XT49S
Vishay Dale
Low Profile Holder Type Crystal Units
FEATURES
• Low cost
• Industry standard
• Wide frequency range
• Excellent aging
• Compliant to RoHS directive 2002/95/EC
This part is a miniature AT cut strip crystal unit with a low
profile package. It is with resistance weld.
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER
Frequency range
Frequency tolerance
Temperature stability
Operating temperature range
Storage temperature range
Shunt capacitance
Load capacitance
Insulation resistance
Drive level
Aging (first year)
SYMBOL
F
O
ΔF/F
O
T
C
T
OPR
T
STG
C
0
C
L
I
R
D
L
Fa
at 25 °C, per year
customer specified
100 V
DC
at 25 °C
ref. to 25 °C
CONDITION
UNIT
MHz
ppm
ppm
°C
°C
pF
pF
MΩ
μW
ppm
MIN.
3.579545
- 30
- 50
- 10
- 55
-
10
500
-
-5
TYP.
-
-
-
-
-
-
-
-
100
-
MAX.
66.000
+ 30
+ 50
+ 70
+ 125
7
series
-
500
+5
EQUIVALENT SERIES RESISTANCE (ESR) AND MODE OF VIBRATION (MODE)
FREQUENCY RANGE (MHz)
3.579 to 3.999
4.000 to 4.999
5.000 to 5.999
6.000 to 9.999
MAX. ESR (Ω)
200
150
120
100
MODE
fundamental/AT
fundamental/AT
fundamental/AT
fundamental/AT
FREQUENCY RANGE (MHz)
10.000 to 13.999
14.000 to 39.999
40.000 to 66.000
MAX. ESR (Ω)
80
50
80
MODE
fundamental/AT
fundamental/AT
3
rd
overtone
DIMENSIONS
in inches [millimeters]
0.403 [10.24] max.
0.150 [3.81] max.
0.138 [3.5]
max.
0.435 [11.05] max.
0.183 [4.65]
max.
0.500 [12.7]
min.
0.192 ± 0.008
[4.88 ± 0.2]
Ø 0.017 ± 0.002
[0.43 ± 0.05]
Document Number: 35014
Revision: 19-Mar-10
For technical questions, contact:
frequency@vishay.com
www.vishay.com
1
XT49S
Vishay Dale
ORDERING INFORMATION
XT49S
MODEL
R
OTR
blank = standard
R = - 40 °C to + 85 °C
-20
LOAD
blank = series
-16 = 16 pF
-20 = 20 pF standard
-30 = 30 pF
-32 = 32 pF
SP
OPTIONS
blank = standard
SP = spacer
SL = sleeve
12M
FREQUENCY/MHz
e2
JEDEC LEAD (Pb)-FREE
STANDARD
Low Profile Holder Type Crystal Units
GLOBAL PART NUMBER
X
T
9
S
2
LOAD
0
A
PACKAGE
CODE
N
A
1
2
FREQUENCY
M
MODEL
OPTION
GLOBAL PART NUMBERING
X
T
9
S
2
0
A
N
A
4
0
M
MODEL NUMBER
XT9S = XT49S
XT9M = XT49M
XTU1 = XTUM1
LOAD
CAPACITANCE
18 = 18 pF
20 = 20 pF
NL = series
to be specified by
customer
PACKAGE
CODE
Tape and reel
G = RF5 (XT9S)
H = RF7 (XT9M)
Bulk
A = B04
(all models)
OPTIONS
NA = no additional
options
RR = extended
temperature
of - 40 °C to + 85 °C
Contact factory for
all other options
FREQUENCY
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
X
T
3
6
2
0
A
1
2
M
MODEL NUMBER
XT46 = XT46C
XT36 = XT36C
LOAD CAPACITANCE
18 = 18 pF
20 = 20 pF
NL = series
to be specified by
customer
PACKAGE
CODE
Tape and reel
H = RF7
Bulk
A = B04
(all models)
FREQUENCY
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
www.vishay.com
2
For technical questions, contact:
frequency@vishay.com
Document Number: 35014
Revision: 19-Mar-10
Legal Disclaimer Notice
www.vishay.com
Vishay
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.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
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.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of 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
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
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
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk and agree
to fully indemnify and hold Vishay and its distributors harmless from and against any and all claims, liabilities, expenses and
damages arising or resulting in connection with such use or sale, including attorneys fees, even if such claim alleges that Vishay
or its distributor was negligent regarding the design or manufacture of the part. Please contact authorized Vishay personnel to
obtain written terms and conditions regarding products designed for such applications.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by
any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners.
Material Category Policy
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the
definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council
of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment
(EEE) - recast, unless otherwise specified as non-compliant.
Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that
all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU.
Revision: 12-Mar-12
1
Document Number: 91000
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