Datenblatt

CX7SM CRYSTAL
14 MHz to 250 MHz
Ultra-Miniature, Low Profile
AT-Cut Surface Mount Crystal
DESCRIPTION
actual size
X
X
SXX
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 260OC.
side view
Ceramic Lid Shown
PACKAGE DIMENSIONS
FEATURES
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
A
TOP
BOTTOM
Excellent aging characteristics
D
Available with glass or ceramic lid
High shock and vibration resistance
B
Custom designs available
C
Full military testing available
Designed and manufactured in the USA
APPLICATIONS
Industrial, Computer & Communications
General purpose clock oscillator
TYP.
MAX.
DIM
INCHES
mm
INCHES
mm
A
0.157
4.00
0.162
4.11
B
0.072
1.83
0.085
2.16
C
-
-
D
0.035
0.89
DIM “C”
GLASS LID
see below
0.045
1.14
CERAMIC LID
PCMCIA
MAX
INCHES
mm
INCHES
mm
Fax, Modem and LAN
SM1
0.045
1.14
0.050
1.27
Smart card
SM2
0.046
1.17
0.051
1.30
PDA and notebook computers
SM3
0.048
1.22
0.053
1.35
Handheld instrumentation
Cellular
SUGGESTED LAND PATTERN
PCS
GRID COURTYARD
Military & Aerospace
0.177[4.50]
Airborne hybrid computer
0.121[3.07]
Military high speed modem
MCM
INCHES[MM]
0.092
[2.34]
0.067[1.70]
10155 - Rev B
YS
TEM
C ERT I F I C
AT
IO
S
0.055[1.40]
N
IS O
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
90
01
SPECIFICATIONS
TERMINATIONS
Specifications are typical at 25OC unless otherwise noted.
Specifications are subject to change without notice.
49 MHz
Designation
SM1
SM2
SM3
Motional Resistance R1(kΩ)
14
Motional Capacitance C1 (fF)
2.4
Quality Factor Q (k)
100
Shunt Capacitance C0 (pF)
Calibration Tol. Range*
Termination
Gold Plated
Solder Plated
Solder Dipped
0.8
+
_
PACKAGING OPTIONS
100 ppm to +_ 10000 ppm
Load Capacitance
10pF (unless specified by customer)
Drive Level
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
C0
Aging, first year
5 ppm MAX.
Shock, survival***
5,000 G peak 0.3 ms, 1/2 sine
Vibration, survival
20 G RMS, 10-2,000 Hz random
1
L1
Standard Operating Temperature Ranges
-10OC to +70OC (Commercial)
-40OC to +85OC (Industrial)
-55OC to +125OC (Military)
Storage Temperature
C1
R1
2
R1 Motional Resistance L1 Motional Inductance
C1 Motional Capacitance C0 Shunt Capacitance
-55OC to +125OC
Max Process Temperature 260OC 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
C
“S” if special or
custom design.
Blank if Std.
C=Ceramic Lid
Blank=Glass Lid
SM1
49.0M
Frequency
M = MHz
SM1 = Gold Plated
SM2 = Solder Plated
SM3 = Solder Dipped
,
50
Calibration
Tolerance
@ 25OC
(in ppm)
+
/
50
Frequency
Stability over
Temp. Range
(in ppm)
/
I
/
*Total
Frequency
Tolerance
(in ppm)
Temp. Range:
C = -10OC to +70OC
I = -40OC to +85OC
M = -55OC to +125OC
S = Customer Specified
+
Other calibrations available:
indicate your requirement 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.
/
OR
/
100
Total
Frequency
Tolerance
(in ppm)
/
I
Temperature Range:
C = -10OC to +70OC
I = -40OC to +85OC
M = -55OC to +125OC
S = Customer Specified
YS
TEM
C ERT I F I C
AT
IO
S
10155 - Rev B
N
IS O
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
90
01
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