5
1
!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
Ceramic Filters (CERAFILr)/Ceramic Discriminators for Communications Equipment
CERAFILr kHz SMD Type SFPKA Series
The SFPKA series is comprised of small, high performance,
economical, thin (5.0mm) filters consisting of 4
ceramic elements.
Their innovative construction is perfect for shrinking
mobile communication products such as cordless phones,
pagers and transceivers.
■ Features
1. The filters are mountable by automatic placers.
2. The filters can be reflow soldered and withstand
washing.
3. They are slim, at only 5.0mm maximum thickness.
4. The bandwidth ranges from D to H.
5. Operating temperature range: -20 to +80 (degrees C)
Storage temperature range: -40 to +85 (degrees C)
7.5±0.3
5.0 max.
3.0±0.3
8.4 max.
2.0±0.3
1.5±0.3
7.0±0.3
0.9±0.1
MARKING
EIAJ
CODE
2.0±0.3
(1) (2) (3)
1.5±0.3 1.6±0.3Connection
(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)
Ripple
(dB)
Input/Output
Impedance
(ohm)
SFPKA455KD4A-R1 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] 2.0 max.
[within fn±7kHz] 1500
SFPKA455KE4A-R1 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] 1.5 max.
[within fn±5kHz] 1500
SFPKA455KF4A-R1 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] 1.5 max.
[within fn±4kHz] 1500
SFPKA455KG1A-R1 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] 1.5 max.
[within fn±3kHz] 1500
SFPKA455KH1A-R1 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] 1.5 max.
[within fn±2kHz] 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 D.C. blocking capacitor. Avoid applying a direct current to the output of ceramic filters.
The order quantity shoud be an integral multiple of the "Minimum Quantity" shown in package page in this catalog.
■ Test Circuit
Rg+R1=R2=Input/Output Impedance
E1 : S.S.G. Output Voltage
E1
R1
Rg
S.S.G.
0dBm
(1)
(2)
(3)
R2 E2 RF Voltmeter
(1) : Input
(2) : Ground
(3) : Output
• This PDF catalog is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our
sales representatives or product engineers before ordering.
• This PDF catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
!Note P05E.pdf
08.1.22
6
1
!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
■ Frequency Characteristics
SFPKA455KE4A-R1
100
40
30
20
10
0
Attenuation (dB)
G.D.T. (µsec.)
430 455 480
Frequency (kHz)
90
80
70
60
50
0
240
280
320
360
400
40
80
120
160
200
SFPKA455KE4A-R1
100
40
30
20
10
0
Attenuation (dB)
200 Frequency (kHz)
90
80
70
60
50
300 400 500 600 700 800 900 1000
• This PDF catalog is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our
sales representatives or product engineers before ordering.
• This PDF catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
!Note P05E.pdf
08.1.22
