TERMINATIONS
SPECIFICATIONS
o
Specifications are typical at 25 C unless otherwise noted.
Specifications are subject to change without notice.
Designation Termination
SM1
SM2
SM3
Gold Plated
49 MHz
Nickel, Solder Plated
Motional Resistance R1(k
⍀
)
14
2.4
Nickel, Solder Plated and Solder Dipped
Motional Capacitance C1 (fF)
Quality Factor Q (k)
100
0.8
Shunt Capacitance C (pF)
o
PACKAGING
Calibration Tolerance*
A+_ 0.01% (+_ 100ppm)
B +_ 0.1%
CX-7-SM -Tray Pack (Standard)
-16mm tape, 7” or 13” reels (Optional)
Per EIA 481 (see data sheet 10109)
C +_ 1.0%
Load Capacitance
Drive Level
10pF (unless specified by customer)
200 W MAX.
+
Frequency-Temperature
Stability**
-10OC to +70OC from _ 10ppm
+
EQUIVALENT CIRCUIT
-40OC to +85OC from _ 35ppm
+
-55OC to +125OC from _ 50ppm
C0
Aging, first year
5ppm MAX.
1
L1
C1
R1
2
Shock, survival***
Vibration, survival
Operating Temperature
5,000g peak 0.3 msec., 1/ 2 sine
20g rms, 10-2,000 Hz random
-10OC to +70OC Commercial
-40OC to +85OC Industrial
-55OC to +125OC Military
R Motional Resistance L Motional Inductance
C1 Motional Capacitance C0 Shunt Capacitance
1
1
Storage Temperature
-55OC to +125OC
CONVENTIONAL CMOS
PIERCE OSCILLATOR CIRCUIT
Max Process Temperature 260OC for 20 sec.
Rf
Note: The characteristics of the frequency temperature stability
follow that of AT-Cut thickness-shear mode.
BUFFER
OSC
Freq (f )
RA
+
AMPLIFIER
CS
O
_
* Tighter tolerances available as low as 5 ppm
** Does not include calibration tolerance
*** Higher shock version available
Contact factory for
design guidelines
CG
CX-7
CD
CX-1
HOW TO ORDER CX-7-SM CRYSTALS
CX-7
SM1
49 MHz
(
50
/
50
/
100
/
I
)
C=Ceramic Lid
Blank=Glass Lid
SM1
SM2
SM3
Frequency
*Calibration
Tolerance
@25OC
(A)
*Frequency
Stability over Tolerance
Temp. Range
Total Frequency Temp. Range:
“S” if special or
custom design.
C = Commercial
I = Industrial
M = Military
(B)
S = Specify
(C)
*Other calibration fill in ppm.
10155 - Rev A
RSG Electronic Components GmbH - Sprendlinger Landstr. 115 - 63069 Offenbach - Germany - www.rsg-electronic.de
RSG [ RSG ELECTRONIC COMPONENTS GMBH ]
