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FILTERS FOR COMMUNICATIONS EQUIPMENT RESIN MOLDED, MULTI-ELEMENT CFM/CFR455 SERIES

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FILTERS FOR COMMUNICATIONS EQUIPMENT RESIN MOLDED, MULTI-ELEMENT CFM/CFR455 SERIES
FILTERS FOR COMMUNICATIONS EQUIPMENT
RESIN MOLDED, MULTI-ELEMENT
CFM/CFR455 SERIES
The following lines of filters are high
performance devices that achieve
ultimate stopband attenuation through
the use of multiple piezoelectric
elements connected in ladder form.
A few of the recommended applications
for these filters include high class
receivers, SSB communications
equipment, pocket pagers and
mobile radios.
CFM455 9 Ceramic Elements
CFR455 11 Elements Filters
DIMENSIONS: mm
CFM455
CFR455
20.0
23.5
10.5
10.5
4.0
4.0
1.2
1.2
4 – .8 Dia.
4 – .8 Dia.
햲
햳
햴
햵
4.0
햲
햳
7.5
16.8
햴
햵
4.0 7.5
20.0
Note: For safety purposes, connect the output of filters to the IF amplifier through a DC blocking capacitor. Avoid applying a direct current to the output of ceramic filters.
SPECIFICATIONS
Part
Number
Nominal Center
Frequency
(kHz)
3dB
Bandwidth
(kHz) min.
CFM455A
CFM455B
CFM455C
CFM455D
CFM455E
CFM455F
CFM455G
CFM455H
CFM455I
CFR455A
CFR4558
CFR455C
CFR455D
CFR455E
CFR455F
CFR455G
CFR455H
CFR455I
CFR455J
455
455
455
455
455
455
455
455
455
455
455
455
455
455
455
455
455
455
455
±13
±10
±9
±7
±5.5
±4.2
—
—
—
±13
±10
±9
±7
±5.5
±4.2
—
—
—
—
Bandwidth
6dB
Ripple
Bandwidth (dB) max. (kHz)
At
(kHz) min.
max. (dB)
±17.5
±15
±13
±10
±8
±6
±4
±3
±2
±17.5
±15
±13
±10
±8
±6
±4
±3
±2
±1.5
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
±30
±25
±23
±20
±16
±12
±10
±7.5
±5
±30
±25
±23
±20
±16
±12
±10
±7.5
±5
±4.5
Attenuation
455±100kHz
(dB) min.
Spurious
0.1~1MHz
(dB) min.
Insertion
Loss
(dB) max.
Input/Output
Impedance
(⍀)
50
50
50
50
45
45
45
45
45
60
60
60
60
55
55
55
55
55
55
30
30
30
30
30
30
30
30
30
40
40
40
40
40
40
40
40
40
40
3
3
3
3
5
6
6
6
7
4
4
4
4
6
6
6
7
8
8
1000
1000
1000
1500
1500
2000
2000
2000
2000
1000
1000
1000
1500
1500
2000
2000
2000
2000
2000
60
70
PART NUMBERING SYSTEM
CFM/CFR
SERIES
455
450 or 455
Frequency in kHz
D
BANDWIDTH
왖
Applicable in North American market only. 왔Applicable in European market only.
For more detailed information regarding this product line in North America, see Catalog No. P-05-D. To receive additional information on Murata Products call 1-800 -831-9172.
For more detailed information regarding this product line in Europe, see Catalog No. P05E-8.
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