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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 Group Delay Flat Type Miniaturized Type CFULB_Y Series

Ceramic filter CFULB_Y series are miniature and high

performance filters. These filters, with only 6.3mm

high, are 65% the volume of conventional types

(CFULA455K_Y series).

Well suited for miniaturizing the communications

equipment, especially for a cellular phone.

s Features

1. Miniature, flat GDT characteristics.

2. Suitable for a cellular phone.

3. A variety of band width are available.

4. 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

CFULB455KB4Y-B0

CFULB455KC4Y-B0

CFULB455KD1Y-B0

CFULB455KE1Y-B0

CFULB455KF1Y-B0

CFULB455KG1Y-B0

Marking

BY

CY

DY

EY

FY

GY

}

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)

CFULB455KB4Y-B0

455.0

±1.5kHz

fn

±15.0

min.

fn

±35.0 max.

[within 40dB]

25 min.

[within fn

±100kHz]

5.0 max.

[at minimum loss point]

15.0 max.

[within fn

±10kHz]

1500

CFULB455KC4Y-B0

455.0

±1.5kHz

fn

±12.5

min.

fn

±30.0 max.

[within 40dB]

25 min.

[within fn

±100kHz]

6.0 max.

[at minimum loss point]

15.0 max.

[within fn

±8kHz]

1500

CFULB455KD1Y-B0

455.0

±1.0kHz

fn

±10.0

min.

fn

±25.0 max.

[within 40dB]

23 min.

[within fn

±100kHz]

7.0 max.

[at minimum loss point]

20.0 max.

[within fn

±7kHz]

1500

CFULB455KE1Y-B0

455.0

±1.0kHz

fn

±7.5

min.

fn

±20.0 max.

[within 40dB]

23 min.

[within fn

±100kHz]

8.0 max.

[at minimum loss point]

20.0 max.

[within fn

±5kHz]

1500

CFULB455KF1Y-B0

455.0

±1.0kHz

fn

±6.0

min.

fn

±17.5 max.

[within 40dB]

23 min.

[within fn

±100kHz]

9.0 max.

[at minimum loss point]

20.0 max.

[within fn

±4kHz]

2000

CFULB455KG1Y-B0

455.0

±1.0kHz

fn

±4.5

min.

fn

±15.0 max.

[within 40dB]

23 min.

[within fn

±100kHz]

10.0 max.

[at minimum loss point]

20.0 max.

[within fn

±3kHz]

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.

CFULB455K_Y series filters are 4-element ceramic filters and miniature versions of CFULA455K_Y series.

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