Ceramic Filters (CERAFIL

r) for Communications Equipment

CERAFIL

r Plastic Case Group Delay Flat Type CFWLB_Y Series

Ceramic filter CFWLB_Y series are miniature and

high-performance filters. These filters, only

6.3mm high, are 67% the volume of conventional types.

Well suited for miniaturizing communications

equipment, especially for a cellular phone.

c Features

1. Miniature, flat GDT characteristics

2. Suitable for a cellular phone

3. A variety of bandwidths are available.

4. 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

Center

Frequency (fo)

(kHz)

6dB

Bandwidth

(kHz)

Stop

Bandwidth

(kHz)

Stop Band

Attenuation

(dB)

Insertion Loss

(dB)

GDT Deviation

(µs)

Input/Output

Impedance

(ohm)

CFWLB455KB4Y-B0

455

±1.5kHz

fn±15.0

min.

fn±30.0 max.

[within 50dB]

40 min.

[within fn±100kHz]

6.0 max.

[at minimum loss point]

30.0 max.

[within fn±10kHz]

1500

CFWLB455KC4Y-B0

455

±1.5kHz

fn±12.5

min.

fn±27.5 max.

[within 50dB]

40 min.

[within fn±100kHz]

7.0 max.

[at minimum loss point]

30.0 max.

[within fn±8kHz]

1500

CFWLB455KD1Y-B0

455

±1.0kHz

fn±10.0

min.

fn±25.0 max.

[within 50dB]

40 min.

[within fn±100kHz]

8.0 max.

[at minimum loss point]

30.0 max.

[within fn±7kHz]

1500

CFWLB455KE1Y-B0

455

±1.0kHz

fn±7.5

min.

fn±20.0 max.

[within 50dB]

40 min.

[within fn±100kHz]

9.0 max.

[at minimum loss point]

30.0 max.

[within fn±5kHz]

1500

CFWLB455KF1Y-B0

455

±1.0kHz

fn±6.0

min.

fn±17.5 max.

[within 50dB]

35 min.

[within fn±100kHz]

10.0 max.

[at minimum loss point]

40.0 max.

[within fn±4kHz]

2000

CFWLB455KG1Y-B0

455

±1.0kHz

fn±4.5

min.

fn±15.0 max.

[within 50dB]

40 min.

[within fn±100kHz]

11.0 max.

[at minimum loss point]

40.0 max.

[within fn±3kHz]

2000

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

(fn) means nominal center frequency 455kHz.

CFWLB455K_Y series filters are 4-element ceramic filters and miniature versions of CFWLA455K_Y 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.

(1)

(2)

(3)

(4)

(5)

R1

R2

E2

E1

Rg

S.S.G.

0dBm

RF Voltmeter

Connection

(1)

(2)

(3)(4)(5)

: Input

: Output

: Ground

Rg+R1=R2=Input/Output Impedance

c Test Circuit

P05E.pdf

Nov.24,2011

49

• 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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