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!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
Ceramic Filters (CERAFILr)/Ceramic Discriminators for Communications Equipment
CERAFILr kHz SMD Type CFXCE Series
CFXCE series are very small and high-efficiency
surface mount, ladder type 450/455 kHz ceramic filters
"CERAFIL" for IF section.
Compared to our previous compact surface mounted
6-element product, this ceramic filter has been
significantly downsized to approximately one-third
the original volume and reduced to less than 2mm in
height.
As for electrical performance, this product, which
consists of 4 elements, provides stop band attenuation
equivalent to that of our previous 6-element product.
The input/output impedance characteristics are also
equivalent to those of the previous product, and
spurious responses in the vicinity of the passing band
can now be eliminated. This allows mobile
telecommunications equipment manufacturers to easily
design the periphery of the IF section and thus
greatly enhance the interference suppression
capability of the equipment. In addition, this ceramic
filter provides flatter group delay time
characteristics than the previous product, and will
effectively work as a component for data transmission
in digital mobile telecommunications systems.
■ Features
1. Compact, thin, and lightweight
Size: 3.8x3.2x1.25mm
Weight: 40mg
2. Out-of-band attenuation is increased and spurious
responses are greatly decreased.
3. Group delay time characteristics are flattened.
4. Surface mountable, and reflow soldering can be used
for mounting. Available lead (Pb) free solder
reflow
■ Applications
1. IF filters for PDCs
2. IF filters for various types of pagers
3. IF filters for various types of analog and digital
cellular telephones
4. IF filters for radio communication circuits
applicable for PDA or PCMCIA
5. IF filters for other general mobile wireless
equipment
*
3.8
3.2
(2.9)
Input terminal marking
(3.5)
0.3
4-0.9
4-0.35
4-0.35
(1) (2)
(4) (3)
(5)
1.2
4-1.4
1.8
(1)
(2)
(3)(4)(5)
Tolerance unless
otherwise specified : ±0.1
( )
: Input
: Output
: Ground
: Reference
(in mm)
1.2+0.05
-0.10
Part Number Nominal Center
Frequency (fn)
(kHz)
3dB
Bandwidth
(kHz)
6dB
Bandwidth
Stop
Bandwidth
(kHz)
Stop Band
Attenuation
(dB)
Stop Band Att.(2)
(dB) Stop Band Att.(3)
(dB)
Insertion
Loss
(dB)
Ripple
(dB) GDT Deviation
(µs)
CFXCE450KCFA-R1
450 fn±9.0 to
±12.0kHz max. -fn±35.0 max.
[within 50dB] 30 min.
[at fn±25kHz] 55 min.
[within fn±40kHz to ±50kHz] 47 min.
[within fn±100kHz] 6.0 max.
[at fn] 0.5 max.
[within fn±10.5kHz] 27.0 max.
[within fn±10.5kHz]
Spurious:40dB [within 0.1 to 1.0MHz]
Input/Output Impedance: 2000 ohm
For safety purposes, connect the output of filters to the IF amplifier through a D.C. blocking capacitor. Avoid applying a direct current to the output of ceramic filters.
The order quantity shoud be an integral multiple of the "Minimum Quantity" shown in package page in this catalog.
Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this PDF catalog to prevent smoking and/or burning, etc.
This catalog has only typical specifications. Therefore, you are requested to approve our product specifications or to transact the approval sheet for product specifications before ordering.
!Note P05E12.pdf 05.3.15