CX MINIATURE CRYSTALS
9.6MHz
to 160MHz
MINIATURE AT-CUT
QUARTZ
CRYSTAL
EUROQUARTZ
Telephone:
+44(0)1460 230000
Fax:
+44(0)1460 230001
Email: sales@euroquartz.co.uk
Web: www.euroquartz.co.uk
CX-2
Page
1 of 2
General Description
The CX-2 AT-cut quartz crystal is a high quality, miniature
resonator, hermetically sealed in a rugged, miniature ceramic
package, a quarter the size of an eight pin dual-in-line. The CX-2
crystal is manufactured utilizing a photo-lithographic process,
ensuring consistency and repeatability of electrical characteristics.
Low-profile, hermetically sealed package
Available with glass or ceramic lid
High shock and vibration resistance
Low ageing
Custom designs available
Full military environmental testing available
Specification
-02 End Lead
2.39
1
2
3
5.21
A
1.27
5.08
2.54
-03 Side Lead
6.60
2.39 1
6.60
5.33
2
-04 Side Lead
6.60
3
3
1
2
Outline and Dimensions
Notes:
1. Terminal 1 is electrically connected to terminal 3.
2. Lead Dimensions: width 0.33mm typical, thickness 0.18mm.
3. A = Glass Lid - 2.03mm max.
Ceramic Lid - 2.41mm max.
Equivalent Circuit
L
R
1
C
C
2
9.6MHz to 70MHz Fund.
70MHz to 160MHz 3rd O/T
see table.
Motional Resistance (R
):
see table
Motional Capacitance (C
):
see table
Quality Factor (Q):
see table
Shunt Capacitance (C
):
A ±0.01% (±100ppm)
Calibration Tolerance*:
B ±0.1%
C ±1.0%
20pF (or other as specified)
Load Capacitance:
500
m
W max.
Drive Level:
-10° to +70°C from ±10ppm
Temperature Stability**:
-40° to +85°C from ±20ppm
-55° to +125°C from ±30ppm
±5ppm max.
Ageing, first year:
3,000g 0.2ms, ½ sine
Shock, survival***:
20g rms 10 - 2,000Hz
Vibration, survival:
-10°~+70°C (commercial)
Operating Temperature:
-40°~+85°C (industrial)
-55°~+125°C (military)
-55°C~+125°C
Storage Temperature:
Lead to Package temp. not to
Process Temperature:
exceed 175°C
Glass lid to package seal rim
temp. not to exceed 210°C
Specifications are typical at 25°C unless otherwise indicated.
Note: temperature stability characteristics follow that of AT-cut
thickness-shear mode.
Frequency Range:
L
Motional Inductance
C
Motional Capacitance C
Shunt Capacitance
R
Motional Resistance
* Closer calibration available, from ±5ppm
** Does not include calibration tolerance
*** Higher shock version available
CX-2 Motional Parameters, Q and C
Motional
Frequency
Resistance
R
(
Motional
Capacitance
C
(fF)
Quality
Factor
000s
Shunt
Capacitance
C
(pF)
9
)
10.0MHz
32MHz
155MHz
60
20
50
2.8
7.8
0.5
95
36
41
1.4
2.4
3.2
CX MINIATURE CRYSTALS
9.6MHz
to 160MHz
MINIATURE AT-CUT
QUARTZ
CRYSTAL
EUROQUARTZ
Telephone:
+44(0)1460 230000
Fax:
+44(0)1460 230001
Email: sales@euroquartz.co.uk
Web: www.euroquartz.co.uk
CX-2
Page
2 of 2
Package Handling
The CX crystal is hermetically sealed in a ceramic package.
Normal handling and soldering precautions for small, low thermal
mass parts are adequate when installing or testing CX crystals.
The crystals may be wave soldered, taking proper precautions to
avoid desoldering the leads. A slow machine rate or too high a
pre-heat temperature or solder bath temperature can damage the
crystals. Lead to package solder interface temperature should not
exceed 175°C, and glass lid to package seal rim temperature
should not exceed 210°C. Should the seal rim temperature exceed
these limits the package may lose its hermeticity. Loss of
hermeticity results in a decrease of frequency and increase in
motional resistance.
Typical Application
Conventional HCMOS Pierce Oscillator Circuit
R
B
Amplifier
Buffer
Osc.
Freq. (Fo)
C
5
R
)
C
CX-2
C
Packaging
CX-2-Leaded - Bulk Pack (Standard)
Tray Pack (Optional)
Order Code
Total
O.T.=3rd O.T. Mode
Frequency
Frequency
Tolerance
CX-2
Blank = Fundamental
-03
-02
-03
-04
32MHz
( A
Calibration
Tolerance*
@ 25°C
A, B, C
/ 25ppm / 50ppm / I
Frequency
Stability
over
Temperature
Range
Range:
)
S if special
or custom design
Blank if standard
C = Ceramic Lid
Blank = Glass Lid
Side leads
Temperature
C = Commercial
I = Industrial
M = Military
S = Specify
*For other calibration tolerances
enter figure in ppm
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