LFC Datasheet, PDF (1/2 Pages) TOKO, Inc – AM CERAMIC FILTERS

Description
• AM Ceramic filters are connected in a ladder structure
and are available as either 4/6 element devices
• Bandwidths from 6 to 30 kHz
Features
• 450, 455 kHz, (460kHz and 486kHz by special request)
• High selectivity
• Compact package
• Version with group delay variations specified also available
• Lead-free terminations
Applications
• AM radio cassettes, AM stereo sets
• Cordless telephones, pagers
• Two-way radios
Dimensions
LFC
LFC/LFCM
AM CERAMIC FILTERS
Unit: mm
LFCM
Unit: mm
STANDARD FILTERS SELECTION GUIDE
TYPE LFC/LFCM
TOKO
Part
Number
LFC
ALFC455H
ALFC455G
ALFC455F
ALFC455E
BLFC455D
BLFC455C
BLFC455B
LFCM
ALFCM455H
ALFCM455G
ALFCM455F
ALFCM455E
BLFCM455D
BLFCM455C
BLFCM455B
Center *
Frequency
(kHz)
455±1.0
455±1.0
455±1.0
455±1.0
455±2.0
455±2.0
455±2.0
455±1.0
455±1.0
455±1.0
455±1.0
455±2.0
455±2.0
455±2.0
Bandwidth
at 6 dB
(kHz)
±3.0 min.
±4.5 min.
±6.0 min.
±7.5 min.
±10.0 min.
±12.5 min.
±15.0 min.
±3.0 min.
±4.5 min.
±6.0 min.
±7.5 min.
±10.0 min.
±12.5 min.
±15.0 min.
* For 450kHz, substitute 450 for 455 in part number.
Bandwidth
at 40 dB
(kHz)
±9.0 min.
±10.0 min.
±12.5 min.
±15.0 min.
±20.0 min.
±24.0 min.
±30.0 min.
±9.0 min.
±10.0 min.
±12.5 min.
±15.0 min.
±20.0 min.
±24.0 min.
±30.0 min.
Attenuation
fo ± 100 KHz
(dB)
25.0 max.
25.0 max.
27.0 max.
27.0 max.
27.0 max.
27.0 max.
27.0 max.
25.0 max
25.0 max
27.0 max
27.0 max
27.0 max
27.0 max
27.0 max
Insertion
Loss
(dB)
6.0 max.
6.0 max.
6.0 max.
6.0 max.
4.0 max.
4.0 max.
4.0 max.
6.0 max.
6.0 max.
6.0 max.
6.0 max.
4.0 max.
4.0 max.
4.0 max.
Input/Output
Impedance
(kΩ)
2.0
2.0
2.0
1.5
1.5
1.5
1.5
2.0
2.0
2.0
1.5
1.5
1.5
1.5
August 2005
1
© 2005 TOKO America, Inc.
All Rights Reserved
CF-317-LFC/M
R-LOG0805A
Printed in USA