XT49U
Vishay Dale
Resistance Welded Holder Type Crystal Unit
FEATURES
•
Low cost
•
Industry standard
•
Excellent aging
•
Wide frequency range
•
“AT” cut crystal
The XT49U series is an industry standard AT cut crystal
housed in a HC-49U package. It is our standard resistance
weld type quartz crystal
.
•
100 % Lead (Pb)-free and RoHS compliant
RoHS
COMPLIANT
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER
Frequency Range
Frequency Tolerance
Temperature Stability
Operating Temperature Range
Storing Temperature Range
Shunt Capacitance
Load Capacitance
Insulator Resistance
Drive Level
Aging
SYMBOL
F
O
ΔF/F
O
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
1.8432
± 10
± 10
- 20
- 40
10
500
100
- 5.0
TYPICAL
± 30
± 30
MAX
125
± 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)
1.8432 to 1.999
2.000 to 2.999
3.000 to 3.499
3.500 to 3.999
4.000 to 4.999
5.000 to 5.999
MAX ESR (Ω)
650
500
250
150
100
80
MODE
Fundamental
Fundamental
Fundamental
Fundamental
Fundamental
Fundamental
0.403
[10.24] Max
FREQUENCY RANGE (MHz)
6.000 to 7.999
8.000 to 12.999
13.000 to 32.000
24.000 to 29.999
30.000 to 79.999
80.000 to 125.000
0.150
[3.80] Max
0.435
[11.05] Max
0.183
[4.65] Max
0.530
[13.46]
Max
MAX ESR (Ω)
50
35
25
60
40
90
MODE
Fundamental
Fundamental
Fundamental
3
rd
Overtone
3
rd
Overtone
5
th
Overtone
DIMENSIONS
in inches [millimeters]
0.500
[12.7] Min
0.192 0.008 [4.88 ± 0.2]
Ø 0.017 ± 0.002 [0.43 + 0.05]
ORDERING INFORMATION
XT49U
MODEL
R
OTR
Blank = Standard
R = - 40 °C to + 85 °C
-20
LOAD
Blank = Series
- 16 = 16 pF
- 20 = 20 pF
- 30 = 30 pF
- 32 = 32 pF
SP
OPTIONS
Blank = Standard
SL = Sleeve
SP = Spacer
M
FREQUENCY/MHz
e2
JEDEC Lead (Pb)-free
STANDARD
GLOBAL PART NUMBER
X
T
9
U
2
0
A
N
A
4
M
MODEL
LOAD
PACKAGE
CODE
OPTION
FREQUENCY
www.vishay.com
10
For technical questions contact: frequency@vishay.com
Document Number: 35015
Revision: 17-Jan-06
Legal Disclaimer Notice
Vishay
Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,
or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's
terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express
or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness
for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify Vishay for any damages resulting from such improper use or sale.
Document Number: 91000
Revision: 08-Apr-05
www.vishay.com
1
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