FUJITSU SEMICONDUCTOR
DATA SHEET
DS07-10202-1E
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.
s
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
s
PACKAGE
FAR Family (C4 series L type)
s
STANDARD CHARACTERISTICS
Series
Parameter
Material
Frequency
Standard frequency
Initial frequency deviation
Temperature characteristic
(–30°C to +85°C)
Capacity of built-in capacitor
Aging stability
Operating temperature
Storage temperature
C4 Series
Lithium Niobate (LiNbO
3
)
24 to 40 MHz
See “s Standard Frequency”
Within
±0.5%
(M)
Within 0.5%
The
±0.3%
(K) version can also be
produced.
Reference temperature: +25°C
10±4 pF are also available.
Capacity is specified by Fujitsu,
considering matching data with applied
IC (mainly microcomputer)
Remarks
20±8 pF (standard)
Within
±0.1%
–30°C to +85°C
–40°C to +100°C
• Resonant frequency
1 MΩ
24 MHz to 40 MHz
IC: MC74HCU04N
×
2
• V
CC
= 5 V DC
• R: Resonator
• C
1
, C
2
: Loading capacitators (built-in)
R
C
1
C
2
Standard measuring circuit
• Serial resonant resistance
R
75Ω
C
1
C
2
75Ω
LM
Measuring instrument: Network analyzer
OSC
2
FAR Family (C4 series L type)
s
STANDARD FREQUENCY
Standard frequency (kHz)
24,000 kHz
33,869 kHz
40,000 kHz
Package size
L
Resonant resistance
75
Ω
max.
(Symbol: 2)
Note: Fujitsu can also develop applicable device in addition to standard devices if it’s oscillation frequency is from
24 to 60 MHz.
s
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.
3
FAR Family (C4 series L type)
s
PART NUMBERING SYSTEM
FAR — C 4 C L —
(1) (2) (3)
—
(4)
—
(5) (6) (7) (8) (9)
(1) Series
Series
C4
(2) Package Type
Specification
C
(3) Package Type
Specification
L
(4) Frequency
See “s Standard Frequency.”
(Example)
Unit: kHz (Specify in five digits.)
24.0 MHz
→
24000
(5) Initial Frequency Deviation
Specification
K
M
(6) Built-in Capacitor
Specification
0
1
(7) Resonant Resistance
Specification
2
Resonant resistance
75Ω max.
Capacitance
20±8 pF
10±4 pF
Deviation
±0.3%
±0.5%
Size
5.0
×
4.0
×
1.6
Type
CHIP
Single crystal
LiNbO
3
Capacitator
With built-in capacitator
4
FAR Family (C4 series L type)
(8) User-specific Special Symbols
Specification
Name
—
A to Z
(9) Resonant Resistance
Specification
R
Description
12 mm wide tape and reel
Description
No specifications, no taping specification
No specifications, with taping specification
Serial number for custom design
5
京公网安备 11010802033920号
EEWORLD
