
5
3.3
12Max.
9Max.
8Max.
12Max.
4.5
0.5
4.5
5.2
1
TYPE CFMT
TOKO
Center
Bandwidth
Selectivity
Ripple
Input Level
Part
Frequency
at 6dB
at Fo±9kHz
in Passband
for 0.6mV
Note
Number
(kHz)
(kHz Min.)
(dB Min.)
(dB Max.)
Output (dB)
PCFMT-023
450±1.2
6.0
20.0
1.0
77.7±3.0
PCFMT-049A
450±1.0
7.0
24.0
0.7
90.0±3.0
30
40
20
10
0
440
450
460
Frequency (kHz)
Atten
uation
(dB)
PCFMT-023
(Unit : mm)
AM Ceramic Filters with Matching Coil
TYPE
CFMA
CFMT
Description
Type CFM2 filter for AM IF combined with a matching
inductor and encased in resin.
Center frequency range: 450 to 470kHz.
Bandwidth at 6dB: 2 to 11kHz.
Features
Can be preset if required.
High selectivity — suited to a wide range of applications.
Low temperature coefficient.
Low spurious response.
Applications
AM radio cassettes, AM stereo application sets.
Wireless data communications equipment.
SELECTION GUIDE FOR STANDARD FILTERS
TYPE CFMA, CFMT (CERASIZER/Triple-tuned)
TYPE CFMA
TOKO
Center
Bandwidth
Selectivity
Ripple
Input Level
Part
Frequency
at 6dB
at Fo±9kHz
in Passband
for 0.6mV
Note
Number
(kHz)
(kHz Min.)
(dB Min.)
(dB Max.)
Output (dB)
PCFMA-027
450±1.5
5.0
25.0
1.0
78.5±3.0
PCFMA-003
455±2.5
5.0
25.0
1.0
78.5±3.0
PCFMA-050
459±1.5
5.0
25.0
1.0
78.5±3.0
PCFMA-012
460±2.5
5.0
25.0
1.5
78.5±3.0
PCFMA-008
468±2.5
5.0
25.0
1.0
78.5±3.0
PCFMA-221
450±1.0
9.5
17.0
0.7
87.0±3.0
50pF
2k
7pF
300k
S.G.
E.V.
3
2
6
1
8
7
4
5
30
40
20
10
0
440
450
460
Frequency (kHz)
Atten
uation
(dB)
CFMA-027
(Unit : mm)
Note: 50pF includes circuit capacitance
CFMA (7P+CFM2)
CFMA
CFMT
CFMT (7P+CFM2)