EUROQUARTZ CX-3HC-SM332.768C Cx miniature crystal Datasheet

CX MINIATURE CRYSTALS
CX-3H-SM
EUROQUARTZ
Telephone:
+44(0)1460 230000
Fax:
+44(0)1460 230001
Email: [email protected]
Web: www.euroquartz.co.uk
Page
18kHz to 600kHz
MINIATURE SMD
CRYSTAL FOR
SERIES OSCILLATORS
1 of 2
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General Description
The CX-3H-SM quartz crystals are leadless devices designed for
surface-mounting on printed circuit boards or hybrid circuits.
These miniature crystals are intended for use with series
oscillators. Hermetically sealed in a rugged, ceramic package, the
crystals are produced utilizing a photo-lithographic process giving
excellent repeatability and consistent high quality.
A
D
D
B
C
Motional Capacitance (C1):
Quality Factor (Q):
E
Outline
Shunt Capacitance (C0):
Drive Level:
CX-3H-SM Package Dimensions
Dimension
Typical
(mm)
Turning Point (T0)**:
Temperature Coefficient:
Ageing, first year:
Shock***:
Vibration, survival:
Operating Temperature:
Maximum
(mm)
A
6.73
B
2.62
2.90
C
-
see below
D
1.27
1.52
E
1.32
1.57
Specification
Frequency Range:
Functional Mode:
Calibration Tolerance*:
Motional Resistance (R1):
D
(TOP)
Miniature tuning fork design
High shock resistance
Designed for low power applications
Compatible with hybrid or PCB mounting
Low ageing
Full military environmental testing available
Ideal for battery operated applications
7.11
Storage Temperature:
Max. Process Temperature:
18kHz to 600kHz
Tuning Fork (Flexure)
A, B, or C (see below)
See Figure 1
Max: 18-25kHz, 2 x typ.
25-600kHz, 2.5 x typ.
See Figure 2
See Figure 3
min. is 0.25 x typ.
1.8pF max.
18-25kHz 0.5µW max.
25-600kHz 1.0µW max.
See Figure 4
-0.035ppm/°C2
±5ppm max.
1,500g peak, 0.3ms, ½ 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.
Dimension
ā€œCā€
Glass Lid
(mm max.)
Ceramic Lid
(mm max.)
SM1
1.47
1.75
SM2
1.52
1.80
SM3
1.60
1.88
*
**
***
CX-3V Crystal Calibration Tolerance at 25°C
Calibration
Equivalent Circuit
1
L1
C1
Closer frequency calibration available
Other turning point available
A higher shock and vibration version is available.
R1
2
Frequency Range (kHz)
18~74.9
75~169.9
L 1 Motional Inductance
C 1 Motional Capacitance C0 Shunt Capacitance
250~600
A
±0.003%
±0.005%
±0.01%
±0.02%
B
±0.01%
±0.01%
±0.02%
±0.05%
C
±0.1%
±0.1%
±0.2%
±0.5%
Terminations
C0
R 1 Motional Resistance
170~249.9
Designation
Termination
SM1
Gold Plated
SM2
Nickel, Silver Plated
SM3
Nickel, Solder Plated and Solder Dipped
CX MINIATURE CRYSTALS
CX-3H-SM
EUROQUARTZ
Telephone:
+44(0)1460 230000
Fax:
+44(0)1460 230001
Email: [email protected]
Web: www.euroquartz.co.uk
Page
18kHz to 600kHz
MINIATURE SMD
CRYSTAL FOR
SERIES OSCILLATORS
2 of 2
Figure 2 - CX-3H Typical Motional Capacitance (C1)
5
Circuit Design
C1
2
(fF)
1.0
Conventional Series Oscillator Circuit
0.5
18
50
100 200
600
Frequency (kHz)
Figure 3 - CX-3H Typical Quality Factor (Q)
Oscillator
Buffer
50
20
CX-1H Crystal
10
in '000s
5
Figure 1 - CX-3H Typical Motional Resistance (R1)
2
1000
18
50
100 200
600
Frequency (kHz)
500
200
R1
(k
Figure 4 - CX-3H Typical Turning Point Temp. (°C)
100
W)
+80
+70
50
+60
+50
+40
20
To(°C) +30
+20
10
18
50
+ 10
600
100 200
0
Frequency (kHz)
- 10
-20
18
50
100 200
600
Frequency (kHz)
Solder Pad Layout
Packaging
1.78
CX-3H-SM- Bulk Pack (Standard)
- 16mm tape, 178mm or 330mm reels (Optional)
per EIA 481
- Tray Pack (Optional)
3.05
5.46
Order Code
CX-3H
C = Ceramic Lid
Blank = Glass Lid
ā€œSā€ if special
or custom design
Blank if standard
Frequency
-SM1 32.768kHz ( A
SM1
SM2
SM3
Calibration
Tolerance*
@ 25°C
A, B, C
*For other calibration
tolerances enter
figure in ppm
/
I
)
Temperature
Range:
C = Commercial
I = Industrial
M = Military
S = Specify
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