Data Sheet

EURO QUARTZ
CX1SM AT CRYSTAL
Miniature SMD AT-Cut Quartz Crystal
8MHz to 250MHz
FEATURES
Designed for infrared, vapour phase or epoxy mounting
Low profile, hermetically sealed ceramic package
Excellent ageing characteristics
High shock and vibration resistance
Full military testing available
Available with glass or ceramic lid
Custom designs available
OUTLINE & DIMENSIONS
DESCRIPTION
CX1SM AT crystals are leadless devices designed for surface
mounting.the crystals are hermetically sealed in a rugged, ceramic
package. Due to its robust design this crystal has gained wide
acceptance in the industry.
APPLICATIONS
Medical
Infusion pumps
Monitoring equipment
Industrial, Computer and Instrumentation
Instrumentation
Process control
Environmental control
Telemetry
Military & Aerospace
Communications
Satellite Command and Control
Cockpit electronics
Smart munitions
Timing devices (fuses)
DIMENSION 'H'
Terminations
SM1
SM2/SM4
SM3/SM5
Glass Lid
1.65
1.70
1.78
Ceramic Lid
1.78
1.83
1.90
TERMINATIONS - PLATING
Designation
SM1
SM2
SM3
SM4
SM5
Termination
Gold Plated (Lead Free)
Solder Plated
Solder Dipped
Solder Plated (Lead Free)
Solder Dipped (Lead Free)
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk
EURO QUARTZ
CX1SM AT CRYSTAL
Miniature SMD AT-Cut Quartz Crystal
SPECIFICATION
8MHz to 250MHz
CRYSTAL EQUIVALENT CIRCUIT
Specifications stated are typical at 25°C unless otherwise indicated.
Specifications may change without notice.
Fundamental Frequency:
Motional Resistance R (Ω):
Motional Capacitance C1 (fF):
10.0MHz
30
5.5
32.0MHz
25
6.2
155.52MHz
15
4.0
100
2.2
30
2.3
30
2.3
QualityFactor Q (k):
Shunt Capacitance C0 (pF):
Calibration Tolerance1:
Load Capacitance2:
R1 Motional Resistance
C1 Motional Capacitance
±100ppm or tighter as required
20pF for fr. <50MHz
10pF for fr. >50MHz
500µW max. for fr. <50MHz
200µW max. for fr. <50MHz
Drive Level:
Temperature Stability
Commercial -10 ~ +60°C:
Industrial -40 to +85°C:
Military -55 to +125°C:
Ageing, first year4:
Shock, survival5:
Vibration, survival6:
Operating Temperature Range
Commercial:
Industrial:
Military:
Storage Temperature Range:
Maximum Process Temperature:
3
±50ppm to ±10ppm
±100ppm to ±20ppm
±100ppm to ±30ppm
5ppm max. (±1ppm available)
3,000g, 0.3ms, ½ sine
20g, 10~2000Hz swept sine
L1 Motional Inductance
C0 Shunt Capacitance
PACKAGING OPTIONS
CX1SM crystals are available either tray packed (<250pcs) or tape
and reel (>250 pieces).
16mm tape, 178mm or 330mm reels (EIA 418).
-10° to +70°C
-40° to +85°C
-55 to +125°C
-55° to +125°C
+260°C for 20 seconds
1. Other tolerances available, contact Euroquartz sales.
2. Unless specified otherwise.
3. Does not include calibration tolerance. The characteristicsof the
frequency stability over temperature follow that of the AT thicknessshear mode.
4. 5ppm max. for frequencies below 40MHz For tighter tolerances
and higher frequencies contact Euroquartz sales.
5. Higher shock version available. See CX1HGSM
6. Per MIL-STD-202G, Method 204D, Condition D. Random vibration
testing also available.
HOW TO ORDER CX1SM AT CRYSTALS
CX1 - S
-
'S' if special,
custom design.
Otherwise leave
blank
C
Blank = glass lid
C = ceramic lid
-
SM1
-
Terminations
SM1 = Gold plated *
SM2 = Solder plated
SM3 = Solder dipped
SM4 = Solder plated *
SM5 = Solder dipped *
* = Lead free
32.0M
100
Frequency
M = MHz
Calibration
Tolerance
@25°C
(in ppm)
/ 100
Frequency
Stability
over Temp.
Range
(in ppm)
/
I
Temp. Range
C = -10° ~ +70°C
I = -40° ~ +85°C
M = -55° ~ +125°C
S = Customer specified
May be specified as – / – / 200 / I
where '200' indicates an overall total frequency tolerance in ppm.
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk
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