Ceramic Filter for Communications Equipment CFWS455 Series
CERAFIL®
33
Resin Molded, High Selectivity Low Profile Type
Ceramic Filter (6-Element)
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.
Ceramic filter CFWS455-series are low profile high
selectivity ceramic filters which use 6 elements in ladder
form. They have the same electric characteristics as
CFW455-series, best suitable to high-class transceivers,
cordless telephones and amateur radios.
!FEATURES
1.Low profile, high selectivity.
2.Available bandwidths B to I as standard.
3.Easily mountable on an any PC boards.
4.Operating temperature range : Y20Dto W80D
Storage temperature range : Y40Dto W85D
!SPECIFICATIONS
(Back Side of PCB)
Connection
q Input
wer Ground
t Output Tol. without notice : T0.3
11.0T0.5 7.0T0.5
5-0.15
T
0.05
3.5T0.5
7.5T0.5
2.0
2.3T0.5
4.3
4.3
1.2
T
0.5
2.92.6 2.9 2.92.6 2.9
5-1.0φ Hole
2.0
0.6T0.1
0.8T0.1
qw e r
t
(in mm)
Connection
q Input
wer Ground
t Output
Rg
S.S.G.
R1
CFWS455
R2R.F.
Voltmeter
RgWR1=R2=Input/Output Impedance
q
t
wer
0
10
20
30
40
50
60
70
80
410 420 430 440 450 460 470 480 490 500
Frequency (kHz)
CFWS455E
Attenuation (dB)
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 of ceramic filters (between 5and 2,3,4).
Character-
istics
Part Number
Nominal Center
Frequency
(kHz)
CFWS455B
CFWS455C
CFWS455D
CFWS455E
CFWS455F
CFWS455G
CFWS455HT
CFWS455IT
455
455
455
455
455
455
455
455
6dB Bandwidth
(kHz)min.
T15
T12.5
T10
T07.5
T06
T04.5
T03
T02
Ripple
(dB)max.
3
3
3
3
3
2
2
2
50dB Bandwidth
(kHz)max.
T30
T24
T20
T15
T12.5
T10
T09
T07.5
Attenuation
455T100kHz
(dB)min.
35
35
35
35
35
35
60
60
Insertion Loss
(dB)max.
4
4
4
6
6
6
6
6
Input/Output
Impedance
(Ω)
1500
1500
1500
1500
2000
2000
2000
2000
!DIMENSIONS !TEST CIRCUIT !
FREQUENCY CHARACTERISTICS
