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• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specification or transact the approval sheet for product specification before ordering.

Ceramic Filters (CERAFILr)/Ceramic Discriminators for Communications Equipment

CERAFILr Plastic Case Miniaturized Type CFULB_A Series

CFULB_A 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 65% the

volume of conventional types. (CFULA455K_A series)

They are well suited for miniaturizing various kinds

of communications equipment, pocket pagers, car

radios, cordless telephones and mobile telephones.

s Features

1. Miniature and high selectivity.

2. A variety of bandwidths are available.

3. Operating temperature range : -20 to +80 (degree C)

Storage temperature range : -40 to +85 (degree C)

1.8

±0.3

2.4

±0.3

6.5

±0.3

0.8

±0.3

0.5

±0.1

0.7

±0.1

0.7

±0.3

(1)

(2)

(3)

(4)

0.15

±0.05

Connection

(1) : Input

(2) : Output

(3)

: Ground

(4)

(in mm)

Type

CFULB455KB2A-B0

CFULB455KC2A-B0

CFULB455KD4A-B0

CFULB455KE4A-B0

CFULB455KF4A-B0

CFULB455KG1A-B0

CFULB455KH1A-B0

CFULB455KJ1A-B0

Marking

55B

55C

55D

55E

55F

55G

55H

55I

}

MARKING

EIAJ

CODE

Part Number

Center

Frequency (fo)

(kHz)

6dB

Bandwidth

(kHz)

Stop

Bandwidth

(kHz)

Stop Band

Attenuation

(dB)

Insertion

Loss

(dB)

Input/Output

Impedance

(ohm)

CFULB455KB2A-B0

455.0

±2.0kHz

fn

±15.0

min.

fn

±30.0 max.

[within 40dB]

27 min.

[within fn

±100kHz]

4.0 max.

[at minimum loss point]

1500

CFULB455KC2A-B0

455.0

±2.0kHz

fn

±12.5

min.

fn

±24.0 max.

[within 40dB]

27 min.

[within fn

±100kHz]

4.0 max.

[at minimum loss point]

1500

CFULB455KD4A-B0

455.0

±1.5kHz

fn

±10.0

min.

fn

±20.0 max.

[within 40dB]

27 min.

[within fn

±100kHz]

4.0 max.

[at minimum loss point]

1500

CFULB455KE4A-B0

455.0

±1.5kHz

fn

±7.5

min.

fn

±15.0 max.

[within 40dB]

27 min.

[within fn

±100kHz]

6.0 max.

[at minimum loss point]

1500

CFULB455KF4A-B0

455.0

±1.5kHz

fn

±6.0

min.

fn

±12.5 max.

[within 40dB]

27 min.

[within fn

±100kHz]

6.0 max.

[at minimum loss point]

2000

CFULB455KG1A-B0

455.0

±1.0kHz

fn

±4.5

min.

fn

±10.0 max.

[within 40dB]

25 min.

[within fn

±100kHz]

6.0 max.

[at minimum loss point]

2000

CFULB455KH1A-B0

455.0

±1.0kHz

fn

±3.0

min.

fn

±9.0 max.

[within 40dB]

35 min.

[within fn

±100kHz]

6.0 max.

[at minimum loss point]

2000

CFULB455KJ1A-B0

455.0

±1.0kHz

fn

±2.0

min.

fn

±7.5 max.

[within 40dB]

35 min.

[within fn

±100kHz]

6.0 max.

[at minimum loss point]

2000

For safety purposes, connect the output of filters to the IF amplifier through a D.C. blocking capacitor. Avoid applying a direct current to the output of ceramic filters.

(fn) means nominal center frequency 455kHz.

The order quantity should be an integral multiple of the "Minimum Quantity" shown in package page in this catalog.

s Test Circuit

E1

R1

Rg

S.S.G.

0dBm

R2

E2

RF Voltmeter

Connection

(1) : Input

(2) : Output

(3)(4) :Ground

(1)

(2)

(3)

(4)

Rg+R1=R2=Input/Output Impedance

Please read rating and !CAUTION (for storage and operating, rating, soldering and mounting, handling) in this PDF catalog to prevent smoking and/or burning, etc.

This catalog has only typical specifications. Therefore, you are requested to approve our product specification or to transact the approval sheet for product specificaion before ordering.

!Note

P05E11.pdf 02.9.2