CERAMIC FILTERS Description Ceramic filters connected ladder stru
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LFC/LFCM
CERAMIC FILTERS Description
Ceramic filters connected ladder structure available either element devices Bandwidths from
Features
450, kHz, (460kHz 486kHz special request) High selectivity Compact package Version with group delay variations specified also available Lead-free terminations
Unit:
Applications
radio cassettes, stereo sets Cordless telephones, pagers Two-way radios
LFCM
Unit:
STANDARD FILTERS SELECTION GUIDE TYPE LFC/LFCM
TOKO Part Number 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 (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. Bandwidth (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 (dB) 25.0 max. 25.0 max. 27.0 max. 27.0 max. 27.0 max. 27.0 max. 27.0 max. 25.0 25.0 27.0 27.0 27.0 27.0 27.0 Insertion Loss (dB) max. max. max. max. max. max. max. max. max. max. max. max. max. max. Input/Output Impedance
450kHz, substitute part number.
August 2005
2005 TOKO America, Inc. Rights Reserved Printed
CF-317-LFC/M R-LOG0805A
LFC/LFCM
CERAMIC FILTERS Frequency Response
LFCM element)
Attenuation (dB)
Bandwidth Rank: ±12.5kHz ±7.5kHz ±3kHz
Frequency (kHz)
Test Circuit
Test Conditions
includes test circuit capacitance. Input-output impedance Stray capacitance (less than 50pF, including Test circuit
E.V.
LFCM Test circuit
E.V.
information furnished TOKO, Inc. believed accurate reliable. However, TOKO reserves right make changes improvements design, specification manufacture products without further notice. TOKO does assume liability arising from application product circuit described herein, infringements patents other rights third parties which result from products. license granted implication otherwise under patent patent rights TOKO, Inc.
TOKO America, Inc. 1250 Feehanville Drive, Mount Prospect, Illinois 60056 Tel: (847) 297-0070 Fax: (847) 699-7864 Web: http://www.tokoam.com
August 2005
2005 TOKO America, Inc. Rights Reserved Printed
CF-317-LFC/M R-LOG0805A
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