CX MINIATURE CRYSTALS
EUROQUARTZ
Telephone:
Fax:
+44(0)1460 230000
+44(0)1460 230001
sales@euroquartz.co.uk
www.euroquartz.co.uk
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CX-2-SM
9.6MHz ttoo 116600MMHHzz
MMIINNIIAATTUURREE AATT--CCUUTT
SMD CCRRYYSSTTAALL
1 of 2
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Surface-mount - infrared, vapour phase,
wave solder or epoxy mount techniques
Low profile, hermetically sealed package
Available with glass or ceramic lid
High shock and vibration resistance
Custom designs available
General Description
The miniature CX-2-SM AT-cut crystals in leadless ceramic
packages have been designed for surface-mounting on printed
circuit boards or hybrid circuits. These crystal have a low profile
and a very small footprint. Manufactured by a photo-lithographic
process, the CX-2-SM is a robust crystal that has gained
widespread acceptance in the industry.
Full military environmental testing available
Specification
Frequency Range:
Calibration Tolerance*:
9.6MHz to 160MHz
1
A
B
±0.01% (±100ppm)
±0.1%
±1.0%
2
A
I
C
H
G
Load Capacitance:
20pF (unless other required)
See table
See table
3
F
Motional Resistance (R ):
Motional Capacitance (C ):
Quality Factor (Q):
Shunt Capacitance (C ):
Drive Level:
Temperature Stability**:
D
B
C
E
Terminal 1 is electrically connected to terminal 3
See table
See table
Outline
500 W max.
-10° to +70°C from ±10ppm
-40° to +85°C from ±20ppm
-55° to +125°C from ±30ppm
±5ppm max.
CX-2-SM Package Dimensions
Ageing, first year:
Shock, survival***:
Vibration, survival:
Operating Temperature:
3000g 0.3ms, ½ sine
20g rms 10-2,000Hz random
-10°~+70°C (commercial)
-40°~+85°C (industrial)
-55°~+125°C (military)
-55°C~+125°C
A
B
C
D
E
6.60
2.39
-
6.99
2.74
see below
1.14
Storage Temperature:
Process Temperature:
260°C for 20 seconds
0.89
1.50
1.27
2.67
3.94
5.33
1.75
Specifications are typical at 25°C unless otherwise indicated.
Frequency stability characteristics follow that of AT-cut, thickness-
shear mode crystals.
F
1.52
G
H
I
2.92
*
**
**
Closer calibration available, as low as ±5ppm
Does not include calibration tolerance
A higher shock version is available, refer to data sheet for
the model CX-1HG
4.19
5.59
SM1
SM2
SM3
1.65
1.70
1.78
1.91
1.96
2.03
CX-2-SM Motional Parameters, Q and C
Equivalent Circuit
10.0MHz
32MHz
60
20
50
2.8
7.8
0.5
95
36
41
1.4
2.4
3.2
L
R
C
C
1
2
155MHz
R
C
Motional Resistance
Motional Capacitance
L
Motional Inductance
Shunt Capacitance
C