EURO
QUARTZ
Low Profile Miniature SMD Crystal
FEATURES
Designed for surface mount applications, including
infrared, vapour phase or epoxy mount techniques
Hermetically sealed ceramic package
Excellent ageing characteristics
Available with glass or ceramic lid
High shock and vibration resistance
Custom designs available
Full Military testing available
CX3SM AT CRYSTAL
9.6MHz to 250MHz
DESCRIPTION
CX3SM AT crystals in leadless ceramic packages are designed for
surface mounting on PCB or hybrid substrates. The small footprint,
low profile crystal is ideal for a wide range of commercial, industrial,
medical and defence/aerospace applications.
OUTLINE & DIMENSIONS
SPECIFICATION
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):
Quality Factor Q (k):
Shunt Capacitance C0 (pF):
Calibration Tolerance
1
:
Load Capacitance
2
:
Drive Level:
Temperature Stability
3
Commercial -10 ~ +60°C:
Industrial -40 to +85°C:
Military -55 to +125°C:
Ageing, first year
4
:
Shock, survival
5
:
Vibration, survival
6
:
Operating Temperature Range
Commercial:
Industrial:
Military:
Storage Temperature Range:
Maximum Process Temperature:
10.0MHz
60
2.8
95
1.4
32.0MHz
25
6.2
30
2.3
155.52MHz
10
4.0
30
2.3
±100ppm or tighter as required
20pF for fr. <50MHz
10pF for fr. >50MHz
500µW max. for fr. <50MHz
200µW max. for fr. <50MHz
±50ppm to ±10ppm
±100ppm to ±20ppm
±100ppm to ±30ppm
5ppm max.
Better than ±1ppm is available
3,000g, 0.3ms, ½ sine
20g, 10~2000Hz swept sine
-10° to +70°C
-40° to +85°C
-55 to +125°C
-55° to +125°C
+260°C for 20 seconds
Dim. H
SM1
SM2
SM3
SM4
SM5
Glass
Lid
1.35
1.40
1.47
1.40
1.47
Ceramic
Lid
1.70
1.75
1.83
1.75
1.83
PACKAGING OPTIONS
CX3SM AT crystals are available either tray packed (<250pcs) or tape
and reel (>250 pieces).
16mm tape, 178mm or 330mm reels (EIA 418).
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.
CRYSTAL EQUIVALENT CIRCUIT
R1 Motional Resistance
C1 Motional Capacitance
L1 Motional Inductance
C0 Shunt Capacitance
HOW TO ORDER CX3SM AT CRYSTALS
CX3 -
S
-
C
Blank = glass lid
C = ceramic lid
-
SM1
-
32.0M
Frequency
M = MHz
, 100 / 100 / - /
Calibration
Tolerance
@25°C
(in ppm)
Frequency
Stability over
Temp. Range
(in ppm)
I
'S' if special,
custom design.
Otherwise leave
blank
Terminations
SM1 = Gold plated *
SM2 = Solder plated
SM3 = Solder dipped
SM4 = Solder plated *
SM5 = Solder dipped *
* = Lead free
Temp. Range
C = -10° ~ +70°C
I = -40° ~ +85°C
M = -55° ~ +125°C
S = Customer specified
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
PCB Design
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