CFULA455KB2A-B0 View Datasheet(PDF) - Murata Manufacturing

Part Name

Description

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CFULA455KB2A-B0

Ceramic Filters (CERAFIL®)/Ceramic Discriminators for Communications Equipment

Murata Manufacturing 

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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)

6.5±0.3

MARKING

EIAJ

CODE

0.15±0.05

0.7±0.1

Connection

(1) : Input

(2) : Output

}(3)

(4)

:

Ground

0.8±0.3

2.4±0.3 1.8±0.3 0.7±0.3

0.5±0.1

(in mm)

(1) (2)

(3) (4)

Type

Marking

CFULB455KB4Y-B0 BY

CFULB455KC4Y-B0 CY

CFULB455KD1Y-B0 DY

CFULB455KE1Y-B0 EY

CFULB455KF1Y-B0 FY

CFULB455KG1Y-B0 GY

Part Number

CFULB455KB4Y-B0

Center

Frequency (fo)

(kHz)

455.0

±1.5kHz

6dB

Stop

Bandwidth Bandwidth

(kHz)

(kHz)

Stop Band

Attenuation

(dB)

fn±15.0 fn±35.0 max.

25 min.

min. [within 40dB] [within fn±100kHz]

Insertion

Loss

(dB)

GDT Deviation

(µs)

5.0 max.

15.0 max.

[at minimum loss point] [within fn±10kHz]

Input/Output

Impedance

(ohm)

1500

CFULB455KC4Y-B0

455.0

±1.5kHz

fn±12.5 fn±30.0 max.

25 min.

6.0 max.

15.0 max.

min. [within 40dB] [within fn±100kHz] [at minimum loss point] [within fn±8kHz]

1500

CFULB455KD1Y-B0

455.0

±1.0kHz

fn±10.0 fn±25.0 max.

23 min.

7.0 max.

20.0 max.

min. [within 40dB] [within fn±100kHz] [at minimum loss point] [within fn±7kHz]

1500

CFULB455KE1Y-B0

455.0

±1.0kHz

fn±7.5

min.

fn±20.0 max.

23 min.

8.0 max.

20.0 max.

[within 40dB] [within fn±100kHz] [at minimum loss point] [within fn±5kHz]

1500

CFULB455KF1Y-B0

455.0

±1.0kHz

fn±6.0

min.

fn±17.5 max.

23 min.

9.0 max.

20.0 max.

[within 40dB] [within fn±100kHz] [at minimum loss point] [within fn±4kHz]

2000

CFULB455KG1Y-B0

455.0

±1.0kHz

fn±4.5

min.

fn±15.0 max.

23 min.

10.0 max.

20.0 max.

[within 40dB] [within fn±100kHz] [at minimum loss point] [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

R1

Rg

E1

S.S.G.

0dBm

(1) (2)

(3) (4)

R2

E2

RF Voltmeter

Connection

(1) : Input

(2) : Output

(3)(4) :Ground

Rg+R1=R2=Input/Output Impedance

16

43

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