XT49S
www.vishay.com Vishay Dale
Revision: 22-Jul-15 1Document Number: 35014
For technical questions, contact: frequency@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Low Profile Holder Type Crystal Units
This part is a miniature AT cut strip crystal unit with a low
profile package. It is with resistance weld.
FEATURES
•Low cost
Industry standard
Wide frequency range
Excellent aging
Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER SYMBOL CONDITION UNIT MIN. TYP. MAX.
Frequency range FOMHz 3.579545 - 66.000
Frequency tolerance F/FOat 25 °C ppm -30 - +30
Temperature stability TCref. to 25 °C ppm -50 - +50
Operating temperature range TOPR °C -10 - +70
Storage temperature range TSTG °C -55 - +125
Shunt capacitance C0pF - - 7
Load capacitance CLcustomer specified pF 10 - series
Insulation resistance IR100 VDC M500 - -
Drive level DLμW - 100 500
Aging (first year) Fa at 25 °C, per year ppm -5 - +5
EQUIVALENT SERIES RESISTANCE (ESR) AND MODE OF VIBRATION (MODE)
FREQUENCY RANGE (MHz) MAX. ESR () MODE FREQUENCY RANGE (MHz) MAX. ESR ()MODE
3.579 to 3.999 200 fundamental/AT 10.000 to 13.999 80 fundamental/AT
4.000 to 4.999 150 fundamental/AT 14.000 to 39.999 50 fundamental/AT
5.000 to 5.999 120 fundamental/AT 40.000 to 66.000 80 3rd overtone
6.000 to 9.999 100 fundamental/AT
DIMENSIONS in inches [millimeters]
0.435 [11.05] max.
0.183 [4.65]
max.
0.403 [10.24] max.
0.192 ± 0.008
[4.88 ± 0.2]
0.500 [12.7]
min.
0.150 [3.81] max.
Ø 0.017 ± 0.002
[0.43 ± 0.05]
0.138 [3.5]
max.
XT49S
www.vishay.com Vishay Dale
Revision: 22-Jul-15 2Document Number: 35014
For technical questions, contact: frequency@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
ORDERING INFORMATION
XT49S R -20 SP 12M e2
MODEL OTR
blank = standard
R = -40 °C to +85 °C
LOAD
blank = series
-16 = 16 pF
-20 = 20 pF standard
-30 = 30 pF
-32 = 32 pF
OPTIONS
blank = standard
SP = spacer
SL = sleeve
FREQUENCY/MHz JEDEC® LEAD (Pb)-FREE
STANDARD
GLOBAL PART NUMBER
XT9S 20 A NA 12M
MODEL LOAD PACKAGE
CODE
OPTION FREQUENCY
GLOBAL PART NUMBERING
XT9S 20 A NA 40M
MODEL NUMBER LOAD
CAPACITANCE
PACKAGE
CODE OPTIONS FREQUENCY
XT9S = XT49S
XT9M = XT49M
XTU1 = XTUM1
18 = 18 pF
20 = 20 pF
NL = series
to be specified by
customer
Tape and reel
H = RF7 (XT9M)
Bulk
A = B04
(all models)
NA = no additional
options
RR = extended
temperature
of -40 °C to +85 °C
Contact factory for
all other options
4M = 4 MHz
40M = 40 MHz
100M = 100 MHz
12M288 = 12.288 MHz
M is used as
decimal place
holder in frequency
Example: XT49S-20 40M
XT36 20 A 12M
MODEL NUMBER LOAD CAPACITANCE PACKAGE
CODE FREQUENCY
XT46 = XT46C
XT36 = XT36C
18 = 18 pF
20 = 20 pF
NL = series
to be specified by
customer
Tape and reel
H = RF7
Bulk
A = B04
(all models)
4M = 4 MHz
40M = 40 MHz
100M = 100 MHz
12M288 = 12.288 MHz
M is used as
decimal place
holder in frequency
Example: XT36C-20 12M
Legal Disclaimer Notice
www.vishay.com Vishay
Revision: 08-Feb-17 1Document Number: 91000
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
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the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
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typical requirements that are often placed on Vishay products in generic applications. Such statements are not binding
statements about the suitability of products for a particular application. It is the customer’s responsibility to validate that a
particular product with the properties described in the product specification is suitable for use in a particular application.
Parameters provided in datasheets and / or specifications may vary in different applications and performance may vary over
time. All operating parameters, including typical parameters, must be validated for each customer application by the customer’s
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including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
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© 2017 VISHAY INTERTECHNOLOGY, INC. ALL RIGHTS RESERVED
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