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CX MINIATURE CRYSTALS
10kHz to 600kHz MINIATURE SMD CRYSTAL FOR SERIES OSCILLATORS
EUROQUARTZ
Telephone: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: sales@euroquartz.co.uk Web: www.euroquartz.co.uk
CX-1H-SM
Page 1 of 2
General Description
The miniature CX-1H-SM quartz crystal is a high quality tuningfork resonator for use in series (two cascaded inverters) oscillators. The CX-1H-SM is hermetically sealed in a rugged, leadless ceramic package. The crystal has been designed for surfacemounting 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 1.5W max. 25~600kHz 3.0W max. Figure 4 -0.035ppm/C 5ppm max. 1000g 1ms, 1/2 sine 20g rms, 10-2,000Hz random -10~+70C (commercial) -40~+85C (industrial) -55~+125C (military) -55C~+125C 260C 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 25C 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-1H-SM Crystal Calibration Tolerance at 25C
Calibration
Frequency Range (kHz) 10~74.9 75~169.9 170~249.9 250~600
A Equivalent Circuit
L1 R1
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
C1 C0
2
Solder Pad Layout
1.78 4.06 6.86
L 1 Motional Inductance C 1 Motional Capacitance C0 Shunt Capacitance
R 1 Motional Resistance
CX MINIATURE CRYSTALS
10kHz to 600kHz MINIATURE SMD CRYSTAL FOR SERIES OSCILLATORS
EUROQUARTZ
Telephone: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: sales@euroquartz.co.uk Web: www.euroquartz.co.uk
CX-1H-SM
Page 2 of 2
Figure 2 - CX-1H Typical Motional Capacitance (C)
5
Circuit Design
Conventional Series Oscillator Circuit
C1 (fF)
2 1.0
0.5 10 50 100 200 600 Frequency (kHz)
Figure 3 - CX-1H Typical Quality Factor (Q)
Oscillator Buffer
50
20
CX-1H Crystal
10
in '000s
Figure 1 - CX-1H Typical Motional Resistance (R)
1000 500
5
2 10 50 1 00 200 600
Frequency (kH z)
200 R1 (k 100
9)
50
Figure 4 - CX-1H Typical Turning Point Temp. (C)
+80 +70 +60
20 10
+50 +40 To(C) +30 10 50 100 200 600 +20 + 10 0 - 10 -20 18 50 100 200 600
Frequency (kHz)
Frequency (kHz)
Terminations Packaging
CX-1H-SM - Bulk Pack (Standard) - 16mm tape, 178mm or 330mm reels (Optional) per EIA 481 - Tray Pack (Optional)
Designation Termination
SM1 SM2 SM3
Gold Plated Nickel, Solder Plated Nickel, Solder Plated and Solder Dipped
Order Code
CX-1H
C = Ceramic Lid Blank = Glass Lid Frequency
-SM1 32.768kHz
SM1 SM2 SM3
(A
/
I
)
"S" if special or custom design Blank if standard
Calibration Tolerance* @ 25C A, B, C *For other calibration tolerances enter figure in ppm
Temperature Range: C = Commercial I = Industrial M = Military S = Specify

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