custom power transformer emi shielding

Power transformers are critical components in electrical power distribution and management. They operate under high loads and generate significant electromagnetic fields (EMFs). Without proper shielding, these EMFs can interfere with nearby electronic equipment, reduce overall system efficiency, and potentially cause equipment failures or data corruption.

Electromagnetic Interference (EMI) can impact:

• Communication systems

• Industrial automation controls

• Medical equipment

• Consumer electronics

• Power electronics and inverters

At TMN Etching Factory, we understand the technical demands of EMI mitigation and deliver custom solutions designed to protect your systems from harmful interference.

Benefits of Etched EMI Shields for Power Transformers

Our use of photochemical etching provides significant advantages over traditional manufacturing techniques such as stamping, laser cutting, or CNC machining. Here’s why customers choose TMN’s etched shielding components:

1. Precision and Design Flexibility

We manufacture complex geometries, micro-perforations, and custom mesh designs with exceptional precision. This level of detail is essential for achieving effective EMI attenuation in high-frequency or sensitive environments.

2. Stress-Free Components

The chemical etching process does not involve mechanical force, so it produces components that are free of burrs, stress, and distortion—ideal for critical transformer shielding applications.

3. Material Options

We work with a variety of high-conductivity metals commonly used in EMI shielding, including:

• Copper

• Nickel silver

• Stainless steel

• Mu-metal

• Brass

Each material is selected based on the required frequency range, shielding effectiveness, and environmental factors of the application.

4. Cost-Effective Prototyping and Production

With no hard tooling required, photo etching is ideal for prototyping and low-to-medium volume production. Design changes can be made quickly and affordably without retooling.

Applications of EMI Shielding in Power Transformers

We produce custom EMI shielding components for various types of power transformers, such as:

• Distribution Transformers

• Power Supply Transformers

• Toroidal Transformers

• Instrument Transformers

• Isolation Transformers

Our etched shields help contain and direct electromagnetic energy, minimizing interference with surrounding equipment and ensuring safe, efficient operation.

Our EMI Shielding Capabilities

At TMN Etching Factory, we offer a wide range of EMI shielding components tailored to transformer applications:

EMI Shield Cans

Fully enclosed shields custom-etched for form-fit protection around transformer assemblies.

Shielding Mesh and Screens

High-precision perforated patterns that block EMI while allowing airflow and heat dissipation.

Grounding Tabs and Gaskets

Etched grounding features that support proper electrical continuity and EMI suppression.

Multi-Layer Laminated Shields

Stacked or laminated metal foils for enhanced shielding in multi-directional or high-frequency environments.

All components are produced to exact customer specifications and tested for accuracy, repeatability, and shielding effectiveness.

Industries We Serve

Our etched EMI shielding solutions are used by leading manufacturers and OEMs across a wide range of industries, including:

• Energy and Utilities

• Telecommunications

• Automotive and Electric Vehicles (EVs)

• Aerospace and Defense

• Medical Devices and Diagnostics

• Industrial Automation

• Consumer Electronics

Whether your transformer is integrated into a power grid or embedded in a sensitive medical system, our shielding components offer reliable, long-term performance.

Why Choose TMN Etching Factory?

Experience and Expertise

With years of specialization in photochemical etching, TMN Etching Factory delivers superior results on every order, from concept through production.

Engineering Support

Our technical team works closely with you to design EMI shielding that fits both functional and mechanical requirements. We assist with material selection, pattern design, and layout optimization.

Scalable Production

We can accommodate everything from small prototype runs to high-volume production, maintaining consistent quality across all quantities.

Rapid Turnaround

We offer fast turnaround on prototypes and production orders, helping you meet tight development and manufacturing timelines.

Quality Assurance

All components are manufactured under ISO 9001-compliant quality systems, ensuring repeatability, traceability, and reliability with every delivery.

Request a Quote for EMI Shielding for Power Transformers

Looking for precision-engineered EMI shields for your transformer applications? TMN Etching Factory is ready to assist. Our dedicated team provides design feedback, material recommendations, and fast quotations to help you get started quickly.

Partner with TMN Etching Factory

At TMN Etching Factory, we are more than just a parts supplier—we are your engineering partner. Our mission is to deliver highly reliable, application-specific EMI shielding solutions that enhance the performance, safety, and compliance of your power transformers.

Discover why global brands and innovators trust TMN for their most demanding shielding challenges. Contact us today to learn more about how we can support your next project.