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STATEK |
CX18 AT CRYSTAL
30 MHz to 50 MHz
Ultra-Low Profile Ultra Low Weight
Surface Mount Quartz Crystal
DESCRIPTION
When miniaturization is paramount, Statek’s extremely
small CX18 quartz crystal is the most ideal choice. This
crystal is available in frequencies from 30 MHz to 50
MHz, and has typical overall dimensions of 1.55 mm x
0.95 mm x 0.35 mm. This surface mount crystal is her-
metically sealed within an ultra-miniature ceramic pack-
age to ensure high stability and low aging. The extreme-
ly small size of this crystal makes the CX18 ideally suit-
ed for many high frequency applications.
FEATURES
Ultra-Miniature Package
Ultra-Low profile
Ultra-low weight (1.8 mg)
Hermetically sealed package
Excellent aging characteristics
Full military testing available
Designed and manufactured in the USA
APPLICATIONS
Medical
Medical Telemetry
Cardiac rhythm management
Pacemakers
Defibrillators
Neurostimulators
Military & Aerospace
Missle Telemetry
Ruggedized Communications
Aircraft Electronics
Smart Munitions
Industrial & Communications
Bio-Tracking
Process Control
Portable Instrumentation
glass lid
PACKAGE DIMENSIONS
TYPICAL
DIM
inches
mm
A
0.061
1.55
B
0.037
0.95
C see below
D
0.020
0.51
THICKNESS (DIM C)
Lid Termination
Typical
inches mm
SM1
0.0138 0.35
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
10207 Rev A
http://www.Datasheet4U.com
SPECIFICATIONS
Specifications are typical at 25OC unless otherwise noted. Spe-
cifications are subject to change without notice.
Fundamental Frequency 32.0 MHz
Motional Resistance R1(Ω)
150
Motional Capacitance C1 (fF) 0.9
Quality Factor Q (k)
60
49.0 MHz
50
1.1
54
Shunt Capacitance C0 (pF)
0.6
0.5
Calibration Tolerance1
±50 to ±30ppm, or tighter as required
Load Capacitance
9 pF (unless specified otherwise)
Drive Level
100 µW MAX
Frequency-Temperature
Stability1,2
Aging, first year
Shock, survival
±50 ppm to ±10 ppm (Commercial)
±50 ppm to ±20 ppm (Industrial)
±100 ppm to ±30 ppm (Military)
5 ppm MAX (better than 1 ppm available)
5,000 g, 0.3 ms, 1/2 sine
Vibration, survival3
Operating Temp. Range
Storage Temp. Range
20 g, 10-2,000 Hz swept sine
-10OC to +70OC (Commercial)
-40OC to +85OC (Industrial)
-55OC to +125OC (Military)
-55OC to +125OC
Max Process Temperature 260OC for 20 sec.
1. Other tolerances available. Contact factory.
2. Does not include calibration tolerance. The characteristics of the frequency stability over
temperature follow that of the AT thickness-shear mode.
3. Per MIL-STD-202G, Method 204D, Condition D. Random vibration testing also available.
TERMINATIONS
Designation Termination
SM1
Gold Plated (Lead Free)
EQUIVALENT CIRCUIT
PACKAGING OPTIONS
• Tray Pack
HOW TO ORDER CX18 AT CRYSTALS
CX18
S
SM1
— 50.0M , 50
/ 50
/
—
Blank = Standard
S = Special or
custom
Blank = Glass Lid
C = Ceramic Lid
SM1 = Gold Plated
(Lead Free)
Frequency
M = MHz
Calibration
Tolerance
@ 250C
(in ppm)
Frequency
Stability over
Temp.Range
(in ppm)
— /—
OR
/ 100
/
/I
Temp. Range:
C = -10OC to +70OC
I = -40OC to +85OC
M = -55OC to +125OC
S = Customer Specified
I
Total
Frequency
Tolerance
(in ppm)
Operating Temp. Range:
C = -10OC to +70OC
I = -40OC to +85OC
M = -55OC to +125OC
S = Customer Specified
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
10207 Rev A
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