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CX-2C-SM21.0B Datasheet(PDF) 1 Page - EUROQUARTZ limited

Part No. CX-2C-SM21.0B
Description  CX MINIATURE CRYSTALS
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Maker  EUROQUARTZ [EUROQUARTZ limited]
Homepage  http://www.euroquartz.co.uk
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CX-2-SM
760kHz to 1.35MHz
LOW-PROFILE
SMD CRYSTAL
CX-2-SM
760kHz to 1.35MHz
LOW-PROFILE
SMD CRYSTAL
General Description
The miniature CX-2-SM quartz crystal is a high quality leadless
device suitable for mounting on printed circuit boards or hybrid
substrates. The CX-2-SM is hermetically sealed in a rugged,
leadless ceramic package. The crystal has been designed for
surface-mounting on printed circuit boards or hybrid circuits. The
crystal is manufactured using a photo-lithographic process,
yielding consistently high quality production parts.







Extensional mode
High shock resistance
Designed for low-power applications
Compatible with hybrid or PC board packaging
Low ageing
Full military environmental testing available
Ideal for battery operated applications
Specification

LR
C
C



12
R
L

CC
Mot ional Resistance
Motional Capacitance
Motional Inductance
Shunt Capacitance
Equivalent Circuit
Solder Pad Layout
Outline
A
BC
H
F
D
E
(TOP)
G
I
3
2
1
Dimension
A
6.60
6.99
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
CX-2-SM Package Dimensions
Typical
(mm)
Maximum
(mm)
Dimension
“C”
SM1
1.65
1.91
SM2
1.70
1.96
SM3
1.78
2.03
Glass Lid
(mm max.)
Ceramic Lid
(mm max.)
Terminal 1 is electrically connected to terminal 3
2.67
0.6
2.87
12
Frequency Range:
Functional Mode:
Calibration Tolerance*:
Load Capacitance:
Motional Resistance (R ):
Motional Capacitance (C ):
Quality Factor (Q):
Shunt Capacitance (C ):
Drive Level:
Turning Point (T )**:
760kHz to 1.35MHz
Extensional
A ±0.05% (±500ppm)
B ±0.1%
C ±1.0%
7pF
5k max.
1.2fF
150k
1.0pF
3 W max.
35°C
Note: Frequency (f) deviation from frequency (f ) @ turning point
temperature (T ):




W
m
0
0
Temperature Coefficient:
Ageing, first year:
Shock, survival:
Vibration, survival:
Operating Temperature:
Storage Temperature:
Process Temperature:
-0.035ppm/°C
±5ppm max.
1000g 0.3ms, ½ sine
10g rms, 20-1,000Hz 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.
*
Tighter frequency calibration available
**
Other turning point available
2
f-fo
fo
= k(T-To)
+44(0)1460 230000
+44(0)1460 230001
sales@euroquartz.co.uk
www.euroquartz.co.uk
Telephone:
Fax:
Email:
Web:
EUROQUARTZ
CX MINIATURE CRYSTALS
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