Ceramic Filters (CERAFIL

r) for Communications Equipment

CERAFIL

r Plastic Case General Use CFULA Series

CFULA series are high selectivity ceramic filters,

which consist of 4 ceramic elements connected in a

ladder form.

They are most suitable for digital communications

and cellular phones because of their improved GDT

characteristics.

c Features

1. High selectivity

2. A variety of bandwidths available

3. Excellent GDT characteristics are available within

pass bandwidth.

4. Easily mounted on a printed circuit board

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

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

0.8±0.1

0.6±0.1

1.2±0.5

8.0±0.3

MARKING

EIAJ

CODE

3.3±0.5

2.7±0.3

(1)

(2)

(3)

0.15±0.05

Connection

(1): Input

(2): Ground

(3): Output

(in mm)

Part Number

Center

Frequency (fo)

(kHz)

6dB

Bandwidth

(kHz)

Stop

Bandwidth

(kHz)

Stop Band

Attenuation

(dB)

Insertion Loss

(dB)

Input/Output

Impedance

(ohm)

CFULA455KB2A-B0

455

±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

CFULA455KC2A-B0

455

±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

CFULA455KD4A-B0

455

±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

CFULA455KE4A-B0

455

±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

CFULA455KF4A-B0

455

±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

CFULA455KG1A-B0

455

±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

CFULA455KH1A-B0

455

±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

Center frequency (fo) defined by the center of 6dB bandwidth.

(fn) means nominal center frequency 455kHz.

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.

E1

R1

Rg

S.S.G.

0dBm

R2

E2

RF Voltmeter

Connection

(1): Input

(2): Ground

(3): Output

(1) (2)

(3)

Rg+R1=R2=Input/Output Impedance

c Test Circuit

P05E.pdf

Nov.24,2011

35

• 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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