CX-2V CRYSTAL
16 kHz to 600 kHz
TM
Miniature Quartz Crystal for Pierce Oscillators
DESCRIPTION
The CX-2V quartz crystal is a high quality tuning fork
resonator for use in Pierce (single inverter) oscillators. The
CX-2V is hermetically sealed in a rugged, miniature ceramic
package, one-fourth the size of an eight-pin mini-DIP. The
CX-2V crystal is manufactured using the STATEK-developed
photolithographic process, and was designed utilizing the
experience acquired by producing millions of crystals for
industrial, commercial, military and medical applications.
FEATURES
actual size
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
Ideal for battery operated applications
Designed and manufactured in the USA
PACKAGE HANDLING
PACKAGE DIMENSIONS
-02 End Lead
.094
(2.39)
-03 Side Lead
.260
(6.60)
.094
(2.39)
The CX crystal is hermetically sealed in a ceramic package.
Normal handling and soldering precautions for small, low
thermal mass parts are adequate when installing or testing CX
crystals. CX crystals may be wave soldered, with proper
precaution taken to avoid desoldering the leads. A slow
machine rate or too high a pre-heat temperature or solder bath
temperature can damage the crystals.
Lead to package
solder interface temperature should not exceed 175
o
C,
glass lid to package seal rim temperature should not
exceed 210
o
C.
If the seal rim reaches temperatures above the
maximum specified, the package may lose its hermeticity. Loss
of hermeticity results in a frequency decrease and motional
resistance increase.
EQUIVALENT CIRCUIT
1
2
1
2
3
.260
(6.60)
.210
(5.33)
3
.205
(5.21)
.200
(5.08)
A
A
.050(1.27)
-04 Side Lead
INCHES (mm)
.094
(2.39)
Notes:
1.Terminal 1 is electrically connected
internally to terminal 3.
2.Lead dimensions
Width: .013” (.33mm) Typical
Thickness: .007” (.18mm) Typical
3.A = Glass Lid .080 (2.03) max.
Ceramic Lid .095 (2.41) max.
.260
(6.60)
3
1
2
C
0
1
L
1
C
1
R
1
2
.210
(5.33)
.100
(2.54)
A
10138 - Rev A
R
1
Motional Resistance L
1
Motional Inductance
C
1
Motional Capacitance C
0
Shunt Capacitance
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
SPECIFICATIONS
FIGURE 1
CX-2V TYPICAL MOTIONAL RESISTANCE (R
1
)
Specifications are typical at 25
O
C unless otherwise noted.
Specifications are subject to change without notice.
Frequency Range
16 kHz to 600 kHz
Functional Mode
Tuning Fork (Flexure)
Calibration Tolerance*
A, B or C
(see below)
See Figure 1
Motional Resistance (R
1
)
MAX.: 16-24.9 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
)
2.0 pF MAX.
Drive Level
16-24.9 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***
1,000g peak, 1msec., 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 See package handling
* Tighter frequency calibration available.
** Other turning point available.
*** Higher shock and vibration available.
300
200
100
50
R
1
(k )
20
10
5
2
16
50
100
200
600
Frequency (kHz)
FIGURE 2
CX-2V TYPICAL MOTIONAL CAPACITANCE (C
1
)
5
C
1
(fF)
2
1.0
0.5
16
50
100
200
600
Frequency (kHz)
FIGURE 3
CX-2V TYPICAL QUALITY FACTOR
(Q)
300
200
(in 1000's)
100
50
CX-2V Crystal Calibration Tolerance at 25
O
C
Frequency Range (kHz)
Calibration 16-74.9
A
B
C
+
_
+
_
+
_
20
75-169.9
+
_
+
_
+
_
170-249.9
+
_
+
_
+
_
250-600
+
_
+
_
16
50
100
200
600
Frequency (kHz)
FIGURE 4
CX-2V TYPICAL TURNING POINT TEMP (T
0
)
.
0.003%
0.01%
0.1%
0.005%
0.01%
0.1%
0.01%
0.02%
0.2%
0.02%
0.05%
0.5%
+
_
Frequency Load
Range
Capacitance
(kHz)
(pF)
16-24.9
25-54.9
55-100.0
10
9
8
Frequency
Range
(kHz)
100.1-179.9
180-600
Load
Capacitance
(pF)
5
4
T
O
( C)
O
Load Capacitance (C
L
), Used to Calibrate CX-2V
(other C
L
available)
+80
+70
+60
+50
+40
+30
+20
+10
0
-10
-20
16
20
50
100
200
600
Frequency (kHz)
Note: Frequency (f) deviation from frequency (fo) @ turning point
2
f-f
O
= k(T-T )
O
f
O
HOW TO ORDER CX-2V LEADED CRYSTALS
CX-2V
“S” if special
or custom
design.
Blank if Std.
*Other calibration fill in ppm.
-03
Leads
02
03
04
32.768 kHz
Frequency
(
Calibration
Tolerance*
@ 25
0
C
(A)
(B)
(C)
A
/
I
)
PACKAGING
Temp. Range:
C = Commercial
I = Industrial
M = Military
S = Specify
CX-2V-Leaded -Tray Pack (Standard)
10138 - Rev A
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256 www.statek.com
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