EURO
QUARTZ
Ultra-Miniature SMD Crystal
FEATURES
Designed for infrared, vapour phase or epoxy mounting
Low profile, (<0.59mm) hermetically sealed ceramic
package
Excellent ageing characteristics
High shock and vibration resistance
Full military testing available
Available with glass or ceramic lid
CX14SM AT CRYSTAL
20MHz to 50MHz
OUTLINE & DIMENSIONS
DESCRIPTION
CX14SM crystals are designed for applications requiring very small
footprint and low profile (<0.59mm). Using micro-machining
processes this hermetically-sealed crystal ensures high stability and
low ageing.
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):
QualityFactor Q (k):
Shunt Capacitance C0 (pF):
Standard Calibration Tolerance
1
:
Load Capacitance
2
:
Drive Level:
Frequency Stability
1,3
-10° to +70°C:
-40° to +85°C:
-55° to +125°C:
Ageing, First Year
4
:
Shock, Survival
5
:
Vibration, Survival
6
:
Operating Temperature Range:
26.0MHz
20
3.5
80
1.0
50.0MHz
25
3.0
40
1.5
±100ppm or tighter as required.
10pF (or
as specified)
100µW maximum
±50ppm to ±10ppm
±100ppm to ±20ppm
±100ppm to ±30ppm
±5ppm maximum
(Better than ±1ppm available)
5000g, 0.3ms, ½ sine
20g rms, 10~2000Hz swept sine
-10°C to +70°C (Commercial)
-40°C to +85°C (Industrial)
-55°C to +125°C (Military)
-55° to +125°C
+260°C for 20 seconds
Dim. H
SM1
SM2
SM3
SM4
SM5
Glass
Lid
0.63
0.65
0.67
0.65
0.67
Ceramic Thin Glass
Lid
Lid
0.59
0.61
0.63
0.61
0.63
0.52
0.54
0.56
0.54
0.56
CRYSTAL EQUIVALENT CIRCUIT
Storage Temperature Range:
Maximum Process Temperature:
1.
2.
3.
4.
5.
6.
Other tolerances available, contact Euroquartz sales
Unless specified otherwise.
Does not include calibration tolerance. (Frequency stability
characteristics follow that of the AT-Cut thickness-shear mode.)
5ppm maximum for frequencies below 40MHz. For tighter
tolerances and higher frequencies contact Euroquartz sales.
A higher shock version available.
Per MIL-STD-202G, Method 204D, Condition D. Random
vibration testing also available.
R1 Motional Resistance
C1 Motional Capacitance
L1 Motional Inductance
C0 Shunt Capacitance
PACKAGING OPTIONS
CX14SM AT crystals are available either tray packed (<250pcs) or
tape and reel (>250 pieces).
12mm tape, 178mm or 330mm reels (EIA 418).
HOW TO ORDER CX14SM AT CRYSTALS
CX14 - S
'S' if special,
custom design.
Otherwise leave
blank
-
C
Blank = glass lid
C = ceramic lid
-
SM1
-
26.0M,
Frequency
M = MHz
100
Calibration
Tolerance
@25°C
(in ppm)*
/ 100 / - /
Frequency
Stability over
Temp. Range
(in ppm)*
I
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
*Alternative 'total' tolerance (in ppm)
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
Programming Basics
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