold 11.8 µinches 0.3 µm minimum over
Nickel 50 to 350 µinches 1.27 to 8.89 µm
Not to Scale
Package Labeling
Label is 1" x 2.6" (25.4m m x 66.7m m )
Font is Courier New
Bar code is 39-Full ASCII
Label is 1" x 2.6" (25.4m m x 66.7m m )
Font is Arial
Part Marking:
• Marking consists of a m anufacturing date code
• Orientation of m arking m ay be m ixed on the tape
• Traceability of part’s specification is lost once rem oved 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.
• The signal leads to the SM8S, in m ost oscillator applications, are exceptionally high im pedance.
Rem em ber to protect these leads from m oisture and contam ination as leakage paths can inhibit proper
oscillator function.
www.pletronics.com
425-776-1880
3
SM8S Series
Low Frequency Crystal
October 2013
Reflow Cycle (typical for lead free processing)
The part m ay be reflowed 2 tim es without degradation.
Tape and Reel: available for quantities of 3000 per reel
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
B1
Max
12.1
E2 Min
F
P1
T2
Max
1.2
W
Max
12.3
Ao, Bo
& Ko
Note 1
Not to scale
14.25
5.5 _0.1
+
4.0 _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
12.4
+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
12.4
+2.0
-0.0
12.4
+2.0
-0.0
12.0
13.0
330.2
3.75
95.3
Tape
Width
Reel dimensions may vary from the above
www.pletronics.com
425-776-1880
4
SM8S Series
Low Frequency Crystal
October 2013
IM PORTANT NOTICE
Pletronics Incorporated (PLE) reserves the right to m ake corrections, im provem ents, m odifications and
other changes to this product at anytim e. PLE reserves the right to discontinue any product or service
without notice. Custom ers are responsible for obtaining the latest relevant inform ation before placing
orders and should verify that such inform ation is current and com plete. All products are sold subject to
PLE’s term s and conditions of sale supplied at the tim e of order acknowledgm ent.
PLE warrants perform ance of this product to the specifications applicable at the tim e of sale in accordance
with PLE’s lim ited warranty. Testing and other quality control techniques are used to the extent PLE
deem s necessary to support this warranty. Except where m andated by specific contractual docum ents,
testing of all param eters of each product is not necessarily perform ed.
PLE assum es no liability for application assistance or custom er product design. Custom ers are
responsible for their products and applications using PLE com ponents. To m inim ize the risks associated
with the custom er products and applications, custom ers 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 system s or other critical applications that m ay involve potential risks of death,
personal injury or severe property or environm ental dam age. Inclusion of PLE products in such
applications is understood to be fully at the risk of the custom er. 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 im plied, is granted under any PLE
patent right, copyright, artwork or other intellectual property right relating to any com bination, m achine or
process which PLE product or services are used. Inform ation 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 endorsem ent thereof. Use of such inform ation m ay 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 inform ation in PLE data sheets or web site is perm issible only if the reproduction is
without alteration and is accom panied by associated warranties, conditions, lim itations and notices.
Reproduction of this inform ation with alteration is an unfair and deceptive business practice. PLE is not
responsible or liable for such altered docum ents.
Resale of PLE products or services with statem ents different from or beyond the param eters stated by
PLE for that product or service voids all express and im plied warranties for the associated PLE product or
service and is an unfair or deceptive business practice. PLE is not responsible for any such statem ents.
Contacting Pletronics Inc.
Pletronics Inc.
19013 36 Ave. W est
Lynnwood, W A 98036-5761 USA
th
Tel: 425-776-1880
Fax: 425-776-2760
E-m ail:
ple-sales@ pletronics.com
URL:
www.pletronics.com
Copyright © 2006, 2007, 2008, 2009, 2010 Pletronics Inc.
www.pletronics.com
425-776-1880
5
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
