Custom Electromagnetic Interference Shielding

Electromagnetic interference (EMI), also known as radio-frequency interference (RFI), refers to the disruption caused when electromagnetic fields from one electronic device interfere with the operation of another. EMI can come from various sources—such as mobile phones, power lines, motors, and other electronic devices—and can severely affect signal quality, performance, and reliability.

Effective EMI shielding is critical in preventing this interference, particularly in high-stakes environments such as:

• Medical diagnostic equipment (MRI, CT, etc.)

• Aerospace systems

• Military communications

• Automotive electronics

• Consumer electronics

• Telecommunications infrastructure

Why Choose TMN for EMI Shielding?

✅ Precision Chemical Etching

Our photochemical etching process allows us to manufacture complex EMI shielding components with high precision and fine detail. This non-contact, stress-free method ensures zero material deformation, maintaining the integrity and performance of the final part.

✅ Custom Design Capabilities

We understand that no two applications are the same. That’s why TMN offers custom EMI shielding solutions tailored to your exact specifications. From single prototypes to high-volume production runs, our team works closely with you to design the most effective and efficient shielding component for your product.

✅ High-Quality Materials

We work with a range of high-conductivity metals ideal for EMI shielding, including:

• Stainless steel

• Copper

• Nickel silver

• Aluminum

• Mu-metal (for low-frequency magnetic shielding)

Each material is selected based on your specific frequency attenuation requirements and environmental conditions.

✅ Rapid Prototyping and Short Lead Times

Thanks to our in-house etching capabilities, TMN can deliver rapid prototypes with extremely short turnaround times—without the need for costly tooling. This accelerates your development process and reduces time to market.

Types of EMI Shielding Products We Manufacture

TMN provides a broad range of etched EMI shielding parts, including but not limited to:

• Board-level shields
  Single-piece or multi-cavity metal cans that protect components on a PCB from EMI.

• RFI Shielding Covers
  Custom-formed shields for electronic housings or connectors.

• Shielding Gaskets and Frames
  Precisely etched thin metal components designed to form EMI seals between surfaces.

• Flexible and Vented Shields
  Components designed to offer both EMI protection and airflow or thermal management.

• Custom Mesh and Perforated Screens
  Designed to attenuate EMI while allowing visibility, ventilation, or sound passage.

Industries We Serve

Our EMI shielding solutions are trusted by companies across a range of industries, including:

• Consumer Electronics: Smartphones, tablets, wearables, and smart home devices

• Medical Devices: Imaging systems, diagnostics, and monitoring devices

• Aerospace and Defense: Avionics, radar systems, and communications

• Automotive: ADAS systems, ECUs, infotainment units

• Telecommunications: Routers, servers, and 5G infrastructure

Advantages of Etched EMI Shielding from TMN

✔ High Accuracy and Fine Detail

Photochemical etching can achieve tolerances as tight as ±0.025mm, which is critical for complex shielding geometries and tight-fitting enclosures.

✔ No Burrs or Heat-Affected Zones

Unlike stamping or laser cutting, etching does not create burrs or heat-affected zones, ensuring the smooth, clean edges needed for EMI shielding performance.

✔ Design Flexibility

Etching allows for design changes at no additional tooling cost, making it ideal for prototyping or frequent product updates.

✔ Cost-Effective for All Volumes

Whether you need low-volume prototypes or high-volume production, our etching process offers competitive pricing without sacrificing quality.

✔ Eco-Friendly Manufacturing

Our chemical etching process uses recyclable materials and produces minimal waste compared to traditional subtractive manufacturing.

Our Process

At TMN, we follow a streamlined process to ensure every EMI shielding component meets your performance and quality expectations:

1. Consultation and Design
   Collaborate with our engineers to finalize your design, material choice, and functional requirements.

2. Phototooling and Masking
   We create a phototool (digital or film-based) to apply your pattern to the metal surface using a light-sensitive resist.

3. Chemical Etching
   The exposed areas are etched away using our proprietary chemical solutions, forming the exact pattern without mechanical stress.

4. Deburring and Finishing
   After etching, we clean and finish the part to your specifications, including plating, forming, or adding protective coatings.

5. Inspection and Quality Control
   All parts undergo strict quality checks using precision metrology tools to ensure conformity and performance.

6. Packaging and Delivery
   We carefully package and ship your shielding parts, ensuring they arrive in perfect condition, ready for assembly.

Commitment to Quality

At TMN, we are committed to excellence in manufacturing. Our EMI shielding parts meet international quality standards and can be manufactured in compliance with RoHS, REACH, and ISO 9001 requirements. Every product is inspected for dimensional accuracy, material integrity, and performance to ensure it meets your needs.

Request a Quote Today

Whether you’re designing a new product or improving the performance of an existing system, TMN Metal Parts Etching Factory is your trusted partner for custom EMI shielding solutions. We bring together innovation, precision, and unmatched customer service to help you achieve electromagnetic compatibility in any environment.