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
®
Ceramic Filter for Communications Equipment
CFWS455
Series
Resin Molded, High Selectivity Low Profile Type
Ceramic Filter (6-Element)
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 :
Y20D
to
W80D
Storage temperature range :
Y40D
to
W85D
!SPECIFICATIONS
Character- Nominal Center
6dB Bandwidth
istics
Frequency
(kHz)min.
(kHz)
Part Number
CFWS455B
CFWS455C
CFWS455D
CFWS455E
CFWS455F
CFWS455G
CFWS455HT
CFWS455IT
455
455
455
455
455
455
455
455
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
11.0
T
0.5
3.5
T
0.5 7.5
T
0.5
7.0
T
0.5
!TEST
CIRCUIT
!FREQUENCY
CHARACTERISTICS
CFWS455E
0
0.8
T
0.1
R
1
2.0
4.3
Rg
S.S.G.
CFWS455
t
q w er
Attenuation (dB)
10
20
5-0.15
T
0.05
2.0 2.3
T
0.5
t
q w e r
0.6
T
0.1
4.3
R
2
R.F.
Voltmeter
30
40
50
60
70
5-1.0φ Hole
1.2
T
0.5 2.6 2.9 2.9
2.6 2.9 2.9
(Back Side of PCB)
RgWR
1
=R
2
=Input/Output Impedance
Connection
q
Input
wer
Ground
t
Output
Tol. without notice :
T0.3
(in mm)
Connection
q
Input
wer
Ground
t
Output
80
410 420 430 440 450 460 470 480 490 500
Frequency (kHz)
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
5
and
2,3,4).
33
京公网安备 11010802033920号
EEWORLD
