Board Level EMI (Electromagnetic Interference) Shielding refers to the use of small, precision metal enclosures or shields mounted directly onto printed circuit boards (PCBs) to prevent EMI from affecting or escaping from sensitive electronic components.

EMI is a major concern in today’s compact, high-speed electronic systems. It can cause malfunctions, degraded signal quality, or even failure in consumer electronics, medical devices, industrial controls, and automotive systems. Board level shields act as physical barriers that reflect or absorb unwanted electromagnetic energy, keeping internal circuits stable and external environments interference-free.

At TMN, we specialize in the design and fabrication of custom and standard EMI shielding cans, covers, and enclosures tailored to meet your PCB layout and system requirements.

Why Choose TMN for Your EMI Shielding Needs?

With over a decade of experience in precision metal parts fabrication, TMN offers complete EMI shielding solutions from design support to mass production. Here’s what sets us apart:

✔ Precision Fabrication

We use advanced manufacturing methods including progressive die stamping, CNC machining, and laser cutting to produce EMI shields with exceptional accuracy, consistency, and durability.

✔ Customization Capabilities

From one-piece to two-piece shields, TMN can create unique configurations based on your PCB layout, component size, and assembly process. We support surface mount, through-hole, and clip-on designs.

✔ Competitive Pricing

Our efficient production process, in-house tooling, and material optimization strategies help reduce costs while maintaining top-quality output.

✔ Rapid Prototyping

Need prototypes for testing or approval? TMN can deliver precision samples quickly to keep your product development on schedule.

✔ Quality Assurance

Every part is manufactured under strict quality standards. We adhere to ISO 9001, and our shielding products comply with RoHS and REACH directives.

EMI Shielding Product Types

We provide a wide range of board level EMI shielding solutions to suit different product architectures:

1. One-Piece EMI Shields

• Single, seamless construction

• Ideal for low-cost applications and fixed assemblies

• Available in standard or custom sizes

• Perforated or solid top options for thermal management

2. Two-Piece EMI Shields (Frame and Cover)

• Separate base (fence) and removable lid

• Allows for post-assembly inspection and rework

• Secure fit with snap-on, soldered, or clip-in designs

• Widely used in high-performance applications

3. Multi-Cavity Shields

• Compartmentalized designs for isolating multiple components or circuits on the same board

• Reduces crosstalk and interference between subsystems

• Available in both one- and two-piece options

Materials and Surface Finishes

Selecting the right material and surface finish is crucial for EMI performance, solderability, and durability. TMN offers the following materials:

• Nickel Silver – Excellent corrosion resistance, high shielding effectiveness, solder-friendly

• Tin-Plated Steel – Affordable and easy to solder, suitable for automated assembly

• Stainless Steel – High strength, durable, great for harsh environments

• Brass or Copper Alloys – Superior conductivity and EMI protection for high-frequency applications

Surface Treatments:

• Tin Plating

• Nickel Plating

• Passivation

• Custom coatings available on request

Mounting Options

We support various PCB mounting methods to ensure easy integration with your assembly process:

• Surface Mount Technology (SMT): Compatible with pick-and-place machines and reflow soldering

• Through-Hole Mounting: For stronger mechanical bonds

• Shield Clips and Retainers: Tool-free installation and easy rework

• Custom tabs, pins, or pegs to meet your production requirements

Engineering & Design Support

At TMN, we believe in collaboration. Our experienced engineering team works closely with your designers to develop shields that meet functional, spatial, and regulatory requirements.

Our design services include:

• 2D & 3D CAD modeling

• EMI simulation support (in partnership, if needed)

• Design for Manufacturing (DFM) optimization

• Prototype development and testing

• Tooling design for high-volume production

Whether you're in the early stages of a new product or modifying an existing design, TMN provides the technical support you need to ensure shielding success.

Industry Applications

Our Board Level EMI Shielding solutions are trusted across multiple industries, including:

• Consumer Electronics: Laptops, tablets, smartphones, wearable devices

• Telecommunications: Routers, modems, base stations, antennas

• Medical Equipment: Monitors, imaging systems, diagnostics devices

• Automotive Systems: Engine control units (ECUs), infotainment, ADAS

• Industrial Automation: PLCs, robotics, control panels

• Defense and Aerospace: High-reliability shielding for mission-critical systems

Quality and Compliance

TMN is committed to quality at every level of production. Our manufacturing process includes:

• Incoming material inspection

• In-line and final dimensional checks

• Surface and finish verification

• RoHS and REACH compliance

• Traceability through lot tracking

We continuously invest in our processes and technology to deliver shielding products that meet global quality expectations.

Packaging and Delivery

We offer flexible packaging options to suit your production environment:

• Tape & reel packaging for SMT lines

• Trays or tubes for manual handling

• Custom packaging and labeling upon request

With our efficient logistics and reliable supply chain, we deliver products on time, globally.

Partner With TMN for Reliable EMI Shielding Solutions

At TMN Metal Parts Fabrication Factory, we’re more than just a parts supplier—we’re your manufacturing partner. Our combination of technical expertise, advanced production capabilities, and customer-focused service makes us the ideal choice for your Board Level EMI Shielding needs.

Let us help you protect your electronics, improve product performance, and meet EMI compliance standards—cost-effectively and on time.

Contact TMN today to get started or request a quote.