XT49U
Vishay Dale
Resistance Welded Holder Type Crystal Unit
FEATURES
•
Low cost
•
Industry standard
•
Excellent aging
•
Wide frequency range
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
.
•
“AT” cut 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
MODEL
9
U
2
LOAD
0
A
PACKAGE
CODE
N
A
OPTION
4
M
FREQUENCY
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10
For technical questions contact: frequency@vishay.com
Document Number: 35015
Revision: 01-Jun-06
XT49U
Resistance Welded Holder Type Crystal Unit
Vishay Dale
GLOBAL PART NUMBERING
X
T
9
S
2
0
A
N
A
4
0
M
MODEL NUMBER
XT9U = XT49U
XT9S = XT49S
XT9SL = XT49SL
XT9M = XT49M
XT9ML = XT49ML
XTU1 = XTUM1
XT36 = XT36C
XT57 = XT57C
XT46 = XT46C
Example: XT49S-20 40M
LOAD
CAPACITANCE
18 = 18 pF
20 = 20 pF
NL = Series
to be specified
by customer
PACKAGE
CODE
TAPE AND REEL
G = RF5
(XT9U, XT9S, XT9SL)
H = RF7
(XT9M, XT9ML, XT36,
XT57, XT46)
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
X
T
2
6
T
T
A
3
2
K
7
6
8
MODEL NUMBER
XT26T = XT26T
XT38T = XT38T
OPERATING
TEMPERATURE
(OTR)
T = 0 °C to + 70 °C
R = - 40 °C to + 85 °C
PACKAGE
CODE
BULK
A = B04
(all models)
FREQUENCY
32K768 = 32.768 kHz
K is used as decimal place holder
in frequency
Example: XT26T 32.768K
X
T
3
8
P
A
A
3
2
K
7
6
8
MODEL NUMBER
XT32P = XT32P
XT38P = XT38P
PAD LAYOUT
A=A
B=B
(see datasheet)
PACKAGE
CODE
BULK
A = B04
(all models)
FREQUENCY
32K768 = 32.768 kHz
K is used as decimal place holder
in frequency
Example: XT38PA 32.768K
Document Number: 35015
Revision: 01-Jun-06
For technical questions contact: frequency@vishay.com
www.vishay.com
2
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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