Custom Etched Metal Shields with Tight Tolerances From Fast Prototyping to Mass Production

Product Overview

Xinhaisen Technology provides high-precision EMI (Electromagnetic Interference) Shields manufactured using advanced chemical etching processes. These shielding components are designed to protect sensitive electronic devices from external electromagnetic radiation and prevent internal emissions from interfering with nearby systems. Our EMI shields are widely used in 5G communication devices, automotive electronics, medical equipment, aerospace systems, and consumer electronics such as smartphones and home appliances.

What is Chemical Etching?

Chemical etching (also known as photo etching or chemical milling) is a subtractive manufacturing process that uses chemical solutions to selectively remove material from a metal sheet to create precision parts.

Key steps include:

• Cleaning & Lamination: Metal sheet is cleaned and coated with photosensitive film.

• Exposure & Development: UV light transfers the pattern onto the film.

• Etching: Chemical solution dissolves exposed metal areas.

• Stripping: Remaining film is removed, leaving a burr-free, stress-free part.

Why etching for EMI shields?

• No mechanical stress or burrs.

• No tooling wear or high mold costs.

• Ideal for complex, fine patterns and prototypes to mass production.

Product Features

• Burr-free & Stress-free Edges: Maintains electrical integrity without secondary deburring.

• High Precision: Achieves fine openings and tight tolerances for optimal shielding effectiveness.

• Design Flexibility: Supports complex geometries, honeycomb patterns, slots, and custom cutouts.

• Material Versatility: Works with various conductive metals (see specification table).

• Low Tooling Cost: No hard tooling required – design changes are fast and affordable.

• Fast Turnaround: From prototype to high-volume production with short lead times.

Product Specifications

Product Applications

• Mobile phones & tablets – shielding for RF modules, processors, and memory chips

• Telecom base stations & 5G infrastructure – EMI shielding for filters and amplifiers

• Automotive electronics – ECUs, sensors, infotainment systems

• Medical devices – MRI, pacemakers, monitoring equipment

• Aerospace & defense – sensitive navigation and communication systems

• Home appliances – inverter-driven motors and control boards

• Optical & acoustic modules – noise isolation in cameras and microphones

Why Choose Xinhaisen Technology?

• Experience in complex etching: We produce precision parts for communication, medical, automotive, and aviation industries.

• Rapid & high-volume capability: From urgent prototypes to large-scale orders, we respond quickly.

• Wide material & thickness range: 0.02 mm to 1.5 mm – thin foils to sturdy shields.

• High-quality reputation: Known for precision, speed, and variety among global customers.

• One-stop solution: Raw material sourcing, etching, post-processing, and quality control.

Frequently Asked Questions (FAQ)

• Q1: Can you make EMI shields with very small holes for high-frequency applications?
  Yes. Our minimum hole diameter is 0.03 mm, and line width can be as small as 0.015 mm, suitable for high-frequency EMI shielding.
• Q2: Do you offer custom shapes and patterns?
  Absolutely. We work from your CAD or Gerber files. No hard tooling is required, so modifications are easy and low-cost.
• Q3: What materials are best for EMI shielding?
  Common materials include stainless steel, copper, and nickel silver. We help you select the best material based on conductivity, corrosion resistance, and cost.
• Q4: Is chemical etching better than stamping for EMI shields?
  Yes for complex, fine-pitch, or burr-sensitive designs. Etching provides stress-free, burr-free parts with no tool wear, especially suitable for thin metals and prototypes.
• Q5: What is your typical lead time for a prototype order?
  Prototype samples usually take 5–7 working days after design approval. Mass production takes 7–12 working days.
• Q6: Can you plate the shields after etching?
  Yes. We offer post-etching surface treatments such as tin plating, gold plating, or passivation upon request.

Welcome to contact us at any time!