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EMI/EMC Filter Selection flow chart

If you are having trouble selecting a noise filter, please use the flowchart below.

flowchart base Ripple noise ATT for SMPS Conduction noise ATT 1-stage filter General purpose
(1-stage/2-stage filter) 1-stage filter
(Book type) 1-stage filter General purpose
(1-stage filter) General purpose
(2-stage filter) 2-stage filter
(Book type) 2-stage/multi-stage filter Medical equipment
(1-stage filter) Medical equipment
(2-stage filter)

*can also be used as single-phase input

EMI/EMC Filter Selection Guide and flow chart
Click here to see options for enhancing functionality and noise suppression performance. Click here to see examples of methods to enhance low-frequency noise suppression performance.

Book Type (1 Stage Filter)

  • FTA Series

    • Recommended products
    • UL1283

    EMI/EMC filter designed to suppress conducted terminal noise voltage in equipment using servo motors or inverters.
    General-purpose type with an attenuation range from 150 kHz to 1 MHz.

    Rated Current
    40A 50A 60A 80A 100A 125A 150A
    Option

    -H、-U、-G、-S（80-150A）

    Applications
    Suitable for equipment incorporating inverters or servo motors, such as robots, welding machines, elevators, and medical devices.

Option Description

Book Type (2 Stage Filter)

  • For standard motor cable length (approx. ≤ 10 m)

    FTB Series (2 Stage Filter)

    • Recommended products
    • UL1283

    EMI/EMC filter designed to suppress conducted terminal noise voltage in equipment using servo motors or inverters.
    General-purpose type with an attenuation range from 150 kHz to 1 MHz.

    Rated Current
    80A 100A 150A
    Option

    -H、-L、-S

    Applications
    Suitable for equipment incorporating inverters or servo motors, such as robots, welding machines, elevators, and medical devices.

  • For long motor cable length (approx. > 10 m)

    FSB Series (2 Stage Filter)

    • Recommended products
    • UL1283

    Designed for motor drive systems
    Improve saturation resistance

    Rated Current
    10A 20A 30A 40A 50A 60A 80A 100A 150A
    Option

    -H、-U、-HU、-S（80-150A）

    Applications
    Suitable for equipment incorporating inverters or servo motors, such as robots, welding machines, elevators, and medical devices.

Option Description

Low profile Type (1 Stage Filter)

  • Low frequency band

    TAC Series (1 Stage Filter)

    • Recommended products
    • UL1283

    EMI/EMC filter of suppressing conducted terminal noise voltage in equipment incorporating servo motors and inverters
    General purpose type from 150 kHz to 1 MHz

    Rated Current
    4A 6A 10A 20A 30A 50A 60A 80A 100A 150A 200A 250A 300A
    Option

    -D（4-30A）、-U（50-300A）

    Applications
    Equipment incorporating inverters or servo motors, such as robots, welding machines, elevators, and medical equipment.

  • Ultra-low frequency band

    TAH Series (1 Stage Filter)

    • Recommended products
    • UL1283

    EMI/EMC filter of suppressing conducted terminal noise voltage in equipment incorporating servo motors and inverters
    General purpose type from 9 kHz to 1 MHz

    Rated Current
    4A 6A 10A 20A 30A 50A 60A 80A 100A 150A
    Option

    -D（4-30A）、-U（50-300A）

    Applications
    Equipment incorporating inverters or servo motors, such as robots, welding machines, elevators, and medical equipment.

  • Compact type

    JAC Series (1 Stage Filter)

    • Recommended products
    • UL1283

    EMI/EMC filter of suppressing conducted terminal noise voltage in equipment incorporating servo motors and inverters
    General purpose type from 150 kHz to 1 MHz

    Rated Current
    6A 10A 20A 30A 40A 50A 60A
    Option

    -D(6-30A)、-H、-U

    Applications
    Equipment incorporating inverters or servo motors, such as robots, welding machines, elevators, and medical equipment.

Option Description

Low profile Type (2 Stage Filter / Multiple Stage filter)

  • Rated current < 400A

    TBC Series (2 Stage Filter)

    • Recommended products
    • UL1283

    EMI/EMC filter of suppressing conducted noise in equipment incorporating servo motors and inverters
    High-attenuation type from 150 kHz to 1 MHz

    Rated Current
    50A 60A 80A 100A 150A 200A 250A 300A
    Option

    -

    Applications
    Equipment incorporating inverters or servo motors, such as robots, welding machines, elevators, and medical equipment.

  • Rated current ≧ 400A

    TSC Series (2 Stage Filter)

    • Recommended products
    • UL1283

    EMI/EMC filter of suppressing conducted noise in equipment incorporating servo motors and inverters
    High-attenuation type from 150 kHz to 1 MHz

    Rated Current
    400A 600A
    Option

    -H

    Applications
    For photovoltaic (PV) power generation systems (grid side) and manufacturing equipment

  • Rated current ≧ 400A

    TSD Series (2 Stage Filter)

    • New Product
    • Recommended products
    • UL60939

    Designed for motor drive systems High-attenuation and improve saturation resistance type

    Rated Current
    400A 600A 800A 1000A
    Option

    -

    Applications
    Industrial equipment and manufacturing machinery with regenerative power converters

Option Description

1 Stage Filter(General purpose)

  • Low frequency band

    NAC Series (1 Stage Filter)

    • New Product
    • Recommended products
    • UL1283

    EMI/EMC filter of conducted noise
    General purpose type from 150 kHz to 1 MHz
    *Including 4,000VAC withstand voltage model (Medical equipment)

    Rated Current
    4A 6A 10A 16A 20A 30A 40A 50A 60A
    Option

    -D(4-30A)、-F(40-60A)

    Applications
    Use with multiple switching power supplies, single-phase inverters, etc.

  • Ultra-low frequency band

    NAH Series (1 Stage Filter)

    • New Product
    • Recommended products
    • UL1283

    EMI/EMC filter of conducted noise
    General purpose type from 9 kHz to 1 MHz
    *Including 4,000VAC withstand voltage model (Medical equipment)

    Rated Current
    6A 10A 16A 20A 30A 40A 50A 60A
    Option

    -D(6-30A)、-F(40-60A)

    Applications
    Systems using multiple switching power supplies; robots and medical equipment incorporating single-phase inverters or servo motors, etc.

  • Compact screw type

    EAC Series (1 Stage Filter)

    • UL1283

    EMI/EMC filter of conducted noise
    Compact general purpose type from 150 kHz to 1 MHz

    Rated Current
    3A 6A 10A 16A 20A 30A
    Option

    -D

    Applications
    Use with multiple switching power supplies, single-phase inverters, etc.

  • Compact screwless type

    ESC Series (1 Stage Filter)

    • UL1283

    EMI/EMC filter of conducted noise
    General purpose of compact screwless type from 150 kHz to 1 MHz

    Rated Current
    3A 6A 10A 16A
    Option

    -D

    Applications
    Use with multiple switching power supplies, single-phase inverters, etc.

Option Description

1 Stage Filter(Medical equipment)

  • Low frequency band

    NAM Series (1 Stage Filter)

    • New Product
    • Recommended products
    • UL1283

    EMI/EMC filter of conducted noise for medical applications
    General purpose low leakage current type from 150 kHz to 1 MHz
    *Including 4,000VAC withstand voltage model

    Rated Current
    4A 6A 10A 16A 20A 30A 40A 50A 60A
    Option

    -D(4-30A)

    Applications
    Use with multiple switching power supplies, endoscope, medical equipment, etc.

  • Ultra-low frequency band

    NAH Series (1 Stage Filter)

    • New Product
    • Recommended products
    • UL1283

    EMI/EMC filter of conducted noise
    General purpose low leakage current type from 9 kHz to 1 MHz
    *Including 4,000VAC withstand voltage model (Medical equipment)

    Rated Current
    6A 10A 16A 20A 30A 40A 50A 60A
    Option

    -D(6-30A)、-F(40-60A)

    Applications
    Systems using multiple switching power supplies; robots and medical equipment incorporating single-phase inverters or servo motors, etc.

  • Compact screw type

    EAM Series (1 Stage Filter)

    • UL1283

    EMI/EMC filter of conducted noise for medical applications
    Compact general purpose low leakage current type from 150 kHz to 1 MHz

    Rated Current
    3A 6A 10A 16A 20A 30A
    Option

    -D

    Applications
    Use with multiple switching power supplies, endoscope, medical equipment, etc.

  • Compact screwless type

    ESM Series (1 Stage Filter)

    • UL1283

    EMI/EMC filter of conducted noise for medical applications
    Compact general purpose low leakage current screwless type from 150 kHz to 1 MHz

    Rated Current
    3A 6A 10A 16A
    Option

    -D

    Applications
    Use with multiple switching power supplies, endoscope, medical equipment, etc.

Option Description

2 Stage Filter(General purpose)

  • Low frequency band

    NBC Series (2 Stage Filter)

    • UL1283

    EMI/EMC filter of conducted noise
    High-attenuation type from 150 kHz to 1 MHz

    Rated Current
    6A 10A 16A 20A 30A
    Option

    -D

    Applications
    Use with multiple switching power supplies, single-phase inverters, etc.

  • For broadband

    NBH Series (2 Stage Filter)

    • UL1283

    EMI/EMC filter of conducted noise
    High-attenuation type from 9 kHz to 10 MHz
    *Including 4,000VAC withstand voltage model (Medical equipment)

    Rated Current
    6A 10A 16A 20A 30A
    Option

    -D

    Applications
    Systems using multiple switching power supplies; robots and medical equipment incorporating single-phase inverters or servo motors, etc.

Option Description

2 Stage Filter(Medical equipment)

  • Low frequency band

    NBM Series (2 Stage Filter)

    • UL1283

    EMI/EMC filter of conducted noise for medical applications
    High-attenuation low leakage current type from 150 kHz to 1 MHz, 4,000VAC withstand voltage model

    Rated Current
    6A 10A 16A 20A 30A
    Option

    -D

    Applications
    Use with multiple switching power supplies, endoscope, medical equipment, etc.

  • For broadband

    NBH Series (2 Stage Filter)

    • UL1283

    EMI/EMC filter of conducted noise
    High-attenuation type from 9 kHz to 10 MHz
    *Including 4,000VAC withstand voltage model (Medical equipment)

    Rated Current
    6A 10A 16A 20A 30A
    Option

    -D

    Applications
    Systems using multiple switching power supplies; robots and medical equipment incorporating single-phase inverters or servo motors, etc.

Option Description

1 stage/2 stage Filter (General purpose)

  • YAC Series (2 Stage Filter)

    • New Product
    • Recommended products

    For EU market, Three-phase four-wire system EMI/EMC filter ideal for large printing machines and Energy storage systems

    Rated Current
    25A 36A 64A 80A 120A 160A 200A 300A
    Option

    -

    Applications
    Large printing machines, UPS systems, renewable energy systems, lighting and building facilities, medical equipment, etc.

Conduction noise ATT (1 Stage Filter)

  • General purpose type

    NAP Series (1 Stage Filter)

    • New Product
    • Recommended products
    • UL1283

    EMI filter to suppress external noise and prevent equipment malfunction
    High-attenuation type for external impulse noise
    *Including 4,000VAC withstand voltage model (Medical equipment)

    Rated Current
    4A 6A 10A 16A 20A 30A 40A 50A 60A
    Option

    -D(4-30A)、-F(40-60A)

    Applications
    PLC, industrial equipment with computers, etc.

  • Compact screw type

    EAP Series (1 Stage Filter)

    • UL1283

    EMI filter to suppress external noise and prevent equipment malfunction
    Compact type for external impulse noise

    Rated Current
    3A 6A 10A 16A 20A 30A
    Option

    -D

    Applications
    PLC, industrial equipment with computers, etc.

  • Compact screwless type

    ESP Series (1 Stage Filter)

    • UL1283

    EMI filter to suppress external noise and prevent equipment malfunction
    Compact screwless type for external impulse noise

    Rated Current
    3A 6A 10A 16A
    Option

    -D

    Applications
    PLC, industrial equipment with computers, etc.

Option Description

Ripple noise ATT for SMPS

  • For switch mode power supplies

    SNA Series (1 Stage Filter)

    • UL60950-1

    Ripple noise attenuation type for DC lines
    (DC±50V)

    Rated Current
    1A 3A 6A
    Option

    -D、-T（6A）、-DT（6A）

    Applications
    For DC power line of analog circuit (dual output)

  • For switch mode power supplies (Peak load)

    SNR Series (1 Stage Filter)

    • UL60950-1

    Ripple noise attenuation type for DC lines
    (DC±50V)

    Rated Current
    10A
    Option

    -D、-T、-DT

    Applications
    For DC power line of analog circuit (single output)

Option Description

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