CX-2H-SM
16kHz to 600kHz
MINIATURE SMD CRYSTAL
FOR SERIES OSCILLATORS
CX-2H-SM
16kHz to 600kHz
MINIATURE SMD CRYSTAL
FOR SERIES OSCILLATORS
General Description
The miniature CX-2H-SM quartz crystal is a high quality tuning-
fork resonator for use in series (two cascaded inverters) oscillators.
The CX-2H-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 CX-2H-
SM crystal is manufactured using a photo-lithographic process,
yielding consistently high quality production parts.
Miniature tuning-fork design
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
1
LR
C
0
1
12
R
1
L
1
CC0
Mot ional Resistance
Motional Capacitance
Motional Inductance
Shunt Capacitance
Equivalent Circuit
Frequency Range:
Calibration Tolerance*:
Motional Resistance (R ):
Motional Capacitance (C ):
Quality Factor (Q):
Shunt Capacitance (C ):
Drive Level:
Turning Point (T )**:
Temperature Coefficient:
Ageing, first year:
Shock, survival***:
Vibration, survival***:
Operating Temperature:
Storage Temperature:
Process Temperature:
16kHz to 600kHz
A, B or C (see table)
Figure 1
Max.: 16 ~ 169.9kHz, 2x typ.
170~600kHz, 2.5x typ.
Figure 2
Figure 3
Min. is 0.25x typ.
2.0pF max.
16~24.98kHz 1.5 W max.
25~600kHz 3.0 W max.
Figure 4
-0.035ppm/°C
±5ppm max.
1,500g 0.3ms, sine
10g rms, 20-2,000Hz 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
***
Higher shock and vibration version available
Calibration
Frequency Range (kHz)
A
±0.003% ±0.005%
±0.01%
±0.02%
B
±0.01%
±0.02%
±0.05%
C
±0.1%
±0.2%
±0.5%
CX-1H-SM Crystal Calibration Tolerance at 25°C
16~74.9
75~169.9 170~249.9
250~600
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
+44(0)1460 230000
+44(0)1460 230001
sales@euroquartz.co.uk
www.euroquartz.co.uk
Telephone:
Fax:
Email:
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EUROQUARTZ
CX MINIATURE CRYSTALS
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