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!Note
• Please read rating and !CAUTION (for storage and operating, rating, soldering and mounting, 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 specification or transact the approval sheet for product specification before ordering.
Ceramic Filters (CERAFILr)/Ceramic Discriminators for Communications Equipment
CERAFILr Plastic Case General Use CFULA_A Series
CFULA_A series are high selectivity ceramic filters,
which consist of 4 ceramic elements connected in a
ladder form.
Most suitable for digital communications and cellular
phones because of their improved GDT characteristics.
■ Features
1. High selectivity.
2. A variety of bandwidth available.
3. Excellent GDT characteristics are available within
pass bandwidth.
4. Easily mounted on a printed circuit board
5. Operating temperature range : -20 to +80 (degree C)
Storage temperature range : -40 to +85 (degree C)
3.0±0.3
7.0±0.34.2±0.3 7.3±0.3
0.8±0.1
0.6±0.1
1.2±0.5
8.0±0.3
3.3±0.5
2.7±0.3
(1)(2)
(3)
0.3±0.1
1.5max.
0.15±0.05
Connection
(1) : Input
(2) : Ground
(3) : Output
(in mm)
Type
CFULA455KB2A-B0
CFULA455KC2A-B0
CFULA455KD4A-B0
CFULA455KE4A-B0
CFULA455KF4A-B0
CFULA455KG1A-B0
CFULA455KH1A-B0
Marking
B
C
D
E
F
G
HT
MARKING
EIAJ
CODE
Part Number
Center
Frequency (fo)
(kHz)
6dB
Bandwidth
(kHz)
Stop
Bandwidth
(kHz)
Stop Band
Attenuation
(dB)
Insertion
Loss
(dB)
Input/Output
Impedance
(ohm)
CFULA455KB2A-B0
455.0
±2.0kHz
fn±15.0
min.
fn±30.0 max.
[within 40dB]
27 min.
[within fn±100kHz]
4.0 max.
[at minimum loss point]
1500
CFULA455KC2A-B0
455.0
±2.0kHz
fn±12.5
min.
fn±24.0 max.
[within 40dB]
27 min.
[within fn±100kHz]
4.0 max.
[at minimum loss point]
1500
CFULA455KD4A-B0
455.0
±1.5kHz
fn±10.0
min.
fn±20.0 max.
[within 40dB]
27 min.
[within fn±100kHz]
4.0 max.
[at minimum loss point]
1500
CFULA455KE4A-B0
455.0
±1.5kHz
fn±7.5
min.
fn±15.0 max.
[within 40dB]
27 min.
[within fn±100kHz]
6.0 max.
[at minimum loss point]
1500
CFULA455KF4A-B0
455.0
±1.5kHz
fn±6.0
min.
fn±12.5 max.
[within 40dB]
27 min.
[within fn±100kHz]
6.0 max.
[at minimum loss point]
2000
CFULA455KG1A-B0
455.0
±1.0kHz
fn±4.5
min.
fn±10.0 max.
[within 40dB]
25 min.
[within fn±100kHz]
6.0 max.
[at minimum loss point]
2000
CFULA455KH1A-B0
455.0
±1.0kHz
fn±3.0
min.
fn±9.0 max.
[within 40dB]
35 min.
[within fn±100kHz]
6.0 max.
[at minimum loss point]
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.
■ Test Circuit
E1
R1
Rg
S.S.G.
0dBm
R2 E2
RF Voltmeter
Connection
(1) : Input
(2) : Ground
(3) : Output
(1) (2)
(3)
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
