FILTERS
FOR AM APPLICATIONS–SIGNAL DETECTION
BFU/SFZ SERIES
FEATURES
s fa – fr: Difference between the anti-
resonant frequency and the resonant
frequency
s Most suitable for IC Station Detectors
(SD) such as the LA 1135 (by Sanyo)
DIMENSIONS: mm
BFU Series
7.0 ± 0.3
MARKING
M
0.8 ± 0.1
1.1 ± 0.1
1.75 ± 0.5
: EIA-J Date Code
5.0 ± 0.2
SPECIFICATIONS
Part
Number
BFU450K3
BFU450C
BFU450C4N
Part
Number
SFZ450C3N
Resonant
Frequency (kHz)
450 ± 1
450 ± 1
450 ± 0.8
Center
Frequency (kHz)
450 ± 1
PART NUMBERING SYSTEM
BFU
SFZ Series̄
7.0 ± 0.3
NO DIRECTIVITY
MARKING
M
1.1 ± 0.1
0.8 ± 0.1
ቢባቤ
ቧቦብ
2.5 ± 0.2
: EIA-J Date Code
3.5
+1.0
– 0.5
1.75 ± 0.5
3.5 ± 0.5
0.25
0.1
Connection
ቢ INPUT
ባ ቦ GROUND
ቤ ብ DIRECT
CONNECTION
ቧ OUTPUT
fa – fr
(kHz)
27.5 ± 4.5
14 ± 2
9±2
3dB Bandwidth
(kHz)
2.5 ± 1
Resonant
Resistance (⍀) max.
30 (10)
20 (10)
30 (12)
Selectivity
f0 – 9kHz
(30dB)
f0 + 9kHz
(24dB)
Capacitance
(pF)
550 ± 20%
360 ± 20%
360 ± 20%
Application
IF Signal Detection
( ) Typical value
450 C
SERIES
CENTER FREQUENCY
in kHz
TYPE
̆Applicable in North American market only. ̄Applicable in European market only.
For more detailed information regarding this product line in North America, see Catalog No. P-05-D. To receive additional information on Murata Products call 1-800 -831-9172.
For more detailed information regarding this product line in Europe, see Catalog No. P10E-2.
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