All products listed on this page have been
de-emphasized and should not be used for new designs.
PIEZO FILTERS
MULTI-ELEMENT
HIGH PERFORMANCE
CFM/CFJ/CFR/CFS/CFL 455kHz
The following lines of filters are high performance devices
that achieve ultimate stopband attenuation through the use
of multiple piezoelectric elements connected in ladder form.
A few of the recommended applications for these filters
include high class receivers. SSB communications
equipment, pocket pagers and mobile radios.
CFM 455 9 Ceramic Elements
CFJ 455K 11 Ceramic Elements
CFR 455 11 Elements Filters
CFS 455 15 Element Filters
CFL 455 9 Element Filters (GDT Improved)
(NOT available in 450kHz.)
SPECIFICATIONS
CFM/CFJ/CFR/CFS/CFL 455kHz
Bandwidth
(kHz)
max.
Nominal Center
Frequency
(kHz)
3dB
Bandwidth
(kHz) min.
6dB
Bandwidth
(kHz) min.
Attenuation
455±100kHz 0.1 ~ 1MHz
(dB) min. (dB) min.
Spurious
Input/Output
Impedance
(Ohms)
GroupDelay
Time Dev.
sec. max. (kHz)
Part
Number
Ripple
(dB) max.
Insertion Loss
(dB) max.
At
(dB)
CFM455A
455
±13
±17.5
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
±30
50
30
3
3
3
3
5
6
6
6
7
4
4
4
4
6
6
6
1000
________________________________________________________
__________________________________________________
CFM455B 455 ±10 ±15 ±25
50 30 1000
________________________________________________________
CFM455C 455 ±9 ±13 ±23
__________________________________________________
50 30 1000
________________________________________________________
CFM455D 455 ±7 ±10 ±20
__________________________________________________
50 30 1500
________________________________________________________
CFM455E 455 ±5.5 ±8 ±16
__________________________________________________
45 30 1500
60
________________________________________________________
CFM455F 455 ±4.2 ±6 ±12
__________________________________________________
45 30 2000
________________________________________________________
CFM455G 455 ±4 ±10
__________________________________________________
45 30 2000
—
—
—
±13
________________________________________________________
CFM455H 455 ±3 ±7.5
__________________________________________________
45 30 2000
________________________________________________________
CFM455I 455 ±2 ±5
CFR455A 455 ±17.5 ±30
__________________________________________________
45 30 2000
60 40 1000
________________________________________________________
CFR4558 455 ±10 ±15 ±25
__________________________________________________
60 40 1000
________________________________________________________
CFR455C 455 ±9 ±13 ±23
__________________________________________________
60 40 1000
________________________________________________________
CFR455D 455 ±7 ±10 ±20
__________________________________________________
60 40 1500
________________________________________________________
CFR455E 455 ±5.5 ±8 ±16
__________________________________________________
55 40 1500
70
________________________________________________________
CFR455F 455 ±4.2 ±6 ±12
__________________________________________________
55 40 2000
________________________________________________________
CFR455G 455 ±4 ±10
__________________________________________________
55 40 2000
—
—
—
—
________________________________________________________
CFR455H 455 ±3 ±7.5
__________________________________________________
55 40 2000
3
3
3
7
8
8
________________________________________________________
CFR455I 455 ±2 ±5
__________________________________________________
55 40 2000
________________________________________________________
__________________________________________________
CFR455J
455
±1.5
±4.5
55
40
40 at 600
~ 700kHz
40 at 600
~ 700kHz
2000
CFJ455K5
455
—
2.4 (Total)
2
4.5 (Total)
—
60
6
2000
________________________________________________________
__________________________________________________
CFJ455K14
455
—
±1.1 ~ ±1.3
2
4.5 (Total)
60
80
—
60
7
2000
________________________________________________________
__________________________________________________
CFJ455K8 455 1.0 (Total) 1.5 3.0 (Total)
—
60
—
8
2000
CFS455A 455 ±17.5 ±30
±13
3
3
3
3
3
3
3
3
70
50
4
4
4
4
6
6
6
7
8
8
10
10
11
13
1500
________________________________________________________
CFS455B 455 ±10 ±15 ±25
__________________________________________________
70 50 1500
________________________________________________________
CFS455C 455 ±9 ±13 ±23
__________________________________________________
70 50 1500
________________________________________________________
CFS455D 455 ±7 ±10 ±20
__________________________________________________
70 50 1500
________________________________________________________
CFS455E 455 ±5.5 ±8 ±15
__________________________________________________
70 50 1500
________________________________________________________
CFS455F 455 ±4.2 ±6 ±12
__________________________________________________
70 50 2000
________________________________________________________
CFS455G 455 ±4 ±9
__________________________________________________
70 50 2000
—
—
—
—
________________________________________________________
CFS455H 455 ±3 ±7.5
__________________________________________________
70 50 2000
________________________________________________________
CFS455I 455 ±2 ±5
__________________________________________________
70 50 2000
3
3
0.5
________________________________________________________
CFS455J 455 ±1.5 ±4.5
CFL455BG5 455 ±13.5 ±27.5
__________________________________________________
60
60
60
60
60
50
30
30
30
30
2000
1000
1000
1000
1500
±10.5
25ꢀ(455±10.5
)
________________________________________________________
CFL455CG1 455 ±9.5 ±12.0 0.5 ±25.5
35ꢀ(455±9.5
)
________________________________________________________
CFL455DG2 455 ±7.0 ±9.0 0.5 ±21.0
60
35ꢀ(455±7
30ꢀ(455±5
)
)
________________________________________________________
CFL455EG1
455
±5.0
±7.0
0.5
±18
DIMENSIONS: mm
CFM 455
CFR 455
CFJ 455K
CFS 455
CFL 455G
20.0
23.5
23.5
29.0
16.5
10.5
4.0
10.5
4.0
10.5
4.0
10.5
4.0
10.5
4.0
1.2
4–.8Dia.
1.5
1.5
1.2
1.2
4–.5 Dia.
4–.8Dia.
4–.8Dia.
4–.8Dia.
(1)
(2)
(3)
(4)
(1)
(2)
(3)
(4)
(1)
(2)
(3)
(4)
(1)
(2)
(3)
(4)
4.2
7.5
4.0 7.5
4.0
4.2
7.5
7.4
4.0
7.5
26.0
14.2
16.8
20.0
20.0
*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 Rev. 1
433
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