EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk
EURO
QUARTZ
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.
OUTLINE & DIMENSIONS
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
CX1SM AT CRYSTAL
Miniature SMD AT-Cut Quartz Crystal
8MHz to 250MHz
SM1 1.65 1.78
SM2/SM4 1.70 1.83
SM3/SM5 1.78 1.90
Terminations
DIMENSION 'H'
Glass Lid
Ceramic Lid
TERMINATIONS - PLATING
SM1 Gold Plated (Lead Free)
SM2 Solder Plated
SM3 Solder Dipped
SM4 Solder Plated (Lead Free)
SM5 Solder Dipped (Lead Free)
Designation Termination
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)
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk
EURO
QUARTZ
SPECIFICATION
Fundamental Frequency: 10.0MHz 32.0MHz 155.52MHz
Motional Resistance R (Ω): 30 25 15
Motional Capacitance C1 (fF): 5.5 6.2 4.0
QualityFactor Q (k): 100 30 30
Shunt Capacitance C0 (pF): 2.2 2.3 2.3
Calibration Tolerance1: ±100ppm or tighter as required
Load Capacitance2: 20pF for fr. <50MHz
10pF for fr. >50MHz
Drive Level: 500µW max. for fr. <50MHz
200µW max. for fr. <50MHz
Temperature Stability3
Commercial -10 ~ +60°C: ±50ppm to ±10ppm
Industrial -40 to +85°C: ±100ppm to ±20ppm
Military -55 to +125°C: ±100ppm to ±30ppm
Ageing, first year4: 5ppm max. (±1ppm available)
Shock, survival5: 3,000g, 0.3ms, ½ sine
Vibration, survival6: 20g, 10~2000Hz swept sine
Operating Temperature Range
Commercial: -10° to +70°C
Industrial: -40° to +85°C
Military: -55 to +125°C
Storage Temperature Range: -55° to +125°C
Maximum Process Temperature: +260°C for 20 seconds
Specifications stated are typical at 25°C unless otherwise indicated.
Specifications may change without notice.
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 thickness-
shear 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.
CX1SM AT CRYSTAL
Miniature SMD AT-Cut Quartz Crystal
8MHz to 250MHz
PACKAGING OPTIONS
CX1SM crystals are available either tray packed (<250pcs) or tape
and reel (>250 pieces).
16mm tape, 178mm or 330mm reels (EIA 418).
CRYSTAL EQUIVALENT CIRCUIT
R1 Motional Resistance L1 Motional Inductance
C1 Motional Capacitance C0 Shunt Capacitance
HOW TO ORDER CX1SM AT CRYSTALS
CX1 - S - C - SM1 - 32.0M 100 / 100 / I
'S' if special,
custom design.
Otherwise leave
blank
Blank = glass lid
C = ceramic lid
Terminations
SM1 = Gold plated *
SM2 = Solder plated
SM3 = Solder dipped
SM4 = Solder plated *
SM5 = Solder dipped *
* = Lead free
Frequency
M = MHz
Calibration
Tolerance
@25°C
(in ppm)
Temp. Range
C = -10° ~ +70°C
I = -40° ~ +85°C
M = -55° ~ +125°C
S = Customer specified
Frequency
Stability
over Temp.
Range
(in ppm)
May be specified as – / – / 200 / I
where '200' indicates an overall total frequency tolerance in ppm.
