CX7SM CRYSTAL
14 MHz to 250 MHz
Ultra-Miniature, Low Profile
AT
-Cut Surface Mount Crystal
DESCRIPTION
STATEK’s ultra-miniature, low profile CX7SM AT-cut crystals in
leadless ceramic packages are designed for surface mounting
on printed circuit boards or hybrid circuits. These crystals are
low profile and have a very small land pattern. Maximum
process temperature should not exceed 260
O
C.
FEATURES
XXX
SX
Ceramic Lid Shown
PACKAGE DIMENSIONS
actual size
side view
Designed for surface mount applications using infrared,
vapor phase, wave solder or epoxy mount techniques
Low profile (less than 1.2mm) hermeitcally sealed
ceraminc package
Excellent aging characteristics
Available with glass or ceramic lid
High shock and vibration resistance
Custom designs available
Full military testing available
Designed and manufactured in the USA
DIM
A
APPLICATIONS
A
TOP
BOTTOM
D
B
TYP.
INCHES
0.157
0.072
-
0.035
INCHES
0.045
0.046
0.048
GLASS LID
mm
1.14
1.17
1.22
mm
4.00
1.83
-
0.89
0.162
0.085
0.045
INCHES
0.050
0.051
0.053
C
MAX.
INCHES
mm
4.11
2.16
1.14
mm
1.27
1.30
1.35
B
C
D
DIM “C”
MAX
SM1
SM2
SM3
Industrial, Computer & Communications
General purpose clock oscillator
PCMCIA
Fax, Modem and LAN
Smart card
PDA and notebook computers
Handheld instrumentation
Cellular
PCS
Military & Aerospace
Airborne hybrid computer
Military high speed modem
MCM
see below
CERAMIC LID
SUGGESTED LAND PATTERN
GRID COURTYARD
0.177[4.50]
0.121[3.07]
INCHES[MM]
0.092
[2.34]
0.055[1.40]
0.067[1.70]
10155 - Rev B
S
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M
C
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C
A
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STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256
www.statek.com
IS
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01
90
SPECIFICATIONS
TERMINATIONS
Specifications are typical at 25
O
C unless otherwise noted.
Specifications are subject to change without notice.
49 MHz
Motional Resistance R
1
(kΩ)
Motional Capacitance C
1
(fF)
Quality Factor Q (k)
Shunt Capacitance C
0
(pF)
Calibration Tol. Range*
Load Capacitance
Drive Level
+
_
14
2.4
100
0.8
_
100 ppm to
+
10000 ppm
Designation
SM1
SM2
SM3
Termination
Gold Plated
Solder Plated
Solder Dipped
PACKAGING OPTIONS
10pF (unless specified by customer)
200
µW
MAX.
CX7SM
-Tray Pack
-16mm tape, 7” or 13” reels
(Reference tape and reel data sheet 10109)
Frequency Stability Over Temperature**
+
_
10ppm for (Commercial)
+
_
+
_
35ppm for (Industrial)
50ppm for (Military)
EQUIVALENT CIRCUIT
Aging, first year
Shock, survival***
Vibration, survival
5 ppm MAX.
5,000 G peak 0.3 ms, 1/2 sine
20 G RMS, 10-2,000 Hz random
C
0
1
L
1
C
1
R
1
2
Standard Operating Temperature Ranges
-10
O
C to +70
O
C (Commercial)
-40
O
C to +85
O
C (Industrial)
-55
O
C to +125
O
C (Military)
Storage Temperature
-55
O
C to +125
O
C
R
1
Motional Resistance L
1
Motional Inductance
C
1
Motional Capacitance C
0
Shunt Capacitance
Max Process Temperature 260
O
C for 20 sec.
Note: The characteristics of the frequency stability over
temperature follow that of the AT-Cut thickness-shear
mode.
_
* Tighter tolerances available as low as
+
5 ppm
** Does not include calibration tolerance
*** Higher shock version available
HOW TO ORDER CX7SM CRYSTALS
CX7
“S” if special or
custom design.
Blank if Std.
C
C=Ceramic Lid
Blank=Glass Lid
SM1
49.0M
Frequency
M = MHz
SM1 = Gold Plated
SM2 = Solder Plated
SM3 = Solder Dipped
,
+
50
Calibration
Tolerance
@ 25
O
C
(in ppm)
/
50
Frequency
Stability over
Temp. Range
(in ppm)
/
/
I
Temp. Range:
C = -10
O
C to +70
O
C
I = -40
O
C to +85
O
C
M = -55
O
C to +125
O
C
S = Customer Specified
*
Total
Frequency
Tolerance
(in ppm)
Other calibrations available:
indicate your requirement in ppm
*
+
OR
/
100
Total
Frequency
Tolerance
(in ppm)
*
If specifying Total Frequency Tolerance, dashes must be used in the part number for the
Calibration Tolerance and Frequency Stability over Temp Range. These are our standard
parameters, if requiring additional parameters please specify.
/
/
I
Temperature Range:
C = -10
O
C to +70
O
C
I
= -40
O
C to +85
O
C
M = -55
O
C to +125
O
C
S = Customer Specified
10155 - Rev B
S
YS
TE
M
C
ERT
I
F
I
C
A
T
IO
N
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256
www.statek.com
IS
O
01
90
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