CX-2-SM1 Datasheet, PDF (1/2 Pages) EUROQUARTZ limited – CX MINIATURE CRYSTALS

CX MINIATURE CRYSTALS
CX-2-SM
9.6MHz to 160MHz
MINIATURE AT-CUT
SMD CRYSTAL
Page
1 of 2
EURO QUARTZ
Telephone: [phone]
Fax: [phone]
Email: [e-mail]
Web: www.euroquartz.co.uk
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.
 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
 Full military environmental testing available
Specification
1
A ^{(TO P)}
I
2
G
H
3F
B
C
D
E
Terminal 1 is electrically connected to terminal 3
Outline
CX-2-SM Package Dimensions
Dimension
A
B
C
D
E
F
G
H
I
Typical
(mm)
6.60
2.39
-
0.89
1.50
1.27
2.67
3.94
5.33
Maximum
(mm)
6.99
2.74
see below
1.14
1.75
1.52
2.92
4.19
5.59
Dimension
“C”
SM1
SM2
SM3
Glass Lid
(mm max.)
Ceramic Lid
(mm max.)
1.65
1.70
1.78
1.91
1.96
2.03
Equivalent Circuit
1
L
C
R
2
C
Frequency Range:
Calibration Tolerance*:
Load Capacitance:
Motional Resistance (R):
Motional Capacitance (C):
Quality Factor (Q):
Shunt Capacitance (C):
Drive Level:
Temperature Stability**:
Ageing, first year:
Shock, survival***:
Vibration, survival:
Operating Temperature:
Storage Temperature:
Process Temperature:
9.6MHz to 160MHz
A ±0.01% (±100ppm)
B ±0.1%
C ±1.0%
20pF (unless other required)
See table
See table
See table
See table
500mW max.
-10° to +70°C from ±10ppm
-40° to +85°C from ±20ppm
-55° to +125°C from ±30ppm
±5ppm max.
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
260°C for 20 seconds
Specifications are typical at 25°C unless otherwise indicated.
Frequency stability characteristics follow that of AT-cut, thickness-
shear mode crystals.
*
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
CX-2-SM Motional Parameters, Q and C
Frequency
10.0MHz
32MHz
155MHz
Motional
Resistance
9 R ( )
Motional
Capacitance
C (fF)
60
2.8
20
7.8
50
0.5
Quality
Factor
‘000s
95
36
41
Shunt
Capacitance
C (pF)
1.4
2.4
3.2
R Motional Resistance L Motional Inductance
C Motional Capacitance C Shunt Capacitance