Miniature Ceramic Filter for Communications Equipment CF--M455 Series
CERAFIL®
34
Miniature High Selectivity Ceramic Filter
for Radio Equipment
No.P05E9.pdf 00.7.20This is the PDF file of catalog No.P05E-9.
*CERAFIL®is the Registered Trademark
of Murata Manufacturing Co., Ltd.
CF-M455-series ceramic filters are miniature, high-
performance ceramic filters composed of piezoelectric
elements connected in a ladder form.
These filters, with only 6.3mm high, are 60% the volume of
conventional types, They are well suited for miniaturizing
various kinds of communications equipment, pocket pagers,
car radios, cordless telephones and Mobile telephones.
!FEATURES
1. Miniature, high selectivity.
2. 4 elements, 6 elements, 7 elements and 9 elements types
are all available, making selection easy in accordance with
desired selectivity.
3. A variety of bandwidths are available.
4. Operating temperature range : Y20Dto W80D
Storage temperature range : Y40Dto W85D
!SPECIFICATIONS
¡CFUM455-
¡CFWM455-
CFUM455-CFWM455-
CFVM455-CFZM455-
Character-
istics
Part Number
Nominal Center
Frequency (kHz)
CFUM455B
CFUM455C
CFUM455D
CFUM455E
CFUM455F
CFUM455G
CFUM455H
CFUM455I
455
455
455
455
455
455
455
455
6dB Bandwidth
(kHz) min.
T15
T12.5
T10
T07.5
T06
T04.5
T03
T02
40dB Bandwidth
(kHz) max.
T30
T24
T20
T15
T12.5
T10
T09
T07.5
Attenuation
455T100kHz
(dB) min.
27
27
27
27
27
25
35
35
Insertion Loss
(dB) max.
4
4
4
6
6
6
6
7
Input/Output
Impedance
(Ω)
1500
1500
1500
1500
2000
2000
2000
2000
¡CFUM455-series filters are 4-element ceramic filters and miniature versions of CFUS455-series.
Character-
istics
Part Number
Nominal Center
Frequency (kHz)
CFWM455B
CFWM455C
CFWM455D
CFWM455E
CFWM455F
CFWM455G
CFWM455H
CFWM455I
455
455
455
455
455
455
455
455
6dB Bandwidth
(kHz) min.
T15
T12.5
T10
T07.5
T06
T04.5
T03
T02
50dB Bandwidth
(kHz) max.
T30
T24
T20
T15
T12.5
T10
T09
T07.5
Attenuation
455T100kHz
(dB) min.
35
35
35
35
35
35
55
55
Insertion Loss
(dB) max.
4
4
4
6
6
6
6
7
Input/Output
Impedance
(Ω)
1500
1500
1500
1500
2000
2000
2000
2000
¡CFWM455-series filters are 6-element ceramic filters and miniature version of CFWS455-series.
35
No.P05E9.pdf 00.7.20This is the PDF file of catalog No.P05E-9.
Character-
istics
Part Number
Nominal
Center
Frequency
(kHz)
CFVM455B
CFVM455C
CFVM455D
CFVM455E
CFVM455E10
CFVM455F
CFVM455G
CFVM455H
455
455
455
455
455
455
455
455
3dB
Bandwidth
(kHz) min.
T10
T09
T07
T05.5
T05.0
T04.2
Y
Y
6dB
Bandwidth
(kHz) min.
T15
T13
T10
T08
T07.0
T06
T04
T03
Ripple
(dB)max.
3
3
3
3
3
3
3
3
60dB
Bandwidth
(kHz) max.
T25
T23
T20
T16
T12.5
T12
T10
T07.5
Attenuation
(dB) min.
50
50
50
50
50
50
50
50
Spurious
Response
(dB)min.
25
25
25
25
25
25
25
25
Insertion
Loss
(dB) max.
4
4
4
6
6
6
6
6
Input/Output
Impedance
(Ω)
1000
1000
1500
1500
1500
1500
1500
1500
¡CFVM455-
¡CFVM455-series filters are 7-element.
Character-
istics
Part Number
Nominal
Center
Frequency
(kHz)
CFZM455B
CFZM455C
CFZM455D
CFZM455E
CFZM455E10
CFZM455F
CFZM455G
CFZM455H
455
455
455
455
455
455
455
455
3dB
Bandwidth
(kHz) min.
T10
T09
T07
T05.5
T05.0
T04.2
Y
Y
6dB
Bandwidth
(kHz) min.
T15
T13
T10
T08
T07.5
T06
T04
T03
Ripple
(dB)max.
3
3
3
3
3
3
3
3
70dB
Bandwidth
(kHz) max.
T25
T23
T20
T16
T12.5
T12
T10
T07.5
Attenuation
(dB) min.
70
70
70
70
70
70
70
70
Spurious
Response
(dB)min.
40
40
40
40
40
50
50
50
Insertion
Loss
(dB) max.
4
4
4
6
6
6
6
7
Input/Output
Impedance
(Ω)
1000
1000
1500
1500
1500
1500
1500
1500
¡CFZM455-
¡CFZM455-series filters are 9-element ceramic filters and miniature versions of metal-case type CFX455-series.
They are excellent for high-class equipment.
36
No.P05E9.pdf 00.7.20This is the PDF file of catalog No.P05E-9.
!DIMENSIONS
¡CFUM455-¡CFWM455-
Tol. without notice : T0.3
(in : mm)
Connection
q Input
w Output
er Ground
6.5
6.3
4-0.15T0.05
3.5
2.41.80.8 0.7
4.3
1.0
6.5
0.7T0.1
0.5T0.1
qw
er
¡CFVM455-¡CFZM455-
Tol. without notice : T0.3
(in : mm)
Connection
q Input
w Output
ert Ground
6.5
0.7T0.1
0.5T0.1
1.2T0.5 1.9 2.6 2.6 1.2
4.3
8.3
1.1T0.5
5-0.15T0.05
10.5
6.33.5
qw
rte
Tol. without notice : T0.3
(in : mm)
Connection
q Input
w Output
erty Ground
6.5
0.7T0.1
0.5T0.1
0.9 1.81.9 1.9 1.9 1.1
4.3
8.6
6-0.15T0.05
10.5
6.33.5
qw
rety
Tol. without notice : T0.3
(in : mm)
Connection
q Input
w Output
ert Ground
9.5
6.3
5-0.15
T
0.05
3.5
2.5 2.7 2.8 0.9
0.7
4.3
1.0
6.5
0.7
T
0.1
0.5T0.1
qw
etr
!TEST CIRCUIT
¡CFUM455-¡CFWM455-
R.F.
Voltmeter
Connection
q Input
w Output
er Ground
R2
CFUM455-
R1
Rg
S.S.G.
RgWR1=R2=Input/Output Impedance
q
e
wr
¡CFVM455-¡CFZM455-
Connection
q Input
w Output
ert Ground
R.F.
Voltmeter
R2
CFVM455-
R1
Rg
S.S.G.
RgWR1=R2=Input/Output Impedance
qw
ert
Connection
q Input
w Output
erty Ground
R.F.
Voltmeter
R2
CFZM455-
R1
Rg
S.S.G.
RgWR1=R2=Input/Output Impedance
qw
erty
R.F.
Voltmeter
Connection
q Input
w Output
ert Ground
R2
CFWM455-
R1
Rg
S.S.G.
RgWR1=R2=Input/Output Impedance
qw
ert
Note : To take best advantage of safety feature of ceramic filters, connect the output to an IF amplifier through a DC cut capacitor.
Avoid directly applying a direct current to output end of ceramic filters.
37
No.P05E9.pdf 00.7.20This is the PDF file of catalog No.P05E-9.
!FREQUENCY CHARACTERISTICS
¡CFWM455-
¡CFUM455-
0
10
20
30
40
50
60
410 420 430 440 450 460 470 480 490 500
Frequency (kHz)
Attenuation (dB)
CFUM455B
CFUM455E
CFUM455H
¡CFVM455-
0
10
20
30
40
50
60
70
80
90
100
415 425 435 445 455 465 475 485 495
Frequency (kHz)
Attenuation (dB)
CFVM
455B
CFVM
455E
CFVM
455H
¡Comparison of CFUM, CFWM and CFZM Characteristics
0
10
20
30
40
50
60
70
80
90
100
415 425 435 445 455 465 475 485 495
Frequency (kHz)
Attenuation (dB)
CFUM
455E
CFWM
455E
CFZM
455E
¡CFZM455-
0
10
20
30
40
50
60
70
80
90
100
415 425 435 445 455 465 475 485 495
Frequency (kHz)
Attenuation (dB)
CFZM
455B
CFZM
455E
CFZM
455H
10
0
20
30
40
50
60
70
410 420 430 440 450 460 470 480 490 500
Frequency (kHz)
Attenuation (dB)
CFWM455B
CFWM455E
CFWM
455H
0
10
20
30
40
50
60
012345678910
Frequency (MHz)
Attenuation (dB)
Spurious Characteristics (CFWM455E)
