PIEZO FILTERS
SURFACE MOUNTED CHIP PIEZOELECTRIC CERAMICS FILTERS
FOR AM APPLICATIONS
CFUCG, SFGCG, SFPC, CFWC 455kHz
Along with the development of the AM chip filter, IF filters
for AM radios have also been made smaller, thinner and in
a chip configuration for surface mounting. This is one more
example of Murata Electronics’ leadership in converting
conventional electronic components to chip technology.
PRELIMINARY SPECIFICATIONS
SMD 455kHz
Center Frequency
Bandwidth (Total)
Ripple (max.)
Group Delay (max.)
*Insertion Stop Band
Source
And Load
Impedance
(Ohms)
____________________________________________________________
_________________
Part
Number
Loss
(max.)
dB
Atten. (min.)
at 100kHz
dB
Nom.
(kHz)
Tol.
(kHz)
3dB (min.) 6dB (min.) 40dB (max.)
Point of
Point of
ꢀS
dB
(kHz)
(kHz)
(kHz)
Measure
Measure
CFUCG455E-TC
CFUCG455F-TC
CFUCG455G-TC
CFUCG455FX-TC
CFUCG455GX-TC
CFUCG455HX-TC
SFGCG455AX-TC
SFGCG455BX-TC
SFGCG455CX-TC
SFGCG455DX-TC
SFGCG455EX-TC
SFPC455E-TC01
SFPC455F-TC01
SFPC455G-TC01
SFPC455H-TC01
CFWC455CZ-TC
CFWC455CZ2-TC
455
455
455
455
455
455
455
455
455
455
455
455
455
455
455
455
455
1.5
1.5
1
1.5
1
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
21 to 26
18 to 22
15
12
9
12
9
30
25
20
30
25
20
80
70
60
50
40
30
25
20
18
—
—
1.5
1.5
1.5
1
1
1
1
1
1
1
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
10.5
9
6
6
6
6
6
7
4
5
6
7
8
6
6
6
6
6
6
27
27
25
27
25
25
25
25
25
23
23
27
27
25
25
50
50
—
—
—
25
25
25
15
15
15
20
20
—
—
—
—
27
27
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
10.5
9
1500
1500
1500
1500
1500
1500
1000
1000
1000
1500
1500
1500
1500
1500
2000
1000
1000
1
6
2.0
1.5
1.5
1
35
30
25
20
15
15
12
9
1
1
1.5
1.5
1
1
—
—
—
—
—
—
0.5
0.5
6
—
—
DIMENSIONS: mm
CFUCG/SFGCG
SFPC
CO.5
1.2 0.1
7.0
3.0
1.0 0.1 1.0 0.1
Sealing
ꢀ
ꢁ
ꢀ ꢁ ꢂ
7.5
6.5
5 0 D
*
8.4
max.
ꢂ
4.0
7.5
max.
5.0 max.
Sealing
max.
4.0
6.0
3.0
1.0
1.0
1.5
2.0
1.5
1.6
ꢀ: INPUT
ꢁ: OUTPUT
ꢂ: GROUND
1.5
1.5
0.9 0.1
2.0
Sealing
SPECIFICATIONS
CFWC
TEST CIRCUIT
: EIA-J Monthly Code
E 4
*
CFWC455 Series
6.5
•
7.5 max.
R
1
*
Input Marking
Sealing
R.F.
Voltmeter
1.2 0.1
1.2 0.1
Rg
S.S.G.
0 dBm
C0.3
1.2 0.1
1.2 0.1
E
R
E
2
1
2
3.0
max.
1.5 0.3
1.5 0.3
3.0 5.5 3.0
11.5
3.0
5.5
Sealing
ꢀ: INPUT
Rg + R = Input/Output Impedance
1
ꢁ: OUTPUT
Connection
ꢂ ꢃ: GROUND
Body Color: Cream
Tolerance without notice: 0.3 mm
(in mm)
ꢀ: INPUT
ꢁ: OUTPUT
ꢂ ꢃ: GROUND
*Note: 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.
CG01-J
437