Ceramic Surface Mount Crystals
• Very low drive level
• Wide frequency range
• Tight stabilities and tolerances
CARDINAL COMPONENTS
Series CX635A
CX635B
Part Numbering Example: CX635A Z - A1 B2 C2 50 - 11.0 D18 - 3
CX635A
Z
A1*
B2
C2
50
11.0
D18
-3
SERIES ADDED FEATURES OPERATING TEMP. STABILITY TOLERANCE RESISTANCE FREQUENCY LOAD CAP.
OVERTONE
CX635A BLANK = BULK PACK A0 = -10°C ~ +60°C B1 = ±100 C1 = ±100 SEE CHART
D16,18,20,ETC. BLANK: FUND.
-3: 3rd OT
BELOW
CX635B Z = TAPE AND REEL A1 = -10°C ~ +70°C B2 = ± 50 C2 = ± 50
DS = SERIES
A2 = -40°C ~ +85°C B3 = ± 30 C3 = ± 30
A3 = -55°C ~ +125°C B4 = ± 10 C4 = ± 10
*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:
Operating Temperature:
8.000 ~ 50.000 MHz
-10°C ~ +70°C
-20°C ~ +70°C
-40°C ~ +85°C
±50
±30
±10
± 5
ppm
ppm
ppm
ppm
CX635A
Standard
YYWWCD
Frequency Stability:
Standard
Frequency Tolerance:
(at 25°C)
Load Capacitance:
Resistance:
Standard:
±50 ppm
±30 ppm
±10 ppm
Standard
Standard 18pF or series.
Other values are available.
Maximum resistance corresponds to frequency.
See chart below.
Mode: Fundamental, 3rd or 5th Overtone
Shunt Capacitance: 7 pF Max
Aging: ± 5 ppm/year
Drive Level: 50 µW
Packaging: Tape and Reel (1K per Reel)
CX635B
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
11.0
14.0
25.0
55.0
100.0
~ 13.99
~ 24.99
~ 54.99
~ 100.00
~ 150.00
ESR (Ω)
50
40
30
70
100
Oscillation Mode
Fundamental
Fundamental
Fundamental
3rd Overtone
5th Overtone
RECOMMENDED SOLDER
PAD LAYOUT
1801 Broadway St
Charlottesville, VA 22902
USA
Cardinal Components, Inc.
TEL:
(973)785-1333
E-MAIL: sales@cardinalxtal.com
WEB: http://www.cardinalxtal.com
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