EUROQUARTZ CX-2-AT Cx miniature crystal Datasheet

CX MINIATURE CRYSTALS
CX-2
EUROQUARTZ
Telephone:
+44(0)1460 230000
Fax:
+44(0)1460 230001
Email: [email protected]
Web: www.euroquartz.co.uk
Page
9.6MHz to 160MHz
MINIATURE AT-CUT
QUARTZ CRYSTAL
1 of 2
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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
2.39 1
2
-04 Side Lead
6.60
3
3
1
2
-03 Side Lead
6.60
6.60
5.33
3
5.21
A
5.08
2.54
1.27
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
1
L1
C1
R1
C0
L 1 Motional Inductance
C 1 Motional Capacitance C0 Shunt Capacitance
R 1 Motional Resistance
9.6MHz to 70MHz Fund.
70MHz to 160MHz 3rd O/T
see table.
Motional Resistance (R1):
see table
Motional Capacitance (C1):
see table
Quality Factor (Q):
see table
Shunt Capacitance (C0):
A ±0.01% (±100ppm)
Calibration Tolerance*:
B ±0.1%
C ±1.0%
20pF (or other as specified)
Load Capacitance:
500mW 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:
2
* Closer calibration available, from ±5ppm
** Does not include calibration tolerance
*** Higher shock version available
CX-2 Motional Parameters, Q and C0
Frequency
Motional
Motional
Quality
Shunt
Resistance
Capacitance
Factor
Capacitance
C1 (fF)
‘000s
C0 (pF)
95
1.4
R1 (
10.0MHz
W)
60
2.8
32MHz
20
7.8
36
2.4
155MHz
50
0.5
41
3.2
CX MINIATURE CRYSTALS
CX-2
EUROQUARTZ
Telephone:
+44(0)1460 230000
Fax:
+44(0)1460 230001
Email: [email protected]
Web: www.euroquartz.co.uk
Page
9.6MHz to 160MHz
MINIATURE AT-CUT
QUARTZ CRYSTAL
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
Rf
Amplifier
Osc.
Freq. (Fo)
RA
CS
C1
Buffer
CX-2
C2
Packaging
CX-2-Leaded - Bulk Pack (Standard)
Tray Pack (Optional)
Order Code
Total
O.T.=3rd O.T. Mode
CX-2
Blank = Fundamental
“S” if special
C = Ceramic Lid
or custom design
Blank = Glass Lid
Blank if standard
Frequency
Frequency
-03
32MHz
Tolerance
( A
/ 25ppm / 50ppm / I
Side leads
Calibration
Frequency
-02
Tolerance*
Stability
-03
@ 25°C
over
-04
A, B, C
Temperature
Range
*For other calibration tolerances
enter figure in ppm
)
Temperature
Range:
C = Commercial
I = Industrial
M = Military
S = Specify
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