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P05E.pdf
08.1.22
sales representatives or product engineers before ordering.
• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
• This PDF catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
Ceramic Filters (CERAFILr)/Ceramic Discriminators for Communications Equipment
CERAFILr Plastic Case General Use CFWLA Series
MARKING
7.5±0.5
EIAJ
CODE
2.9±0.3
1. Low profile, high selectivity
2. Available bandwidths are B to J as standard
3. Easily mountable on any PC board
4. Operating temperature range: -20 to +80 (degrees C)
Storage temperature range: -40 to +85 (degrees C)
Part Number
Nominal Center
6dB
Frequency (fn) Bandwidth
(kHz)
(kHz)
Stop
Bandwidth
(kHz)
0.8±0.1
3.5±0.5
0.15
s Features
2.6±0.3
2.9±0.3
2.9—
2.9—0.3
(4) (3)
Stop Band
Attenuation
(dB)
(2)
(1)
(5)
Insertion
Loss
(dB)
4.3±0.3
1.35±0.5
1.2±0.5
2.3±0.5
1.5 max.
Ceramic filter CFWLA series are low profile high
selectivity ceramic filters which use 6 elements in
ladder form.
They are best suitable to high-class transceivers,
cordless telephones and amateur radios.
7.0±0.5
11.0±0.5
0.6±0.1
Connection
(1) : Input
(2)(3)(4) : Ground
(5) : Output
(in mm)
2.0±0.3
Ripple
(dB)
Input/Output
Impedance
(ohm)
CFWLA455KBFA-B0
455.0
fn±15.0
min.
fn±30.0 max.
35 min.
4.0 max.
3.0 max.
[within 50dB] [within fn±100kHz] [at minimum loss point] [within fn±10kHz]
1500
CFWLA455KCFA-B0
455.0
fn±12.5
min.
fn±24.0 max.
35 min.
4.0 max.
[within 50dB] [within fn±100kHz] [at minimum loss point]
3.0 max.
[within fn±8kHz]
1500
CFWLA455KDFA-B0
455.0
fn±10.0
min.
fn±20.0 max.
35 min.
4.0 max.
[within 50dB] [within fn±100kHz] [at minimum loss point]
3.0 max.
[within fn±7kHz]
1500
CFWLA455KEFA-B0
455.0
fn±7.5
min.
fn±15.0 max.
35 min.
6.0 max.
[within 50dB] [within fn±100kHz] [at minimum loss point]
3.0 max.
[within fn±5kHz]
1500
CFWLA455KFFA-B0
455.0
fn±6.0
min.
fn±12.5 max.
35 min.
6.0 max.
[within 50dB] [within fn±100kHz] [at minimum loss point]
3.0 max.
[within fn±4kHz]
2000
CFWLA455KGFA-B0
455.0
fn±4.5
min.
fn±10.0 max.
35 min.
6.0 max.
[within 50dB] [within fn±100kHz] [at minimum loss point]
2.0 max.
[within fn±3kHz]
2000
CFWLA455KHFA-B0
455.0
fn±3.0
min.
fn±9.0 max.
60 min.
6.0 max.
[within 50dB] [within fn±100kHz] [at minimum loss point]
2.0 max.
[within fn±2kHz]
2000
CFWLA455KJFA-B0
455.0
fn±2.0
min.
fn±7.5 max.
60 min.
7.0 max.
2.0 max.
[within 50dB] [within fn±100kHz] [at minimum loss point] [within fn±1.5kHz]
10
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 shoud be an integral multiple of the "Minimum Quantity" shown in package page in this catalog.
s Test Circuit
(5)
R1
(1) (2) (3) (4)
R2
Rg
E1
S.S.G.
0dBm
E2
RF Voltmeter
Connection
(1) : Input
(5) : Output
(2)(3)(4) : Ground
Rg+R1=R2=Input/Output Impedance
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