A high quality 110KHz bandwidth Murata 2 element ceramic filter (SFELF10M7KAH0-B0) suitable for use in FM Hi-Fi tuners. Replacing the existing 150 or 180 KHz wide filters in existing equipment that has a 'narrow' setting will improve adjacent channel rejection allowing weaker radio stations on adjacent channels to be received more clearly and without splatter. SFELF10M7 series for FM-receivers are monolithic type ceramic filters that use the thickness expander mode of the piezoelectric ceramic. As part of the environment protection program, the solder for terminal plating and terminal-element connection inside of the ceramic filter contain no lead (Pb).
The marking on the filter is 10.7HY with the red dot to the right.
Features:
- These miniature filters have high mechanical strength.
- Low loss, favorable waveform symmetry, and high selectivity
- Various bandwidths are available for applications in wide to narrow bands.
- Small dispersion and stable characteristics
- Change in center frequency is typically within ±30ppm/°C at -20 to +80°C.
- High reliability
Center Frequency (fo)
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10.700MHz ±30kHz
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Nominal Center Frequency (fn)
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3dB Bandwidth
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110kHz ±30kHz
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Attenuation
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350kHz max.
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Area of Attenuation
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[within 20dB]
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Insertion Loss (at minimum loss point)
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7.0dB ±2.0dB
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Ripple (within 3dB B.W.)
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1.0dB max.
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Spurious Attenuation(1)
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30dB min.
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Area of Spurious Attenuation(1)
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[within 9MHz to fo]
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Spurious Attenuation(2)
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30dB min.
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Area of Spurious Attenuation(2)
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[within fo to 12MHz]
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GDT Bandwidth
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Area of GDT Bandwidth
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Input/Output Impedance
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330ohm |
Area of Attenuation: [within 20dB]
Area of Insertion Loss: at minimum loss point
Center frequency (fo) defined by the center of 3dB bandwidth.
For safety purposes, connect the output of filters to the IF amplifier through a D.C. blocking capacitor. Avoid applying a direct current to the output of ceramic filters.
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