Custom EMI Filter Solutions | Design & Manufacturing Services
DOREXS provides custom power line, DC, and three-phase EMI filters designed to meet EMC compliance requirements for industrial, medical, and telecom equipment.
Looking for a reliable custom EMI filter manufacturer? We provide high-performance, application-specific EMI/EMC filtering solutions designed to meet your exact electrical and mechanical requirements.
Whether for industrial systems, medical equipment, power electronics, or defense applications, our engineering team delivers optimized EMI filter designs with fast turnaround and global compliance.
Why Standard EMI Filters Are Not Always Sufficient？
Insufficient Noise Attenuation
Every electronic system generates a unique noise spectrum. Standard filters may fail to provide adequate attenuation at the specific frequencies where interference actually occurs.
Current and Voltage Limitations
High-power equipment—such as industrial machinery or telecommunications power supply systems—may require filters with higher current ratings than those offered by standard products.
Mechanical Constraints
Certain systems demand compact designs or specialized mounting methods—mechanical requirements that standard filters are often unable to meet.
EMC Compliance Requirements
Products sold globally must adhere to strict Electromagnetic Compatibility (EMC) standards, such as: FCC, CE, CISPR, and MIL-STD.
Types of Custom EMI Filters
Custom EMI filters can be designed for many different electrical architectures and applications, supporting a wide range of power quality solutions across industries.
Custom Single-Phase EMI Filters
Single-phase filters are commonly used in: consumer electronics, medical equipment, and industrial controllers. Their design aims to suppress both common-mode and differential-mode noise present on AC power lines.
Custom Three-Phase EMI Filters
Three-phase EMI filters are frequently utilized in high-power equipment such as: motor drives, industrial automation systems, and renewable energy inverters. These filters must be capable of handling high currents and often require robust thermal and mechanical designs, similar to high-performance AC EMI filter solutions.
Custom DC EMI Filters
DC EMI filters are typically employed in: telecommunications power systems, battery-powered devices, and data center infrastructure. These filters help suppress switching noise generated by DC-DC converters and power modules.
Feedthrough EMI Filters
Feed-through filters are an ideal choice for applications requiring extremely high attenuation in the high-frequency range. They are commonly used in: military systems, medical equipment, and shielded enclosures.
Key Parameters in Custom EMI Filter Design
Designing a custom EMI filter requires careful analysis of several technical parameters.
✔ Rated Voltage
✔ Rated Current
✔ Insertion Loss
✔ Leakage Current
✔ Frequency Range
Custom EMI Filter Design Process
Professional manufacturers follow a systematic design process when developing a custom EMI filter solution.
Scope of Custom EMI Filters
DOREXS possesses a proven track record of successfully customizing EMI solutions for a wide range of industries.
Custom EMI Filter Solutions from DOREXS
As a professional EMI filter manufacturer, DOREXS provides comprehensive custom EMI filter design and manufacturing services for a wide range of industries. Our capabilities include: Custom AC power line EMI filters Custom DC EMI filters Three-phase EMI filter solutions Feedthrough filters for high-performance applications Engineering support for EMC compliance With extensive experience in electromagnetic compatibility design, our engineering team works closely with customers to develop optimized EMI filter solutions for their specific applications.
Request a Custom EMI Filter
If your equipment requires a specialized EMI filtering solution, a custom design may be the most effective approach.
By analyzing your system’s electrical parameters and EMI characteristics, engineers can develop a filter that provides optimal performance while ensuring compliance with international EMC standards.
Contact DOREXS today to discuss your custom EMI filter requirements and receive expert engineering support.