DS07-10202-1E
FUJITSU SEMICONDUCTOR
DATA SHEET
High-Frequency Resonator
Piezoelectric Resonator
(24 to 40 MHz)
FAR Family (C4 Series L Type)
s
DESCRIPTION
The C4 series (L Type) resonators apply to the frequency range 24 to 60 MHz.
They are fabricated on a lithium niobate (LiNaO
3
) substrate, producing resonators with ultra compact and superior
stability due to the high electromechanical coupling coefficient of the material.
They use the third overtone resonance, so that they can oscilate at high frequency.
They include two loading capacitors inside and their package are chip type for surface mount. It contributes
saving space and reducing mount cost.
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FEATURES
High frequency (24 to 60 MHz)
Surface mount package (SMT)
Suitable for the source of microcomputer clock
Emboss-typed pack for automatic mounting
Superior shock and vibration resistance, preventing damage during automatic mounting
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PACKAGE
2
FAR Family (C4 series L type)
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STANDARD CHARACTERISTICS
C4 Series
Remarks
Material
Lithium Niobate (LiNbO
3
)
Frequency
24 to 40 MHz
Standard frequency
See "
s
Standard Frequency"
Initial frequency deviation
Within
0.5% (M)
The
0.3% (K) version can also be
produced.
Temperature characteristic
(30
C to +85
C)
Within 0.5%
Reference temperature: +25
C
Capacity of built-in capacitor
20
8 pF (standard)
10
4 pF are also available.
Capacity is specified by Fujitsu,
considering matching data with applied
IC (mainly microcomputer)
Aging stability
Within
0.1%
Operating temperature
30
C to +85
C
Storage temperature
40
C to +100
C
Standard measuring circuit
Resonant frequency
Serial resonant resistance
1 M
R
C
1
C
2
24 MHz to 40 MHz
IC: MC74HCU04N
2
V
CC
= 5 V DC
R: Resonator
C
1
, C
2
: Loading capacitators (built-in)
C
1
C
2
LM
R
75
75
OSC
Measuring instrument: Network analyzer
Series
Parameter
3
FAR Family (C4 series L type)
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STANDARD FREQUENCY
Note: Fujitsu can also develop applicable device in addition to standard devices if it's oscillation frequency is from
24 to 60 MHz.
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NOTES ON USE
Handle carefully
Solder under the following conditions.
5 seconds max. at 230
C (PCB)
Recommended preheating is 150
C for one minute in order not to apply extreme heat to the resonator.
Avoid extreme fluctuations in temperature.
There is no specific direction in resonator mounting.
Oscillation data should be examined when used in oscillation circuit with micon or other ICs.
This is for reflow solder, not for flow solder.
Standard frequency (kHz)
Package size
Resonant resistance
24,000 kHz
33,869 kHz
40,000 kHz
L
75
max.
(Symbol: 2)
4
FAR Family (C4 series L type)
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PART NUMBERING SYSTEM
(1) Series
(2) Package Type
(3) Package Type
(4) Frequency
See "
s
Standard Frequency."
(Example)
Unit: kHz (Specify in five digits.)
24.0 MHz
24000
(5) Initial Frequency Deviation
(6) Built-in Capacitor
(7) Resonant Resistance
Series
Single crystal
Capacitator
C4
LiNbO
3
With built-in capacitator
Specification
Type
C
CHIP
Specification
Size
L
5.0
4.0
1.6
Specification
Deviation
K
0.3%
M
0.5%
Specification
Capacitance
0
20
8 pF
1
10
4 pF
Specification
Resonant resistance
2
75
max.
FAR
C
(1) (2)
--
--
--
--
C
4
(3)
(4)
L
(5) (6) (7) (8) (9)
5
FAR Family (C4 series L type)
(8) User-specific Special Symbols
(9) Resonant Resistance
Specification
Description
Name
No specifications, no taping specification
--
No specifications, with taping specification
A to Z
Serial number for custom design
Specification
Description
R
12 mm wide tape and reel
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