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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 General Use CFWLB_A Series

CFWLB_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 67% the

volume of conventional types. (CFWLB_A series)

They are well suited for miniaturizing various kinds

of communications equipment, pocket pagers, 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)

2.7

±0.3

2.5

±0.3

9.5

±0.3

0.7

±0.3

0.5

±0.1

0.7

±0.1

0.9

±0.3

0.15

±0.05

(1)

(3)

(4)

(2)

(5)

2.8

±0.3

Type

CFWLB455KBFA-B0

CFWLB455KCFA-B0

CFWLB455KDFA-B0

CFWLB455KEFA-B0

CFWLB455KFFA-B0

CFWLB455KGFA-B0

CFWLB455KHFA-B0

CFWLB455KJFA-B0

Marking

W55B

W55C

W55D

W55E

W55F

W55G

W55H

W55I

Connection

(1) : Input

(2) : Output

(3)

(4) : Ground

(5)

(in mm)

}

MARKING

EIAJ

CODE

Part Number

Nominal Center

Frequency (fn)

(kHz)

6dB

Bandwidth

(kHz)

Stop

Bandwidth

(kHz)

Stop Band

Attenuation

(dB)

Insertion

Loss

(dB)

Input/Output

Impedance

(ohm)

CFWLB455KBFA-B0

455

fn

±15.0

min.

fn

±30.0 max.

[within 50dB]

35 min.

[within fn

±100kHz]

4.0 max.

[at minimum loss point]

1500

CFWLB455KCFA-B0

455

fn

±12.5

min.

fn

±24.0 max.

[within 50dB]

35 min.

[within fn

±100kHz]

4.0 max.

[at minimum loss point]

1500

CFWLB455KDFA-B0

455

fn

±10.0

min.

fn

±20.0 max.

[within 50dB]

35 min.

[within fn

±100kHz]

4.0 max.

[at minimum loss point]

1500

CFWLB455KEFA-B0

455

fn

±7.5

min.

fn

±15.0 max.

[within 50dB]

35 min.

[within fn

±100kHz]

6.0 max.

[at minimum loss point]

1500

CFWLB455KEFA004-B0

455

fn

±7.5

min.

fn

±15.0 max.

[within 60dB]

60 min.

[within fn

±15kHz to 30kHz]

5.0 max.

[at fn]

1500

CFWLB455KFFA-B0

455

fn

±6.0

min.

fn

±12.5 max.

[within 50dB]

35 min.

[within fn

±100kHz]

6.0 max.

[at minimum loss point]

2000

CFWLB455KGFA-B0

455

fn

±4.5

min.

fn

±10.0 max.

[within 50dB]

35 min.

[within fn

±100kHz]

6.0 max.

[at minimum loss point]

2000

CFWLB455KHFA-B0

455

fn

±3.0

min.

fn

±9.0 max.

[within 50dB]

55 min.

[within fn

±100kHz]

6.0 max.

[at minimum loss point]

2000

CFWLB455KJFA-B0

455

fn

±2.0

min.

fn

±7.0 max.

[within 50dB]

55 min.

[within fn

±100kHz]

7.0 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.

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

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