
CFA
AM CERAMIC FILTERS
August 2005
 2005 TOKO America, Inc.
All Rights Reserved  
Printed in USA
1
CF-312-CFA
R-LOG0805A
Dimensions 
TOKO America, Inc. 
1250 Feehanville Drive,  Mount Prospect, Illinois  60056
Tel: (847) 297-0070   Fax: (847) 699-7864   Web: http://
www.tokoam.com
The information furnished by TOKO, Inc. is believed to be accurate and reliable.  However, TOKO reserves the right to make changes or improvements in the design, specification or manufacture 
of its products without further notice. TOKO does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or 
other rights of third parties which may result from the use of its products.  No license is granted by implication or otherwise under any patent or patent rights of TOKO, Inc.
Description
 Unique structure single element AM IF filter
 Center frequency range: 450 — 470kHz
 Bandwidth at 6dB: 13±3kHz 
Features
 Compact, low profile
 High selectivity, suited to a wide range of applications 
 Low temperature coefficient
 Low spurious response 
 Lead-free terminations 
Applications
 AM radio-cassettes
 Wireless data communication equipment   
Typical Characteristics 
Frequency Response
ACFA-450
STANDARD FILTERS SELECTION GUIDE 
TYPE CFA (CERATUNE
)
TOKO                    Center            Bandwidth         Selectivity              Ripple            Insertion       Input/Output
           Part                 Frequency             at 6dB            at Fo±9kHz        in Pass Band           Loss             Impedance
           Number                   (kHz)                   (kHz)                   (dB)
         (dB)                  (dB)                   (k
Ω
)
     #ACFA-450              450±1.1                13±3.0                6.0 min.                  0                    5.0 max.           3.0/3.0
     #BCFA-450              450±2.1                13±3.0                6.0 min.                  0                    5.0 max.           3.0/3.0
        #ACFA-455              455±1.1                13±3.0                6.0 min.                  0                    5.0 max.           3.0/3.0
     #BCFA-455              455±2.1                13±3.0                6.0 min.                  0                    5.0 max.           3.0/3.0
     #ACFA-459              459±1.1                13±3.0                6.0 min.                  0                    5.0 max.           3.0/3.0
     #BCFA-459              459±2.1                13±3.0                6.0 min.                  0                    5.0 max.           3.0/3.0
     #ACFA-468              468±1.1                13±3.0                6.0 min.                  0                    5.0 max.           3.0/3.0
     #BCFA-468              468±2.1                13±3.0                6.0 min.                  0                    5.0 max.           3.0/3.0
 #AFCFA-450L02         450.2±1.1             5.0 min.               10.0 min.                 0                    4.0 max.           3.0/3.0
 #AFCFA-455L02         455.2±1.1             5.0 min.               10.0 min.                 0                    4.0 max.           3.0/3.0
 #AFCFA-459L02         459.2±1.1             5.0 min.               10.0 min.                 0                    4.0 max.           3.0/3.0
Test Circuit 
Unit: mm
Frequency characteristics
AFCFA-450L02