Chemical Etched EMI Shieldings with Exceptional Accuracy for Mobile Devices and Optical Systems

Chemical Etched EMI Shieldings with Exceptional Accuracy for Mobile Devices and Optical Systems

EMI Shielding Overview
EMI Shieldings are precision-engineered metal parts designed to protect sensitive electronic devices from external electromagnetic radiation and prevent internal emissions from interfering with other devices. Xinhaisen specializes in manufacturing high-performance, custom-etched EMI shielding cans, frames, and covers. Our products ensure signal integrity, comply with stringent EMC regulations, and are critical for the reliable operation of modern electronics.

Manufacturing Process

• Design & Tooling: Digital tooling from your CAD files, allowing for fast, low-cost prototyping.

• Material Selection: Cleansing of high-quality, conductive metals.

• Photoresist Lamination: Application of a light-sensitive film.

• Exposure & Development: UV light transfers the design through a phototool, creating the protective pattern.

• Precision Etching: Controlled chemical etching removes unwanted metal to form intricate features and ventilation patterns.

• Forming & Assembly: Precise bending and folding into 3D shapes (cans, cages) with consistent 90-degree angles.

• Finishing & QC: Optional plating (tin, nickel, silver) for enhanced solderability or corrosion resistance, followed by rigorous inspection.

EMI Shielding Features

• Exceptional Precision: Achieves fine shielding fingers/contacts, small ventilation holes, and complex geometries without mechanical stress or burrs.

• Superior Flatness & Consistency: Etching ensures perfectly flat surfaces for optimal sealing and uniform material thickness (±0.03mm).

• Lightweight & Low-Profile: Can be produced from ultra-thin materials (from 0.02mm), minimizing weight and space in compact devices.

• Design Flexibility: Easy integration of mounting tabs, solder pads, finger stock contacts, and custom ventilation patterns in a single part.

• Excellent Conductivity: Manufactured from highly conductive base metals, ensuring effective electromagnetic isolation.

EMI Shielding Specification

EMI Shielding Applications

• Telecommunications: 5G modules, routers, base station PCBs, RF filters.

• Consumer Electronics: Smartphones, tablets, wearables, IoT devices, motherboards.

• Automotive Electronics: ADAS sensors, infotainment systems, ECU modules, GPS units.

• Medical Devices: Portable monitors, imaging equipment, diagnostic devices.

• Industrial & Aerospace: Control systems, avionics, navigation equipment.

Our Advantages

• Speed from Prototype to Volume: Photochemical etching eliminates expensive hard tooling, enabling rapid design iterations and swift scale-up to mass production, even for urgent or large orders.

• Unmatched Precision & Quality: We specialize in high-accuracy etching, producing flawless shieldings with perfect geometry and reliable performance.

• Wide Material Expertise: We process a vast range of conductive metals to meet specific shielding effectiveness (SE), cost, and solderability requirements.

• True Customization: We don't just modify standard designs; we engineer solutions tailored to your exact PCB layout, height restrictions, and thermal/ventilation needs.

• Integrated Service: Capability to handle material sourcing, precision etching, forming, plating, and final assembly for a complete, ready-to-install part.

FAQ
Q1: Why choose chemical etching over stamping for EMI shields?
A: Etching is ideal for prototypes and complex designs—it’s faster, more cost-effective for low to medium volumes, produces no burrs (preventing shorts), and imposes no stress on the material, preserving its magnetic and conductive properties.

Q2: What material is best for my application?
A: Stainless steel offers good shielding and spring properties; copper provides the best conductivity; beryllium copper is excellent for high-performance shielding fingers. We will advise based on your frequency range, environmental factors, and budget.

Q3: Can you produce shielding cans with lids?
A: Yes, we can manufacture multi-piece assemblies, including perfectly matched frames and lids, often incorporating ventilation patterns and self-latching or solderable features.

Q4: How do you ensure shielding effectiveness (SE)?
A: Effectiveness starts with design and material selection. Our precision ensures tight tolerances, complete coverage, and good electrical contact points (fingers or gaskets), which are critical for creating a continuous Faraday cage.

Q5: What file format do you require for a quote?
A: We prefer 2D/3D CAD files (DXF, DWG, STEP) but can work with PDFs or Gerber files. Please include critical dimensions, material preference, and annual usage estimates.

Welcome to contact us at any time!

For over 13 years Xinhaisen has pioneered developments in photochemical etching, achieving standards admired by the industry and appreciated by a global customer base from a wide range of high-tech engineering markets.

Since found in 2012, in affiliating with our customers we have pioneered many new production techniques and methodologies in order to better serve their needs. It is these techniques that have advanced our capabilities further, enabling us to take what was once considered art and turn it into a science.

Now, we became China's leading photochemical etching specialist, with also the capacity of offering stamping and laser-cutting service. Our products include etching bipolar plates for fuel cell, speaker grills,  micro meshes&filters, tea&coffee infusers, shims&gaskets, Optical encoderdisk&strip, EMI/RFI shielding, Leadframes, connectors&contacts, printingstencils&foils and metal crafts.

Quality and service is our mission, Xinhaisen is committed to pursuing the highest standards of environmental performance. Responsibility for sustainability resides with all employees. The company has achieved ISO 14001 and IS0 9001 and IATF 16949 and is committed to maintaining that standard. With a fast response, high quality, best service and fair price, we have gained high reputation from our customers all over the world.