Ceramic Filter for Communications Equipment

CFWS455 Series

CERAFIL®

33

Resin Molded, High Selectivity Low Profile Type

Ceramic Filter (6-Element)

No.P05E9.pdf 00.7.20

This 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 :

Y20D to W80D

Storage temperature range :

Y40D to W85D

!SPECIFICATIONS

(Back Side of PCB)

Connection

q

Input

wer

Ground

t

Output

Tol. without notice :

T0.3

11.0

T0.5

7.0

T0.5

5-0.15

T0.05

2.0 2.3T0.5

1.2

T0.5

2.9

2.6

2.9

2.9

2.6

2.9

5-1.0

φ Hole

2.0

0.6

T0.1

0.8

T0.1

qw e

r

t

(in mm)

Connection

q

Input

wer

Ground

t

Output

Rg

S.S.G.

R1

CFWS455

R2

R.F.

Voltmeter

Rg

WR1=R2=Input/Output Impedance

q

t

we r

0

10

20

30

40

50

60

70

80

410 420 430 440 450 460 470 480 490 500

Frequency (kHz)

CFWS455E

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).

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

455

T100kHz

(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