CX-3H-SM Datasheet, PDF (1/2 Pages) EUROQUARTZ limited – CX MINIATURE CRYSTALS

CX MINIATURE CRYSTALS
CX-3H-SM
18kHz 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 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.
 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
Specification
D
(TOP) _A
D
D
B
C
E
Outline
CX-3H-SM Package Dimensions
Dimension
A
B
C
D
E
Typical
(mm)
6.73
2.62
-
1.27
1.32
Maximum
(mm)
7.11
2.90
see below
1.52
1.57
Dimension Glass Lid Ceramic Lid
“C”
(mm max.) (mm max.)
SM1
SM2
SM3
1.47
1.52
1.60
1.75
1.80
1.88
Equivalent Circuit
1
L₁
C₁
R₁
C₀
Frequency Range:
Functional Mode:
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***:
Vibration, survival:
Operating Temperature:
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/°C
±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.
*
Closer frequency calibration available
**
Other turning point available
*** A higher shock and vibration version is available.
CX-3V Crystal Calibration Tolerance at 25°C
Calibration
18~74.9
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%
2
Terminations
R₁ Motional Resistance L₁ Motional Inductance
C₁ Motional Capacitance C₀ Shunt Capacitance
Designation
SM1
SM2
SM3
Termination
Gold Plated
Nickel, Silver Plated
Nickel, Solder Plated and Solder Dipped