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P05E11.pdf 02.9.2
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Ceramic Filters (CERAFILr)/Ceramic Discriminators for Communications Equipment
CERAFILr Plastic Case General Use CFWLB_A Series
CFWLB_A series ceramic filters are miniature, high
performance ceramic filters composed of piezoelectric
elements connected in a ladder form.
These filters, with only 6.3mm high, are 67% the
volume of conventional types. (CFWLB_A series)
They are well suited for miniaturizing various kinds
of communications equipment, pocket pagers, pagers,
car radios, cordless telephones and mobile telephones.
s Features
1. Miniature and high selectivity.
2. A variety of bandwidths are available.
3. Operating temperature range : -20 to +80 (degree C)
Storage temperature range : -40 to +85 (degree C)
9.5±0.3
MARKING
EIAJ
CODE
0.7±0.1
0.15±0.05
2.5±0.3 2.7±0.3 2.8±0.3
0.9±0.3
0.5±0.1
Connection
(1) : Input
(2) : Output
}(3)
(4) : Ground
(5)
(in mm)
(1)
(2)
(3) (4) (5)
0.7±0.3
Type
Marking
CFWLB455KBFA-B0 W55B
CFWLB455KCFA-B0 W55C
CFWLB455KDFA-B0 W55D
CFWLB455KEFA-B0 W55E
CFWLB455KFFA-B0 W55F
CFWLB455KGFA-B0 W55G
CFWLB455KHFA-B0 W55H
CFWLB455KJFA-B0 W55I
Part Number
CFWLB455KBFA-B0
Nominal Center
Frequency (fn)
(kHz)
455
6dB
Bandwidth
(kHz)
fn±15.0
min.
Stop
Bandwidth
(kHz)
fn±30.0 max.
[within 50dB]
Stop Band
Attenuation
(dB)
35 min.
[within fn±100kHz]
Insertion
Loss
(dB)
4.0 max.
[at minimum loss point]
Input/Output
Impedance
(ohm)
1500
CFWLB455KCFA-B0
455
fn±12.5
min.
fn±24.0 max.
[within 50dB]
35 min.
[within fn±100kHz]
4.0 max.
[at minimum loss point]
1500
CFWLB455KDFA-B0
455
fn±10.0
min.
fn±20.0 max.
[within 50dB]
35 min.
[within fn±100kHz]
4.0 max.
[at minimum loss point]
1500
CFWLB455KEFA-B0
455
fn±7.5
min.
fn±15.0 max.
[within 50dB]
35 min.
[within fn±100kHz]
6.0 max.
[at minimum loss point]
1500
CFWLB455KEFA004-B0
455
fn±7.5
min.
fn±15.0 max.
60 min.
[within 60dB] [within fn±15kHz to 30kHz]
5.0 max.
[at fn]
1500
CFWLB455KFFA-B0
455
fn±6.0
min.
fn±12.5 max.
[within 50dB]
35 min.
[within fn±100kHz]
6.0 max.
[at minimum loss point]
2000
CFWLB455KGFA-B0
455
fn±4.5
min.
fn±10.0 max.
[within 50dB]
35 min.
[within fn±100kHz]
6.0 max.
[at minimum loss point]
2000
CFWLB455KHFA-B0
455
fn±3.0
min.
fn±9.0 max.
[within 50dB]
55 min.
[within fn±100kHz]
6.0 max.
[at minimum loss point]
2000
CFWLB455KJFA-B0
455
fn±2.0
min.
fn±7.0 max.
[within 50dB]
55 min.
[within fn±100kHz]
7.0 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.
The order quantity should be an integral multiple of the "Minimum Quantity" shown in package page in this catalog.
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