Flange Mounted EMI Filters and RFI Filters
Last Updated: April 1, 2025
Description
Flange Mounted EMI Filters and RFI Filters are designed to suppress electromagnetic interference (EMI) and radio frequency interference (RFI) in electronic systems. These filters are typically mounted using a flange, which allows them to be securely attached to equipment or enclosures. Their primary function is to block unwanted noise while allowing the desired signals to pass through, ensuring the proper functioning of electronic devices.
Working Principle
Flange Mounted EMI and RFI Filters operate as low-pass filters, which means they allow low-frequency signals to pass while attenuating higher frequency noise. This is achieved through a combination of inductors and capacitors that work together to block or shunt unwanted interference to the ground. The effectiveness of these filters is measured by their insertion loss or attenuation, which indicates how well they reduce the amplitude of unwanted signals. By preventing EMI and RFI from entering or exiting equipment, these filters help maintain signal integrity and compliance with electromagnetic compatibility (EMC) standards.
Applications
Flange Mounted EMI and RFI Filters are used in a variety of applications where electromagnetic interference needs to be controlled. Specific examples include:
- Switch Mode Power Supplies: These filters help in reducing noise generated by high-frequency switching.
- Monitors and Displays: They ensure clear signal transmission by minimizing interference.
- Programmable Logic Controllers (PLCs): Filters maintain the accuracy and reliability of control signals.
- Microwave Equipment: They prevent interference that could affect the performance of microwave systems.
- Office Automation Equipment: Filters are used to ensure smooth operation of devices like printers and copiers.
Advantages over other EMI Filters and RFI Filters
Flange Mounted EMI and RFI Filters offer several advantages over other types of filters. Their flange mounting design provides a secure and stable installation, which is particularly beneficial in environments with high vibration or movement. Additionally, they can be customized to meet specific requirements, offering flexibility in design and application.
Limitations
One limitation of Flange Mounted EMI and RFI Filters is that they may require more space compared to other mounting options, such as board-mounted filters. This can be a consideration in compact or densely packed electronic systems. Additionally, the flange mounting process may involve more complex installation procedures, potentially increasing initial setup time.
Considerations
When selecting Flange Mounted EMI and RFI Filters, several factors should be considered:
- Initial Costs: The cost of these filters can vary based on customization and specifications. It's important to balance cost with performance requirements.
- Operating Expense: While these filters generally have low operating costs, the initial investment should be justified by the long-term benefits of reduced interference.
- Durability: Flange Mounted Filters are typically robust, but their durability can be affected by environmental factors such as temperature and humidity.
- Replacement and Maintenance Costs: These filters are generally low-maintenance, but regular inspections are recommended to ensure continued performance. Replacement costs should be considered in the context of the filter's lifespan and the criticality of the application.
from TE Connectivity
Configuration Features. Wiring Configuration : WYE (4 wire + ground). Electrical Characteristics. 3-Phase Filter Current Rating (AMP) : 8. 3-Phase Filter Voltage (Max) (VAC) : 520. Mechanical Attachment. Mount Style : Flanged. Other. Comment : 3-Phase... [See More]
- Package / Mounting: Flange
- Operating Temperature: -10 to 50
- Filter Type: Three Phase
- Standards and Certifications: RoHS
from RS Components, Ltd.
5120 IEC Filter, 250VAC, 1A [See More]
- Package / Mounting: Flange; Flange Mount, Screw Mount
- Rated Voltage: 250
- Filter Type: Single Phase
- Rated Current: 1
from TE Connectivity
Configuration Features. Wiring Configuration : WYE (4 wire + ground). Electrical Characteristics. 3-Phase Filter Current Rating (AMP) : 16. 3-Phase Filter Voltage (Max) (VAC) : 520. Mechanical Attachment. Mount Style : Flanged. Other. Comment : 3-Phase... [See More]
- Package / Mounting: Flange
- Operating Temperature: -10 to 50
- Filter Type: Three Phase
- Standards and Certifications: RoHS
from RS Components, Ltd.
5120 IEC Filter, 250VAC, 4A [See More]
- Package / Mounting: Flange; Flange Mount, Screw Mount
- Rated Voltage: 250
- Filter Type: Single Phase
- Rated Current: 4
from TE Connectivity
Configuration Features. Wiring Configuration : WYE (4 wire + ground). Electrical Characteristics. 3-Phase Filter Current Rating (AMP) : 25. 3-Phase Filter Voltage (Max) (VAC) : 520. Mechanical Attachment. Mount Style : Flanged. Other. Comment : 3-Phase... [See More]
- Package / Mounting: Flange
- Operating Temperature: -10 to 50
- Filter Type: Three Phase
- Standards and Certifications: RoHS
from RS Components, Ltd.
5120 IEC Filter, 250VAC, 10A [See More]
- Package / Mounting: Flange; Flange Mount, Screw Mount
- Rated Voltage: 250
- Filter Type: Single Phase
- Rated Current: 10
from TE Connectivity
Configuration Features. Wiring Configuration : WYE (4 wire + ground). Electrical Characteristics. 3-Phase Filter Current Rating (AMP) : 36. 3-Phase Filter Voltage (Max) (VAC) : 520. Mechanical Attachment. Mount Style : Flanged. Other. Comment : 3-Phase... [See More]
- Package / Mounting: Flange
- Operating Temperature: -10 to 50
- Filter Type: Three Phase
- Standards and Certifications: RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : WYE (4 wire + ground). Electrical Characteristics. 3-Phase Filter Current Rating (AMP) : 64. 3-Phase Filter Voltage (Max) (VAC) : 520. Mechanical Attachment. Mount Style : Flanged. Other. Comment : 3-Phase... [See More]
- Package / Mounting: Flange
- Operating Temperature: -10 to 50
- Filter Type: Three Phase
- Standards and Certifications: RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : WYE (4 wire + ground). Electrical Characteristics. 3-Phase Filter Current Rating (AMP) : 80. 3-Phase Filter Voltage (Max) (VAC) : 520. Mechanical Attachment. Mount Style : Flanged. Other. Comment : 3-Phase... [See More]
- Package / Mounting: Flange
- Operating Temperature: -10 to 50
- Filter Type: Three Phase
- Standards and Certifications: RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : WYE (4 wire + ground). Electrical Characteristics. 3-Phase Filter Current Rating (AMP) : 160. 3-Phase Filter Voltage (Max) (VAC) : 520. Mechanical Attachment. Mount Style : Flanged. Other. Comment : 3-Phase... [See More]
- Package / Mounting: Flange
- Operating Temperature: -10 to 50
- Filter Type: Three Phase
- Standards and Certifications: RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : WYE (4 wire + ground). Electrical Characteristics. 3-Phase Filter Current Rating (AMP) : 200. 3-Phase Filter Voltage (Max) (VAC) : 520. Mechanical Attachment. Mount Style : Flanged. Other. Comment : 3-Phase... [See More]
- Package / Mounting: Flange
- Operating Temperature: -10 to 50
- Filter Type: Three Phase
- Standards and Certifications: RoHS
from TE Connectivity
Electrical Characteristics. Current Rating (AMP) : 3. Voltage (Max) (VDC) : 80. Mechanical Attachment. Mount Style : Flanged. Other. Comment : Use with accessory GA210, mating connector 36", 18 AWG. Product Type Features. Filter Type : DC. Filtered :... [See More]
- Package / Mounting: Flange
- Rated Voltage: 80
- Filter Type: DC
- Rated Current: 3
from TE Connectivity
Body Features. Shield Style : Filter Shield. Configuration Features. Fuse Options : Dual. Voltage Selection : 4-Voltage. Electrical Characteristics. Current Rating (AMP) : 4. Input Voltage Select : Quad AC. Leakage Current (Max) (120VAC, 60Hz) (MICA) :... [See More]
- Package / Mounting: Flange
- Rated Voltage: 100 to 240
- Filter Type: Multi-Function Inlet Filters
- Rated Current: 4
from Schaffner EMC Inc.
Industry standard EMC solution for three-phase PDS filtering. Slim space-saving book-style housing. Solid safety connector blocks or optional wire output connections. Excellent attenuation performance. HV versions for up to 690 VAC. HVIT versions for IT distribution networks. P/L versions with low... [See More]
- Package / Mounting: Flange
- Rated Voltage: 277 to 690
- Filter Type: Three Phase
- Rated Current: 7 to 250
from Carlisle Interconnect Technologies
The D-sub and Micro-d connectors are designed with machined shells for harsh environments and all the standard filtering circuits seen in the circular filter connectors. The d-subs come in standard and hi-density arrangements up to 104 pins and the micro-d's can be wired as required. CarlisleIT... [See More]
- Package / Mounting: Flange
- Product Standards: EIA
from Abbott Technologies, Inc.
Single and multi phase AC and DC models. mA to 1000A current. Differential and Common-mode attenuation. I st through 5th Order (20-100 dB/Decade). Special Impedances and Response Curves. Controlled leakage current. High Isolation Voltage. Low Insertion Loss. Built-in Ground Bonding. Enhanced... [See More]
- Package / Mounting: Stand Alone; Flange
- Rated Current: 1000
- Filter Type: Single Phase (optional feature); Three Phase (optional feature); DC (optional feature)
- Product Standards: Military Specifications
from Schaffner EMC Inc.
Very compact and light weight design requiring minimum space. Easy, time-saving installation and contacting. Protective covers as optional accessory available. Attenuation performance according to EN 61800-3/A11. Leakage current : 26.4 to 59.5 mA. Motor power : 5.5 to 560 kW. Operating frequency : 0... [See More]
- Package / Mounting: Flange
- Rated Voltage: 300 to 520
- Filter Type: Three Phase
- Rated Current: 10 to 1000
from Schaffner EMC Inc.
Compact filter solution for single-phase motor drive applications. Industrial grade safety terminal blocks. Designed to meet EN 55011/14/22. Compliant with IEC 60950. Leakage current : 4.9 to 11 mA. Operating frequency : 0 to 400 Hz. Performance : standard, high [See More]
- Package / Mounting: Flange
- Rated Voltage: 250
- Filter Type: Single Phase
- Rated Current: 8 to 55
from Schaffner EMC Inc.
Reduces conducted emissions towards the solar panel. Reduces the probability of EMI radiation off the solar panel. Helps to prevent premature panel aging. Helps to meet international EMC regulations. Most compact standard solution in the industry. FN 2210 without Cy capacitors to ground. Climatic... [See More]
- Package / Mounting: Flange
- Rated Voltage: 1000
- Filter Type: DC
- Rated Current: 260 to 2300
from Schaffner EMC Inc.
Compact, space-saving design, optimized for industrial machinery. Combines high attenuation performance with low leakage current. Performance according to the machine tool standard EN 50370-1. Increases also the immunity if operated directly on the mains input. Leakage current : 3.4 to 6.8 mA. [See More]
- Package / Mounting: Flange
- Rated Voltage: 300 to 520
- Filter Type: Three Phase
- Rated Current: 8 to 160
from Schaffner EMC Inc.
High current 3-phase filter up to 2300A. Extremly compact and light weight design. Minimum installation foot print. Performance optimised for standard purpose applications. FN 3310 series without Cy capacitors to ground. Climatic category : 40/100/21 acc. to IEC60068-1. Terminals/Housing : Ni plated... [See More]
- Package / Mounting: Flange
- Rated Voltage: 300 to 520
- Filter Type: Three Phase
- Rated Current: 250 to 2300
from Schaffner EMC Inc.
Compact four-wire filter for applications with limited space. High attenuation performance up to 300 MHz. Equally suitable for star and delta power networks. Leakage current : 175 to 0.5 mA. Operating frequency : 0 to 60 Hz. Performance : high. Rated Current : 4 to 25 A. Voltage : ≤ 440 V [See More]
- Package / Mounting: Flange
- Rated Voltage: 250 to 440
- Filter Type: Three Phase
- Rated Current: 4 to 25
from Schaffner EMC Inc.
Reduces conducted emissions towards the solar panel. Reduces the probability of EMI radiation off the solar panel. Helps to prevent pre-mature panel aging because of HF leakage currents. Helps to meet international EMC regulations for the entire PV system. Most compact standard solution in the... [See More]
- Package / Mounting: Flange
- Rated Voltage: 1200
- Filter Type: DC
- Rated Current: 25 to 2300
from Schaffner EMC Inc.
Exceptional broadband attenuation performance from 10 kHz up to 30 MHz. Equally suitable for conventional and regenerative motor drives (latter with additional line reactor only). Slim and user-friendly book-style design with touch-safe terminal blocks for minimum space and maximum safety. Enables... [See More]
- Package / Mounting: Flange
- Rated Voltage: 300 to 520
- Filter Type: Three Phase
- Rated Current: 35 to 300
from Schaffner EMC Inc.
Full functionality with RCDs according to IEC 61008 and new VDE 0664-110*. Compatible with 30 mA RCDs up to 30 m motor cable for electric shock protection according to IEC 61008. Compatible with 300 mA RCDs up to 100 m motor cable for fire protection according to IEC 60364-4-42 (VDE 0100-482). [See More]
- Package / Mounting: Flange
- Rated Voltage: 300 to 520
- Filter Type: Three Phase
- Rated Current: 7 to 180