FUJITSU SEMICONDUCTOR
DATA SHEET
DS07-20101-7E
Resonator
Piezoelectric Resonator
FAR Family (C1, C3, C4 series)
s DESCRIPTION
Fujitsu resonators (C1, C3, C4 series) feature originally developed single crystals with a high electromechanical
coupling coefficient (LiTaO3: lithium tantalate, LiNbO3: lithium niobate), the result is compact packaging. Three
series are available: the C3 and C4 series with built-in capacitors for high integration, for exclusive use in
microcomputer clocks; and the C1 series for high precision. All series include the CHIP type device for surfacemount and the SIP type device for general PC boards.
s FEATURES
•
•
•
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Surface-mount technology can be applied to the CHIP type to increase packaging density. The SIP type is
only half the height of conventional quartz crystal resonators, and can be easily mounted on general PC boards.
The C3 and C4 series have been developed for exclusive use in microcomputer clocks. They have built-in
capacitors, and the number of components has been reduced to one-third of that of conventional circuits.
Both the SIP and CHIP types can be shipped in taped packages for automatic mounting.
The resonators have superior shock and vibration resistance, preventing damage during automatic insertion
process.
s PACKAGE
FAR Family (C1, C3, C4 series)
s STANDARD FREQUENCY
Standard
frequency (kHz)
C1/C3 series
C4 series
Resonant
resistance
Package
size
Resonant
resistance
3,580
4,000
4,194
4,915
A
A
A
A
300 Ω max.
(00)
A
A
A
A
150 Ω max.
(01)
6,000
6,144
7,373
8,000
10,000
11,000
11,059
12,000
14,746
16.000
•
Package
size
B
B
B
B
B
B
B
B
B
B
150 Ω max.
(01)
B
B
B
B
B
B
B
B
B
B
75 Ω max.
(02)
Package sizes and resonant resistance
There are two package sizes according to frequency:
Frequency
Package size
3 to 5.99 MHz
A
6 to 16 MHz
B
For resonant resistance, standard values are specified according to frequency:
Frequency
Standard resonant resistance
C1/C3 series
C4 series
3 to 3.57 MHz
—
300 Ω max.
(00)
3.58 to 5.99 MHz
300 Ω max.
(00)
150 Ω max.
(01)
6 to 16 MHz
150 Ω max.
(01)
75 Ω max.
(02)
Note: For resonant resistance other than the standard values, they are specified by Fujitsu considering matching data with
applied IC (mainly micro computer).
s NOTES ON USE
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Handle carefully.
Solder under the following conditions.
CHIP type: 5 seconds max. at 230°C (PCB)
SIP type: 10 seconds max. at 260°C
Do not apply extreme heat to the resonator. Recommended preheating for the CHIP type is 150°C for one
minute.
Avoid extreme fluctuations in temperature during use.
There is no specific direction in resonator mounting.
Additional information is available separately, if required, for designing microcomputer oscillation circuits.
CHIP type is for reflow solder, not for flow solder.
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