Ceramic Filters (CERAFIL

r) for Communications Equipment

CERAFIL

r kHz SMD Type CFWKA Series

The CFWKA series is comprised of small, high-performance,

thin (3.0mm) filters consisting of 6 ceramic elements.

The filters are recommend for pager or hand-held

cellular phones.

c Features

1. The filters are mountable by automatic placers.

2. The filters can be reflow soldered.

3. They are slim, at only 3.0mm maximum thickness.

4. The filters are wide bandwidth, flat GDT within

pass band.

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

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

MARKING

11.5

5.5

3.0

1.2±0.1

1.5±0.3

1.2±0.1

1.2±0.1

1.5±0.3

1.2±0.1

C0.3

3.0

3.0

5.5

Dot marking

Sealing

Sealing

: Input

: Output

: Ground

(1)

(1)

(2)

(3)(4)

(2)

(4)

(3)

EIAJ

CODE

Tolerance ±0.3mm

in mm

()

Part Number

Nominal Center

Frequency (fn)

(kHz)

3dB

Bandwidth

(kHz)

6dB

Bandwidth

(kHz)

Stop

Bandwidth

(kHz)

Stop Band

Attenuation

(dB)

Stop Band Att.(2)

(dB)

Insertion Loss

(dB)

Ripple

(dB)

Input/Output

Impedance

(ohm)

CFWKA450KDFA-R0

450.0

-

fn±10.0

min.

fn±20.0 max.

[within 50dB]

50 min.

[within fn±100kHz]

-

4.0 max.

[at minimum loss point]

3.0 max.

[within fn±7kHz]

1500

CFWKA450KEFA-R0

450.0

-

fn±7.5

min.

fn±15.0 max.

[within 50dB]

50 min.

[within fn±100kHz]

-

6.0 max.

[at minimum loss point]

3.0 max.

[within fn±5kHz]

1500

CFWKA450KEFA001-R0

450.0

fn±6.5

min.

-

fn±15.0 max.

[within 50dB]

55 min.

[fn±18 to ±33kHz]

50 min.

[within fn±100kHz]

4.0 max.

[at fn]

3.0 max.

[within fn±6.5kHz]

1500

CFWKA450KFFA-R0

450.0

-

fn±6.0

min.

fn±12.5 min.

[within 50dB]

50 min.

[within fn±100kHz]

-

6.0 max.

[at minimum loss point]

3.0 max.

[within fn±4kHz]

1500

CFWKA450KGFA-R0

450.0

-

fn±4.5

min.

fn±11.0 max.

[within 50dB]

50 min.

[within fn±100kHz]

-

6.0 max.

[at minimum loss point]

2.0 max.

[within fn±3kHz]

1500

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

Rg

S.S.G.

0dBm

R1

RF Voltmeter

Connection

(1): Input

(2): Output

(3)(4): Ground

(2)

(4)

(1)

R2

E2

(3)

Rg+R1=R2=Input/Output Impedance

c Test Circuit

P05E.pdf

Nov.24,2011

13

• 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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