EUROQUARTZ CX-3SC-SM232B Cx miniature crystal Datasheet

CX MINIATURE CRYSTALS
CX-3-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
LOW-PROFILE
MINIATURE AT-CUT
SMD CRYSTAL
1 of 2
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General Description
CX-3-SM AT-cut crystals are leadless devices designed for surfacemounting on printed circuit boards or hybrid circuits. The crystals
are low profile with a very small land area.
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Designed for surface-mount applications using
infrared, vapour phase, wave solder or epoxy
mount techniques
Ideal for use with microprocessors
Designed for low power applications
Compatible with hybrid or PCB mounting
Low ageing
Full military environmental testing available
Custom designs available
Specification
9.6MHz to 160MHz
A: ±0.01% (±100ppm)
B: ±0.1%
C: ±1.0%
20pF (unless other specified)
Load Capacitance:
see table below
Motional Resistance (R1):
see table below
Motional Capacitance (C1):
see table below
Quality Factor (Q):
see table below
Shunt Capacitance (C0):
500mW max.
Drive Level:
-10° to +70°C from ±10ppm
Frequency Stability Temp**:
-40° to +85°C from ±20ppm
-55° to +125°C from ±30ppm
±5ppm max.
Ageing, first year:
3,000g peak, 0.3ms, ½ sine
Shock, survival***:
20g rms 10-2,000Hz random
Vibration, survival:
-10°~+70°C (commercial)
Operating Temperature:
-40°~+85°C (industrial)
-55°~+125°C (military)
-55°C~+125°C
Storage Temperature:
260°C for 20 seconds
Max. Process Temperature:
Note: temperature stability characteristics follow thos of AT-cut
thickness-shear mode.
Frequency Range:
Calibration Tolerance*:
D
(TO P)
A
D
D
B
C
E
Outline
CX-3-SM Package Dimensions
Dimension
Typical
Maximum
(mm)
(mm)
A
6.73
7.11
B
2.62
2.90
C
-
see below
D
1.27
1.52
E
1.32
1.57
Dimension
Glass Lid
Ceramic Lid
“C”
(mm max.)
(mm max.)
SM1
1.47
1.75
SM2
1.52
1.80
SM3
1.60
1.88
Specifications are typical at 25°C unless otherwise indicated.
*
Closer frequency calibration available
**
Other turning point available
*** Higher shock version available
Equivalent Circuit
1
L1
CX-3-SM Motional Parameters, Q and C0
C1
R1
2
Frequency
Motional
Motional
Quality
Shunt
Resistance
Capacitance
Factor
Capacitance
C1 (fF)
‘000s
C0 (pF)
95
1.4
R1 (
C0
L 1 Motional Inductance
C 1 Motional Capacitance C0 Shunt Capacitance
R 1 Motional Resistance
10.0MHz
W)
60
2.8
32MHz
20
7.8
36
2.4
155MHz
50
0.5
41
3.2
CX MINIATURE CRYSTALS
CX-3-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
LOW-PROFILE
MINIATURE AT-CUT
SMD CRYSTAL
2 of 2
Circuit Design
Conventional HCMOS Pierce Oscillator Circuit
Rf
Amplifier
Osc.
Freq. (Fo)
RA
CS
C1
Buffer
CX-2
C2
Solder Pad Layout
1.78
3.05
5.46
Terminations
Packaging
CX-3H-SM- Bulk Pack (Standard)
- 16mm tape, 178mm or 330mm reels (Optional)
per EIA 481
- Tray Pack (Optional)
Designation
Termination
SM1
Gold Plated
SM2
Nickel, Silver Plated
SM3
Nickel, Solder Plated and Solder Dipped
Order Code
CX-3
O.T.=3rd O.T. Mode
Blank = Fundamental
“S” if special
or custom design
Blank if standard
Total
Frequency
Tolerance
Frequency
-SM1 32MHz
SM1
SM2
SM3
C = Ceramic Lid
Blank = Glass Lid
( 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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