LFY 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
LFY
LFY/LFYM
AM CERAMIC FILTERS
Unit: mm
LFYM
Unit: mm
STANDARD FILTERS SELECTION GUIDE
TYPE LFY/LFYM
TOKO
Part
Number
LFY
ALFY455H
ALFY455G
ALFY455F
ALFY455E
BLFY455D
BLFY455C
BLFY455B
LFYM
ALFYM455H
ALFYM455G
ALFYM455F
ALFYM455E
BLFYM455D
BLFYM455C
BLFYM455B
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 50 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)
35.0 max.
35.0 max.
35.0 max.
35.0 max.
35.0 max.
35.0 max.
35.0 max.
35.0 max
35.0 max
35.0 max
35.0 max
35.0 max
35.0 max
35.0 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-318-LFY/M
R-LOG0805A
Printed in USA