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11
XT49M
Vishay Dale
Document Number 35012
Revision 18-Dec-01 For technical questions, contact frequency@vishay.com
FEATURES
•Low profile.
•Hermetically sealed.
•Tape and reel packaging.
STANDARD SPECIFICATIONS
Operating Temperature Range: 0°C to + 70°C.
(- 40°C to + 85°C optional).
Frequency Range: 3.579MHz to 66.0MHz.
Frequency Tolerance: ± 50ppm @ + 25°C ± 3°C (typical).
Temperature Stability: ± 50ppm (typical).
Storage Temperature: - 40°C to 85°C.
Mode of Vibration: “AT” Fundamental, or “AT” 3rd Overtone.
Load: 10 to 32pF or series resonant.
Drive Level: 1mW maximum.
Shunt Capacitance: 7pF maximum.
Seal: Resistance weld.
Quartz Crystals
3.579MHz to 66.0MHz
STANDARD ELECTRICAL SPECIFICATIONS
DIMENSIONS in inches [millimeters]
ORDERING INFORMATION
0.150 [3.80]
Max.
0.450 ± 0.024
[11.4 ± 0.6]
0.039 [1.0]
Max.
0.178 ± 0.008
[4.5 ±0.2]
0.485 ± 0.024
[12.3 ± 0.6]
0.406 [10.3]
Max.
0.177 [4.5]
Max.
XT49M
MODEL 20M
FREQUENCY/MHZ
- 20
LOAD
Blank = Series
- 20 = 20pF
- 30 = 30pF
- 32 = 32pF
FREQUENCY MODE OF ESR MAX.
RANGE (MHz) VIBRATION (Ohms)
3.579 - 3.999 “AT” Fundamental 150
4.0 - 4.499 “AT” Fundamental 150
4.5 - 4.999 “AT” Fundamental 120
5.0 - 5.999 “AT” Fundamental 120
6.0 - 6.999 “AT” Fundamental 100
7.0 - 7.999 “AT” Fundamental 90
8.0 - 8.999 “AT” Fundamental 80
9.0 - 9.999 “AT” Fundamental 60
10.0 - 12.999 “AT” Fundamental 50
13.0 - 19.999 “AT” Fundamental 40
20.0 - 30.0 “AT” Fundamental 40
30.001 - 66.0 “AT” 3rd Overtone 80
Blank = Standard
R = - 40°C to + 85°C
R
OTR
