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-1-SM
8MHz 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-1-SM crystals in leadless ceramic packages have
been designed for surface-mounting on printed circuit boards or
hybrid circuits. It is a robust crystal that has gained widespread
acceptance in the industry.
Full military environmental testing available
Specification
Frequency Range:
Calibration Tolerance*:
8MHz to 160MHz
A
B
±0.01% (±100ppm)
±0.1%
±1.0%
D
C
A
Load Capacitance:
20pF (unless other required)
See table
See table
E
D
Motional Resistance (R ):
Motional Capacitance (C ):
Quality Factor (Q):
Shunt Capacitance (C ):
Drive Level:
Temperature Stability**:
B
See table
See table
C
E
500 W max.
Outline
-10° to +70°C from ±10ppm
-40° to +85°C from ±20ppm
-55° to +125°C from ±30ppm
±5ppm max.
CX-1-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
8.00
3.56
-
8.38
3.94
Storage Temperature:
Process Temperature:
260°C for 20 seconds
C
D
E
see below
1.40
1.14
1.52
Specifications are typical at 25°C unless otherwise indicated.
The characteristics of the frequency stability parameter follow that of
AT-cut, thickness-shear mode crystals.
1.78
*
**
**
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
SM1
SM2
SM3
1.65
1.70
1.78
1.78
1.83
1.90
CX-1 Motional Parameters, Q and C
Equivalent Circuit
L
R
C
C
1
2
10.0MHz
32MHz
50
20
50
5.5
7.8
0.5
80
36
41
2.2
2.6
3.2
155MHz
R
C
Motional Resistance
Motional Capacitance
L
Motional Inductance
Shunt Capacitance
C