XT49M
Vishay Dale
Low Profile SMD Type Crystal Units
FEATURES
•
•
•
•
•
•
Low cost
Industry standard
Wide frequency range
Excellent aging
Surface mount
100 % Lead (Pb)-free and RoHS compliant
RoHS
COMPLIANT
This part is a miniature AT cut strip crystal unit packaged for
surface mounting.
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER
Frequency Range
Frequency Tolerance
Temperature Stability
Operating Temperature Range
Storage Temperature Range
Shunt Capacitance
Load Capacitance
Insulator Resistance
Drive Level
Aging
SYMBOL
F
o
ΔF/Fo
TC
T
OPR
T
STG
C
o
CL
IR
DL
Fa
CONDITION
at 25 °C
ref to 25 °C
UNIT
MHz
ppm
ppm
°C
°C
pF
pF
MΩ
µW
ppm
MIN
3.200
±10
±10
-20
-40
10
500
100
-5.0
TYPICAL
±30
±30
MAX
66.000
±50
±50
+70
+85
7
Series
500
+5.0
Customer Specified
100 V
DC
at 25 °C, per year
EQUIVALENT SERIES RESISTANCE (ESR) AND MODE OF VIBRATION (MODE)
FREQUENCY RANGE (MHZ)
3.200 to 4.499
4.500 to 5.999
6.000 to 6.999
7.000 to 7.999
8.000 to 8.999
MAX ESR (Ω)
150
120
100
90
80
MODE
Fundamental/AT
Fundamental/AT
Fundamental/AT
Fundamental/AT
Fundamental/AT
0.403
[10.24] Max
FREQUENCY RANGE(MHZ)
9.000 to 9.999
10.000 to 12.999
13.000 to 30.000
30.000 to 66.000
MAX ESR (Ω)
60
50
40
80
MODE
Fundamental/AT
Fundamental/AT
Fundamental/AT
3
rd
Overtone
DIMENSIONS
in inches [millimeters]
CRYSTAL UNIT
0.150
[3.8] Max
0.008
[0.2] Max
0.150 [3.8] Max
0.177
[4.5] Max
0.012 [0.3] Max
0.508 ± 0.016 [12.9 ± 0.4]
0.449 ± 0.012 [11.4 ± 0.3]
0.354 [9.0]
INSULATION BASE
CRYSTAL LEAD
0.031 ± 0.012
[0.8 ± 0.3]
0.185 ± 0.012
[4.7 ± 0.3]
SOLDER PATTERN
0.201 ± 0.020 [5.1 ± 0.5]
0.078
[2.0]
0.236 [6.0]
ORDERING INFORMATION
XT49 M
MODEL
R
OTR
Blank = Standard
R = -40 °C to +85 °C
-20
LOAD
Blank = Series
-20 = 20 pF
-30 = 30 pF
-32 = 32 pF
20 M
FREQUENCY/MHz
e2
JEDEC
LEAD (Pb)-FREE
STANDARD
GLOBAL PART NUMBER
X
T
9
M
2
0
A
N
A
2
0
M
MODEL
LOAD
STABILITY
PACKAGE
CODE
OPTIONS
FREQUENCY
Document Number: 35012
Revision: 18-Oct-07
For technical questions contact: frequency@vishay.com
www.vishay.com
13
Legal Disclaimer Notice
Vishay
Disclaimer
All product specifications and data are subject to change without notice.
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 herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
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.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such
applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding
products designed for such applications.
Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000
Revision: 18-Jul-08
www.vishay.com
1
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