CARDINAL COMPONENTS
Low Profile Ceramic Surface Mount Crystals
Cardinal “AT-Strip” ceramic surface mount crystals are among the most readily
available on the market today. Many popular frequencies are kept in stock at
our facility.
Series CX21
Part Numbering Example: CX21 Z - A1 B2 C2 200 - 3.579545 D18 - 3
CX21
Z
A1*
B2
C2
200
3.579545
D18
-3
SERIES ADDED FEATURES OPERATING TEMP. STABILITY TOLERANCE RESISTANCE FREQUENCY LOAD CAP.
OVERTONE
CX21 BLANK = BULK PACK A0 = -10°C ~ +60°C B1 = ±100 C1 = ±100 SEE CHART
D16,18,20,ETC. BLANK: FUND.
-3: 3rd OT
BELOW
DS = SERIES
Z = TAPE AND REEL A1 = -10°C ~ +70°C B2 = ± 50 C2 = ± 50
-5: 5th OT
A2 = -40°C ~ +85°C B3 = ± 30 C3 = ± 30
-7: 7th OT
A3 = -55°C ~ +125°C B4 = ± 10 C4 = ± 10
-BT: BT Cut
*NOTE:
The above ABC combinations cover basic specification options. We tailor our crystal specifications
to meet customer requirements. Please contact our sales department if you don’t see exactly what you need.
Specifications:
Frequency Range:
3.579545 ~ 20.000 MHz
20.000000 ~ 60.000 MHz
Operating Temperature:
Frequency Stability:
-10°C ~ +60°C
±100
± 50
± 30
± 15
±100
± 50
± 30
± 10
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
AT Cut Fundamental
AT Cut 3rd Overtone
CX21
Standard
Standard
Frequency Tolerance:
(at 25°C)
Standard
Load Capacitance:
Resistance:
Standard:
Standard 18 pF
Please specify your required load.
Maximum resistance corresponds to frequency.
See chart below.
Mode: Fundamental or 3rd Overtone
Shunt Capacitance: 7 pF Max
Aging: ± 5 ppm/year
Drive Level: 1.0 mW Max
Tape and Reel (1K per Reel)
Optional Features:
Note:
Not all combinations of the above tolerances, stabilities, and temperature
ranges are available. Consult the factory if your requirement is not standard.
Resistance Chart:
All resistances are maximum
EQUIVALENT SERIES RESISTANCE (ESR), MODE OF OPERATION (MODE)
Frequency MHz
3.5
4.0
4.5
7.0
14.0
20.0
~
~
~
~
~
~
3.999
4.499
6.999
13.999
20.000
60.000
ESR (Ω)
200 Max
150 Max
100 Max
70 Max
50 Max
100 Max
Oscillation Mode
Fundamental
Fundamental
Fundamental
Fundamental
Fundamental
3rd Overtone
Cardinal Components, Inc., 155 Rt. 46 W, Wayne, NJ. 07470 TEL: (973)785-1333 FAX: (973)785-0053
http://www.cardinalxtal.com
E-Mail: cardinal@cardinalxtal.com
26
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