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EMI/RFI Filters: T Type Filters

  • T Type Filters

    SeriesVoltageT° RangeCurrentFrequencyNotes

    F*M

    50Vdc to 500Vdc (115Vac 400Hz complience)

    +125°Cup to 10A (25A on demand)

    Multiways

    FCMS

    50Vdc to 500Vdc (115Vac 400Hz complience)

    +125°Cup to 10A (25A on demand)

    Surface Mount

    FT

    50Vdc to 500Vdc (115Vac 400Hz complience)

    +125°Cup to 10A (25A on demand)

    T Circuits DC/AC(400Hz)

    T Circuits AC

    125VAC to 230VAC

    +125°C0.06A to 10A

    T

    T Circuits DC

    50VDC to 300VDC

    +125°C0.06A to 15A

    T

A three-section filter consisting of two series-connected inductors between the input and output terminals, with a feedthrough capacitor between them from line to ground. The T filter is usually symmetrical (identical inductive elements), but circumstances sometimes warrant use of asymmetrical circuits. A T filter has attenuation characteristics that increase at 60 dB from its cutoff frequency to at least that frequency where it exhibits a minimum attenuation of 60 dB. The schematic symbol and typical attenuation characteristics are shown below: T-Only Filters are the choice when both the input and output impedances are low.