KHz Band Ceramic IF Filters
KBF-RS, PS Series
FEATURES
• Small and low profile
• High selectivity
• Low insertion loss
• Adjustment free
• Various pass band
width available
APPLICATIONS
• Cordless phone
• Car audio
TEST CIRCUIT
• Pager
• Walkie & Talkie
• Remote control receiver
Filter
Output
Input Ground
R1
(AM radio section)
Rg
C
HOW TO ORDER
KBF - 455 RS - 20 A ꢀ ꢀ
RF
V.M.
R2
S.S.G.
Lead Length
ꢀ = 3.5mm
C = 2.2mm
R1+Rg=R2=Rating impedance of input/output matching
• C<50pF
(Including stray capacitance and input capacitance)
Option
ꢀ = Standard
Selectivity
DIMENSIONS
millimeters (inches)
KBF-PS Series (4 Elements)
A = High selectivity
AS = Super high selectivity
KBF-RS Series (6 Elements)
6.4
(0.252)
9.5 (0.374)
6.5 (0.256)
6.4 (0.252)
Pass Band-Width (kHz)
6 Elements = 20, 15, 10,
9, 7, 6, 4
6.4
(0.252)
6.3
(0.248)
0.6
3.5 (0.138)
*2.2 (0.087)
(0.024)
0.6
(0.024)
4 Elements = 20, 15, 10,
9, 7, 6, 4
3.5 (0.138)
*2.2 (0.087)
0.4
(0.016)
1
2
0.4 (0.016)
4.3
(0.169)
1
2
3
3
4
5
4.3
(0.169)
Number of Element
RS = 6 Elements
Input
➀
➁
➂
➃
4
0.9 (0.035)
0.9 (0.035)
Output
Ground
Ground
0.7 (0.028)
1.6 (0.063)
2.9 (0.114)
2.6 (0.102)
2.4 (0.094)
Input
➀
➁
➂
➃
1.9 (0.075)
4.3 (0.169)
PS = 4 Elements
Ground
Center Frequency
Output
Ground
450-460kHz available
Ground
➄
Series
*Lead length variation = 3.5 (0.138), 2.2 (0.087).
SPECIFICATIONS (455 kHz)
KBF-RS Series (6 Elements)
Center
*2.2 (0.087) Lead length available
Pass Band Width
6dB 40dB
Input/Output
Matching
Stop Band Insertion
Operating
Temperature
Part Number
Frequency
(f0)
RIPPLE
Loss
Attenuation
Impedance
KBF-455RS-20A
KBF-455RS-15A
KBF-455RS-12A
KBF-455RS-10A
KBF-455RS- 9A
KBF-455RS- 7A
KBF-455RS- 6AS
KBF-455RS- 4AS
±10kHz min. ±20kHz max.
±7.5kHz min. ±15kHz max.
±6.0kHz min. ±12.5kHz max.
±5.0kHz min. ±12kHz max.
±4.5kHz min. ±10kHz max.
4dB max.
1.5kΩ
455kHz±1.5kHz
455kHz±1.0kHz
-20°C
to
37dB min.
2.0dB max.
6dB max.
+80°C
±3.5kHz min.
±3.0kHz min.
±9kHz max.
±9kHz max.
2.0kΩ
55dB min.
±2.0kHz min. ±7.5kHz max.
KBF-PS Series (4 Elements)
*2.2mm Lead length available
Center
Pass Band Width
Input/Output
Stop Band Insertion
Operating
Part Number
Frequency
(f0)
RIPPLE
Matching
Loss
Temperature
Impedance
Attenuation
6dB
40dB
KBF-455PS-25A
KBF-455PS-20A
KBF-455PS-15A
KBF-455PS-12A
KBF-455PS-10A
KBF-455PS- 7A
KBF-455PS- 6AS
KBF-455PS- 4AS
±12.5kHz min.
±10kHz min.
±7.5kHz min.
±24kHz max.
±20kHz max.
±15kHz max.
4dB max.
1.5kΩ
455kHz±1.5kHz
27dB min.
±6.0kHz min. ±12.5kHz max.
-20°C
to
+80°C
2.0dB max.
±5.0kHz min.
±3.5kHz min.
±3.0kHz min.
±12kHz max.
±9kHz max.
±9kHz max.
6dB max.
2.0kΩ
455kHz±1.0kHz
35dB min.
±2.0kHz min. ±7.5kHz max.
Note: Center frequency is 450-460kHz available.
47