EUROQUARTZ CX-2OT-SM332B Cx miniature crystal Datasheet

CX MINIATURE CRYSTALS
CX-2-SM
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
SMD CRYSTAL
1 of 2
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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.
A
H
C
Load Capacitance:
Motional Resistance (R1):
Motional Capacitance (C1):
Quality Factor (Q):
Shunt Capacitance (C0):
Drive Level:
Temperature Stability**:
3 F
D
E
Terminal 1 is electrically connected to terminal 3
Outline
CX-2-SM Package Dimensions
Dimension
Typical
Maximum
(mm)
(mm)
A
6.60
B
2.39
2.74
C
-
see below
D
0.89
1.14
E
1.50
1.75
F
1.27
1.52
G
2.67
2.92
H
3.94
4.19
I
5.33
5.59
Ageing, first year:
Shock, survival***:
Vibration, survival:
Operating Temperature:
6.99
Dimension
Glass Lid
Ceramic Lid
“C”
(mm max.)
(mm max.)
SM1
1.65
1.91
SM2
1.70
1.96
SM3
1.78
2.03
Storage Temperature:
Process Temperature:
Specifications are typical at 25°C unless otherwise indicated.
Frequency stability characteristics follow that of AT-cut, thicknessshear 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 C0
Frequency
Equivalent Circuit
1
C1
R1
C0
R 1 Motional Resistance
Motional
Motional
Quality
Shunt
Resistance
Capacitance
Factor
Capacitance
C1 (fF)
‘000s
C0 (pF)
95
1.4
R1 (
10.0MHz
L1
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
2
I
G
B
Specification
Frequency Range:
Calibration Tolerance*:
1
(TO P)
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
L 1 Motional Inductance
C 1 Motional Capacitance C0 Shunt Capacitance
2
W)
60
2.8
32MHz
20
7.8
36
2.4
155MHz
50
0.5
41
3.2
CX MINIATURE CRYSTALS
CX-2-SM
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
SMD CRYSTAL
2 of 2
Circuit Design
Packaging
Conventional HCMOS Pierce Oscillator Circuit
Rf
Amplifier
CS
C1
Buffer
Osc.
Freq. (Fo)
RA
CX-2
CX-1-SM - Bulk Pack (Standard)
- 16mm tape, 178mm or 330mm reels (Optional)
per EIA 481
- Tray Pack (Optional)
C2
Solder Pad Layout
2.67
Terminations
Designation
2.87
1
2
0.6
Termination
SM1
Gold Plated
SM2
Nickel, Silver Plated
SM3
Nickel, Solder Plated and Solder Dipped
Order Code
CX-2
O.T.=3rd O.T. Mode
Blank = Fundamental
Total
Frequency
Tolerance
Frequency
-SM1 32MHz
“S” if special
C = Ceramic Lid
SM1
or custom design Blank = Glass Lid SM2
Blank if standard
SM3
( A
Calibration
Tolerance*
@ 25°C
A, B, C
/ 25ppm / 50ppm / I
Frequency
Stability
over
Temperature
Range
*For other calibration tolerances
enter figure in ppm
)
Temperature
Range:
C = Commercial
I = Industrial
M = Military
S = Specify
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