This is the PDF file of catalog No.P05E-9.
*CERAFIL
®
is the Registered Trademark
of Murata Manufacturing Co., Ltd.
No.P05E9.pdf 00.7.20
CERAFIL
®
Miniature Ceramic Filter for Communications Equipment
CF-M455
Series
-
Miniature High Selectivity Ceramic Filter
for Radio Equipment
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.
CFUM455-
CFWM455-
!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 :
Y20D
to
W80D
Storage temperature range :
Y40D
to
W85D
CFVM455-
CFZM455-
!SPECIFICATIONS
¡CFUM455-
Character-
istics
Part Number
CFUM455B
CFUM455C
CFUM455D
CFUM455E
CFUM455F
CFUM455G
CFUM455H
CFUM455I
Nominal Center
Frequency (kHz)
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.
¡CFWM455-
Character-
istics
Part Number
CFWM455B
CFWM455C
CFWM455D
CFWM455E
CFWM455F
CFWM455G
CFWM455H
CFWM455I
Nominal Center
Frequency (kHz)
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.
34
This is the PDF file of catalog No.P05E-9.
No.P05E9.pdf 00.7.20
¡CFVM455-
Character-
istics
Part Number
CFVM455B
CFVM455C
CFVM455D
CFVM455E
CFVM455E10
CFVM455F
CFVM455G
CFVM455H
Nominal
Center
Frequency
(kHz)
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
Attenuation
Bandwidth
(dB) min.
(kHz) max.
T25
T23
T20
T16
T12.5
T12
T10
T07.5
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
455
455
455
455
455
455
455
455
¡CFVM455-
series filters are 7-element.
¡CFZM455-
Character-
istics
Part Number
CFZM455B
CFZM455C
CFZM455D
CFZM455E
CFZM455E10
CFZM455F
CFZM455G
CFZM455H
Nominal
Center
Frequency
(kHz)
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
Attenuation
Bandwidth
(dB) min.
(kHz) max.
T25
T23
T20
T16
T12.5
T12
T10
T07.5
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
455
455
455
455
455
455
455
455
¡CFZM455-
series filters are 9-element ceramic filters and miniature versions of metal-case type CFX455- series.
They are excellent for high-class equipment.
35
This is the PDF file of catalog No.P05E-9.
No.P05E9.pdf 00.7.20
!DIMENSIONS
¡CFUM455-
6.5
6.5
¡CFWM455-
9.5
6.5
6.3
0.7T0.1
4-0.15T0.05
3.5
5-0.15T0.05
0.5T0.1
2.41.80.8 0.7
q w
e r
2.5 2.7
q
e
r
2.8
w
t
3.5
6.3
0.7T0.1
0.5T0.1
0.9
0.7
1.0
Connection
q
Input
w
Output
er
Ground
Tol. without notice :
T0.3
(in : mm)
Connection
q
Input
w
Output
ert
Ground
Tol. without notice :
T0.3
(in : mm)
4.3
¡CFVM455-
10.5
6.5
¡CFZM455-
10.5
6.5
6.3
0.7T0.1
3.5
5-0.15T0.05
1.1T0.5
8.3
6-0.15T0.05
0.5T0.1
8.6
6.3
1.0
4.3
0.7T0.1
3.5
0.5T0.1
4.3
q
e
1.2T0.5
r
w
t
1.2
Connection
q
Input
w
Output
ert
Ground
Tol. without notice :
T0.3
(in : mm)
0.9
e r t y
1.8 1.9 1.9 1.9
1.9 2.6 2.6
4.3
q
w
Connection
q
Input
w
Output
erty
Ground
Tol. without notice :
T0.3
(in : mm)
1.1
!TEST
CIRCUIT
¡CFUM455-
¡CFWM455-
R
1
CFUM455-
w
r
q
e
Rg
S.S.G.
R
2
R.F.
Voltmeter
Rg
S.S.G.
R
1
CFWM455-
q w
e r t
R
2
R.F.
Voltmeter
RgWR
1
=R
2
=Input/Output Impedance
RgWR
1
=R
2
=Input/Output Impedance
Connection
q
Input
w
Output
er
Ground
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.
Connection
q
Input
w
Output
ert
Ground
¡CFVM455-
¡CFZM455-
R
1
CFVM455-
q w
er t
R
1
CFZM455-
q w
erty
Rg
S.S.G.
R
2
R.F.
Voltmeter
S.S.G.
Rg
R
2
R.F.
Voltmeter
RgWR
1
=R
2
=Input/Output Impedance
RgWR
1
=R
2
=Input/Output Impedance
Connection
q
Input
w
Output
ert
Ground
Connection
q
Input
w
Output
erty
Ground
36
This is the PDF file of catalog No.P05E-9.
No.P05E9.pdf 00.7.20
!FREQUENCY
CHARACTERISTICS
¡CFUM455-
0
10
Attenuation (dB)
20
30
40
50
60
410 420 430 440 450 460 470 480 490 500
Frequency (kHz)
CFUM455B
CFUM455E
CFUM455H
¡CFWM455-
Spurious Characteristics
(CFWM455E)
0
10
20
Attenuation (dB)
30
40
50
60
70
410 420 430 440 450 460 470 480 490 500
Frequency (kHz)
CFWM455B
10
Attenuation (dB)
CFWM455E
CFWM
455H
20
30
40
50
60
0
1
2
3
4
5
6
7
Frequency (MHz)
8
9
10
0
¡CFVM455-
0
10
20
30
Attenuation (dB)
40
50
60
70
80
90
100
415 425 435 445 455 465 475 485 495
Frequency (kHz)
CFVM
455B
CFVM
455E
CFVM
455H
¡CFZM455-
0
10
20
30
Attenuation (dB)
40
50
60
70
80
90
100
415 425 435 445 455 465 475 485 495
Frequency (kHz)
CFZM
455B
CFZM
455E
CFZM
455H
¡Comparison
of CFUM, CFWM and CFZM Characteristics
0
10
20
30
Attenuation (dB)
40
50
60
70
80
90
100
415 425 435 445 455 465 475 485 495
Frequency (kHz)
CFZM
455E
CFWM
455E
CFUM
455E
37
Microcontroller MCU
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