CX MINIATURE CRYSTALS
10kHz
to 600kHz
MINIATURE SMD CRYSTAL
FOR PIERCE OSCILLATORS
EUROQUARTZ
Telephone:
+44(0)1460 230000
Fax:
+44(0)1460 230001
Email: sales@euroquartz.co.uk
Web: www.euroquartz.co.uk
CX-1V-SM
Page
1 of 2
General Description
The miniature CX-1V-SM quartz crystal is a high quality tuning-
fork resonator for use in Pierce (single inverter) oscillators. The CX-
1V-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-1-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
Frequency Range:
Calibration Tolerance*:
Motional Resistance (R
):
Motional Capacitance (C
):
Quality Factor (Q):
10kHz to 600kHz
A, B or C (see table)
Figure 1
Max.: 10 ~ 169.9kHz, 2x typ.
170~600kHz, 2.5x typ.
Figure 2
Figure 3
Min. is 0.25x typ.
2.0pF max.
10~24.98kHz 1.5
µ
W max.
25~600kHz 1.0
µ
W max.
Figure 4
-0.035ppm/°C
±5ppm max.
1000g 1ms, �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
D
(TOP)
A
E
D
B
C
E
Outline
CX-1-SM Package Dimensions
Dimension
Typical
(mm)
Maximum
(mm)
Shunt Capacitance (C
):
Drive Level:
Turning Point (T
)**:
Temperature Coefficient:
Ageing, first year:
Shock, survival***:
Vibration, survival***:
Operating Temperature:
Storage Temperature:
Process Temperature:
A
B
C
D
E
Dimension
“C”
8.00
3.56
-
1.14
1.52
Glass Lid
(mm max.)
8.38
3.94
see below
1.40
1.78
Ceramic Lid
(mm max.)
Specifications are typical at 25°C unless otherwise indicated.
*
**
***
Tighter frequency calibration available
Other turning point available
Higher shock and vibration version available
SM1
SM2
SM3
1.65
1.70
1.78
1.78
1.83
1.90
CX-1V-SM Crystal Calibration Tolerance at 25°C
Calibration
Frequency Range (kHz)
10~74.9
75~169.9
170~249.9
250~600
A
Equivalent Circuit
L
1
R
1
±0.003%
±0.01%
±0.1%
±0.005%
±0.01%
±0.1%
±0.01%
±0.02%
±0.2%
±0.02%
±0.05%
±0.5%
B
C
1
C
1
C
0
2
Solder Pad Layout
1.78
4.06
6.86
L
1
Motional Inductance
C
1
Motional Capacitance C
0
Shunt Capacitance
R
1
Motional Resistance
EUROQUARTZ [ EUROQUARTZ LIMITED ]
