STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
10146 - Rev C
DESCRIPTION
The CX-3H-SM quartz crystals are leadless devices
designed for surface mounting on printed circuit boards
or hybrid substrates. These miniature crystals are
intended to be used in Series oscillators. They are
hermetically sealed in a rugged, miniature ceramic
package. They are manufactured using the STATEK-
developed photolithographic process, and were
designed utilizing the experience acquired by producing
millions of crystals for industrial, commercial, military and
medical applications. Maximum process temperature
should not exceed 260
O
C.
FEATURES
Miniature tuning fork design
High shock resistance
Designed for low power applications
Compatible with hybrid or PC board packaging
Low aging
Full military testing available
Designed and manufactured in the USA
CX-3H-SM CRYSTAL
18 kHz to 600 kHz
Low Profile Surface Mount
Quartz Crystal for Series Oscillators
A
B
D
D
D
TOP
BOTTOM
C
E
TYP.
MAX.
DIM
INCHES
mm
INCHES
mm
A
.265
6.73
.280
7.11
B
.103
2.62
.114
2.90
C
-
-
see below
D
.050
1.27
.060
1.52
E
.052
1.32
.062
1.57
DIM "C"" GLASS LID
CERAMIC LID
MAX
INCHES
mm
INCHES
mm
SM1
.058
1.47
.069
1.75
SM2
.060
1.52
.071
1.80
SM3
.063
1.60
.074
1.88
PACKAGE DIMENSIONS
SUGGESTED LAND PATTERN
C
0
C
1
R
1
2
1
L
1
EQUIVALENT CIRCUIT
R
1
Motional Resistance L
1
Motional Inductance
C
1
Motional Capacitance C
0
Shunt Capacitance
.070[1.78]
.215[5.46]
.120[3.05]
INCHES[mm]
actual size
side view
CONVENTIONAL SERIES
OSCILLATOR CIRCUIT
BUFFER
CX-3H XTAL
OSCILLATOR
Contact factory for
design guidelines
TM
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
10146 - Rev C
SPECIFICATIONS
Specifications are typical at 25
O
C unless otherwise noted.
Specifications are subject to change without notice.
Frequency Range
18 kHz to 600 kHz
Functional Mode
Tuning Fork (Flexure)
Calibration Tolerance*
A, B or C
(see below)
Motional Resistance (R
1
)
See Figure 1
MAX.: 18-25 kHz, 2x Typ.
25-600 kHz, 2.5x Typ.
Motional Capacitance (C
1
)
Figure 2
Quality Factor (Q)
Figure 3
Min. is 0.25x Typ.
Shunt Capacitance (C
0
)
1.8 pF MAX.
Drive Level
18-24.9 kHz 0.5 W MAX.
25-600 kHz 1.0 W MAX.
Turning Point (To)**
Figure 4
Temperature Coefficient (k) -0.035 ppm/
0
C
2
Aging, first year
5ppm MAX.
Shock***
1,500g peak, 0.3 msec., 1/2 sine
Vibration, survival***
10g rms, 20-2,000 Hz random
Operating Temperature
-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
Max Process Temperature
260
O
C for 20 sec.
* Tighter frequency calibration available.
** Other turning point available.
*** Higher shock and vibration available.
CX-3H Crystal Calibration Tolerance at 25
O
C
Frequency Range (kHz)
Calibration 18-74.9
75-169.9
170-249.9
250-600
A
0.003%
0.005%
0.01%
0.02%
B
0.01%
0.01%
0.02%
0.05%
C
0.1%
0.1%
0.2%
0.5%
*** Other calibration values available, consult factory.
+
_
+
_
+
_
+
_
+
_
+
_
+
_
+
_
+
_
+
_
+
_
+
_
HOW TO ORDER CX-3H-SM CRYSTALS
CX-3H
-SM1
32.768 kHz
( A /
I
)
"S" if special
SM1 Frequency
Calibration
Temp. Range:
or custom
SM2
Tolerance*
C = Commercial
design.
SM3
@ 25
0
C
I = Industrial
Blank if Std.
(A)
M = Military
(B)
S = Specify
(C)
*Other calibration fill in ppm.
Blank = Glass Lid
C=Ceramic Lid
TERMINATIONS
Designation
Termination
SM1
Gold Plated
SM2
Nickel, Solder Plated
SM3
Nickel, Solder Plated and Solder Dipped
PACKAGING
CX-3H-SM - Tray Pack (Standard)
-16mm tape, 7" or 13" reels (Optional)
Per EIA 481 (see data sheet 10109)
1000
500
200
100
50
20
10
R
(k
)
1
18 50 100 200 600
Frequency (kHz)
18 50 100 200 600
Frequency (kHz)
50
20
10
5
2
(in 1000's)
18 50 100 200 600
Frequency (kHz)
+80
+70
+60
+50
+40
+30
+20
+10
0
-10
-20
T (
C
)
O
O
FIGURE 1
CX-3H TYPICAL MOTIONAL RESISTANCE (R
1
)
FIGURE 2
CX-
3H
TYPICAL MOTIONAL CAPACITANCE (C
1
)
FIGURE 3
CX-
3H
TYPICAL QUALITY FACTOR (Q)
FIGURE 4
CX-
3H
TYPICAL TURNING POINT TEMP. (T
0
)
5
2
1.0
0.5
18 50 100 200 600
Frequency (kHz)
C
(fF)
1
Note: Frequency (f) deviation from frequency (fo) @ turning point
= k(T-T )
O
2
f-f
f
O
O
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