Model XT49U
Vishay Dale
Quartz Crystals
1.8432MHz to 60.0MHz
FEATURES
•
3rd lead option.
•
Insulating sleeve option.
•
Hermetically sealed.
STANDARD ELECTRICAL SPECIFICATIONS
FREQUENCY
RANGE (MHz)
1.8432 - 1.999
2.0 - 2.999
3.0 - 3.499
3.5 - 3.999
4.0 - 4.999
5.0 - 5.999
6.0 - 7.999
8.0 - 12.999
13.0 - 30.999
31.0 - 60.0
MODE OF
VIBRATION
“AT” Fundamental
“AT” Fundamental
“AT” Fundamental
“AT” Fundamental
“AT” Fundamental
“AT” Fundamental
`“AT” Fundamental
“AT” Fundamental
“AT” Fundamental
“AT” 3rd Overtone
ESR MAX.
(Ohms)
650
500
250
150
100
80
50
35
25
40
STANDARD SPECIFICATIONS
Operating Temperature Range:
- 20°C to + 70°C.
(- 40°C to + 85°C optional).
Frequency Range:
1.8432MHz to 60.0MHz.
Frequency Tolerance:
±
30PPM @ + 25°C
±
3°C (typical).
Temperature Stability:
±
30PPM (typical).
Storage Temperature:
- 40°C to 85°C.
Mode of Vibration:
“AT” Fundamental, “AT” 3rd Overtone.
Load:
10 to 32pF or series resonant.
Drive Level:
1mW maximum.
Shunt Capacitance:
7pF maximum.
Seal:
Resistance weld.
DIMENSIONAL CONFIGURATIONS
[Numbers in brackets indicate millimeters]
.453 [11.50]
Max.
.197
[5.0]
Max.
.406 [10.3]
Max.
.017
[0.43]
.532 [13.5]
Max.
Optional 3rd Lead
.020
[.51]
.788 [20.0]
Min.
.192
±
.008
[4.88
±
0.2]
1.0
[25.4]
HOW TO ORDER
XT49U
MODEL
R
OTR
Blank = Standard
R = - 40°C to + 85°C
- 20
LOAD
Blank = Series
- 16 = 16pF
- 20 = 20pF
- 30 = 30pF
- 32 = 32pF
W3
OPTIONS
Blank = Standard
W3 = 3rd Lead
SL = Sleeve
SP = Spacer
CT = Cut Leads
4M
FREQUENCY/MH
Z
www.vishay.com
8
Document Number 35015
Revision 06-Jan-00
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