CX-2H-SM Datasheet, PDF (1/2 Pages) EUROQUARTZ limited – CX MINIATURE CRYSTALS

CX MINIATURE CRYSTALS
CX-2H-SM
16kHz to 600kHz
MINIATURE SMD CRYSTAL
FOR SERIES OSCILLATORS
Page
1 of 2
EURO QUARTZ
Telephone: [phone]
Fax: [phone]
Email: [e-mail]
Web: www.euroquartz.co.uk
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
(TOP) _A
I
2
G
H
3F
D
B
C
E
Terminal 1 is electrically connected to terminal 3
Outline
CX-2-SM Package Dimensions
Dimension
Typical
(mm)
Maximum
(mm)
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
Dimension Glass Lid Ceramic Lid
“C”
(mm max.) (mm max.)
SM1
SM2
SM3
1.65
1.70
1.78
1.91
1.96
2.03
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 1.5µW max.
25~600kHz 3.0µW max.
Figure 4
-0.035ppm/°C
±5ppm max.
1,500g 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.
*
Tighter frequency calibration available
**
Other turning point available
*** Higher shock and vibration version available
CX-1H-SM Crystal Calibration Tolerance at 25°C
Calibration
16~74.9
Frequency Range (kHz)
75~169.9 170~249.9
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%
1
L₁
C₁
R₁
2
C₀
R₁ Motional Resistance L₁ Motional Inductance
C₁ Motional Capacitance C₀ Shunt Capacitance
Solder Pad Layout
2.67
2.87 1 2
0.6