CX-4-SM CRYSTAL
15 MHz to 50 MHz
™
Ultra-Miniature, Low Profile
AT
-Cut Surface Mount Quartz Crystal
Fundamental Mode: 15 MHz - 50 MHz
DESCRIPTION
actual size
STATEK’s ultra-miniature low profile CX-4-SM 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
PACKAGE DIMENSIONS
side view
Designed for surface mount applications using
infrared, vapor phase, wave solder or epoxy mount
techniques.
Low profile (less than 1.2mm) hermetically sealed
ceramic 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
APPLICATIONS
D
A
TOP
F
BOTTOM
B
C
D
E
TYP.
DIM
A
B
C
D
E
F
DIM “C”
MAX
SM1
SM2
SM3
INCHES
.197
.072
-
.038
.020
.025
mm
5.00
1.83
-
0.97
0.51
0.64
MAX.
INCHES
.210
.085
mm
5.33
2.16
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
.048
-
-
1.22
-
-
GLASS LID
INCHES
.045
.046
.048
mm
1.14
1.17
1.22
CERAMIC LID
INCHES
.O5O
.051
.053
mm
1.27
1.30
1.35
10150 - Rev C
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
SPECIFICATIONS
TERMINATIONS
Specifications are typical at 25oC unless otherwise noted.
Specifications are subject to change without notice.
16 MHz
60
1.5
100
0.8
A
B
C
+
_
_
0.01% (
+
100ppm)
+
_
0.1%
+
_
1.0%
Motional Resistance R
1
( )
Motional Capacitance C
1
(fF)
Quality Factor Q (k)
Shunt Capacitance Co (pF)
Calibration Tolerance*
Designation
SM1
SM2
SM3
Termination
Gold Plated
Nickel, Solder Plated
Nickel, Solder Plated and Solder Dipped
PACKAGING
CX-4-SM -Tray Pack (Standard)
-16mm tape, 7” or 13” reels (Optional)
Per EIA 481 (see data sheet 10109)
Load Capacitance
Drive Level
Frequency-Temperature
Stability**
Aging, first year
Shock, survival***
Vibration, survival
Operating Temperature
10 pF
(Unless specified by customer)
200 W MAX.
_
-10
O
C to +70
O
C from
+
10ppm
_
-40
O
C to +85
O
C from
+
35ppm
_
-55
O
C to +125
O
C from
+
50ppm
EQUIVALENT CIRCUIT
C
0
1
L
1
C
1
R
1
2
5ppm MAX.
3,000g, 0.3 msec, 1/2 sine
20g rms, 10-2,000 Hz random
-10
O
C to +70
O
C Commercial
-40
O
C to +85
O
C Industrial
-55
O
C to +125
O
C Military
-55
O
C to +125
O
C
260
O
C for 20 sec.
R
1
Motional Resistance L
1
Motional Inductance
C
1
Motional Capacitance C
0
Shunt Capacitance
Storage Temperature
Max Process Temperature
CONVENTIONAL CMOS
PIERCE OSCILLATOR CIRCUIT
Note: The characteristics of the frequency temperature stability follow
that of AT cut thickness-shear mode.
_
* Tighter tolerances available as low as
+
5 ppm
** Does not include calibration tolerance
***Higher shock version available
R
f
BUFFER
OSC
Freq (f
O
)
Contact factory for
design guidelines
SUGGESTED LAND PATTERN
.059[1.5]
AMPLIFIER
C
S
R
A
.092[2.3]
C
G
CX-1
CX-4
C
D
INCHES[mm]
.160[4.0]
HOW TO ORDER CX-4-SM CRYSTALS
CX-4
“S” if special or
custom design.
C=Ceramic Lid
Blank=Glass Lid
SM1
SM1
SM2
SM3
32 MHz
Frequency
(
25ppm
*Calibration
Tolerance
@25
O
C
(A)
(B)
(C)
/
25ppm
/
50ppm
/
I
)
*Frequency
Total Frequency Temp. Range:
Stability over Tolerance
C = Commercial
Temp. Range
I = Industrial
M = Military
S = Specify
*Other calibration and stability fill in ppm.
10150 - Rev C
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
