Ceramic Filters (CERAFIL

r) for Communications Equipment

CERAFIL

r Plastic Case Miniaturized Type CFWLB Series

CFWLB series ceramic filters are miniature, high-

performance ceramic filters composed of piezoelectric

elements connected in a ladder form.

These filters, only 6.3mm high, are 67% the volume

of conventional types.

They are well suited for miniaturizing various kinds

of communications equipment, pocket pagers, pagers,

car radios, cordless telephones and mobile telephones.

c Features

1. Miniature and high selectivity

2. A variety of bandwidths are available.

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

Storage temperature range: -40 to +85 (°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

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

455.0

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

455.0

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

455.0

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

455.0

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

455.0

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

455.0

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

455.0

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

455.0

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

455.0

fn±2.0

min.

fn±7.0 max.

[within 50dB]

55 min.

[within fn±100kHz]

7.0 max.

[at minimum loss point]

2000

CFWLB455K_series filters are 4-element ceramic filters and miniature versions of CFWLA455K_series.

For safety purposes, connect the output of filters to the IF amplifier through a DC 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.

P05E.pdf

Nov.24,2011

41

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

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