BLFCM450B [TOKO]
Ceramic BPF, 0.45MHz, LEAD FREE PACKAGE-4;型号: | BLFCM450B |
厂家: | TOKO, INC |
描述: | Ceramic BPF, 0.45MHz, LEAD FREE PACKAGE-4 |
文件: | 总2页 (文件大小:178K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
LFC/LFCM
AM CERAMIC FILTERS
Description
Dimensions
• 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
LFC
Unit: mm
Applications
• AM radio cassettes, AM stereo sets
• Cordless telephones, pagers
• Two-way radios
LFCM
Unit: mm
STANDARD FILTERS SELECTION GUIDE
TYPE LFC/LFCM
TOKO
Part
Number
Center *
Frequency
(kHz)
Bandwidth
at 6 dB
(kHz)
Bandwidth
at 40 dB
(kHz)
Attenuation
fo ± 100 KHz
(dB)
Insertion
Loss
(dB)
Input/Output
Impedance
(kΩ)
LFC
ALFC455H
ALFC455G
ALFC455F
ALFC455E
BLFC455D
BLFC455C
BLFC455B
LFCM
455±1.0
455±1.0
455±1.0
455±1.0
455±2.0
455±2.0
455±2.0
±3.0 min.
±4.5 min.
±6.0 min.
±7.5 min.
±10.0 min.
±12.5 min.
±15.0 min.
±9.0 min.
±10.0 min.
±12.5 min.
±15.0 min.
±20.0 min.
±24.0 min.
±30.0 min.
25.0 max.
25.0 max.
27.0 max.
27.0 max.
27.0 max.
27.0 max.
27.0 max.
6.0 max.
6.0 max.
6.0 max.
6.0 max.
4.0 max.
4.0 max.
4.0 max.
2.0
2.0
2.0
1.5
1.5
1.5
1.5
ALFCM455H
ALFCM455G
ALFCM455F
ALFCM455E
BLFCM455D
BLFCM455C
BLFCM455B
455±1.0
455±1.0
455±1.0
455±1.0
455±2.0
455±2.0
455±2.0
±3.0 min.
±4.5 min.
±6.0 min.
±7.5 min.
±10.0 min.
±12.5 min.
±15.0 min.
±9.0 min.
±10.0 min.
±12.5 min.
±15.0 min.
±20.0 min.
±24.0 min.
±30.0 min.
25.0 max
25.0 max
27.0 max
27.0 max
27.0 max
27.0 max
27.0 max
6.0 max.
6.0 max.
6.0 max.
6.0 max.
4.0 max.
4.0 max.
4.0 max.
2.0
2.0
2.0
1.5
1.5
1.5
1.5
* For 450kHz, substitute 450 for 455 in part number.
August 2005
1
CF-317-LFC/M
R-LOG0805A
© 2005 TOKO America, Inc.
All Rights Reserved
Printed in USA
LFC/LFCM
AM CERAMIC FILTERS
Frequency Response
LFC / LFCM (4 element)
0
20
40
60
80
H
E
C
Bandwidth
Rank:
100
C = ±12.5kHz
E = ±7.5kHz
H = ±3kHz
415 425 435
455 465 475 485 495
445
Frequency (kHz)
Test Circuit
R1
LFC
Test circuit
3
Test Conditions
50Ω
SG.
Rg
2
1
E.V.
R2
E2
1. C includes test circuit capacitance.
2. R1, R2: Input-output impedance
Cs: Stray capacitance
E1
(less than 50pF, including EV)
Z = Rg + R1 =R2
1
2
LFCM
R1
Test circuit
50Ω
Rg
3
4
E.V.
R2
E2
E1
SG.
Z = Rg + R1 =R2
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.
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.
All Rights Reserved
Printed in USA
2
CF-317-LFC/M
R-LOG0805A
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