Custom Circuit Board Shielding

Board Level Shielding is a critical component in the design and manufacture of electronic devices. It involves the use of metallic shields mounted directly on a printed circuit board (PCB) to contain or block unwanted electromagnetic energy.

EMI and RFI can lead to signal degradation, reduced device performance, or complete failure of electronic systems. BLS protects essential components by creating a grounded metal enclosure over specific regions on the PCB, isolating sensitive circuitry from external noise sources and preventing signal leakage.

Why Choose TMN for Board Level Shielding?

At TMN Metal Parts Fabrication Factory, we understand the importance of precision, reliability, and flexibility in EMI shielding. Our advanced manufacturing capabilities and skilled engineering team allow us to offer:

• Custom and Standard Shields: Whether you need off-the-shelf or tailor-made shielding cans, we deliver solutions that perfectly align with your product’s requirements.

• High-Precision Fabrication: Utilizing state-of-the-art stamping, laser cutting, and CNC machinery, we ensure high tolerance and consistent product quality.

• Cost-Effective Production: Through optimized design and tooling strategies, we help reduce material waste and manufacturing costs.

• Rapid Prototyping: Fast turnaround on prototype samples to speed up product development and testing.

• Wide Material Selection: We offer shields made from a variety of metals including stainless steel, nickel silver, tin-plated steel, brass, and copper alloys.

Applications of Board Level Shielding

Board Level Shielding is essential in a wide range of industries and applications, including:

• Consumer Electronics: Smartphones, tablets, smartwatches, and personal gadgets require shielding to prevent cross-talk and signal distortion.

• Telecommunications: Ensuring clean signal transmission in high-frequency systems such as routers, modems, and base stations.

• Medical Devices: Shielding critical in diagnostic and monitoring equipment for consistent and safe operation.

• Automotive Electronics: Protecting ECUs, infotainment systems, and ADAS (Advanced Driver Assistance Systems) from EMI.

• Industrial Controls: Used in automation equipment, PLCs, and IoT devices to ensure reliability in harsh electromagnetic environments.

• Aerospace & Defense: High-performance shielding for mission-critical avionics and communication systems.

Our Board Level Shielding Capabilities

TMN offers a comprehensive suite of BLS solutions, including:

1. One-Piece and Two-Piece Shields

• One-Piece Shields: A single stamped metal can with pre-defined cutouts or lances, ideal for simple applications with fewer access requirements.

• Two-Piece Shields: A frame (fence) and removable cover (lid) design allows rework and inspection post-assembly, suitable for complex circuitry.

2. Shield Design Flexibility

• Custom shapes and sizes to fit your PCB layout

• Perforations, vent holes, and wave soldering slots as needed

• SMT and through-hole mounting configurations

• Clip-on and snap-on options available for tool-free assembly

3. Materials and Finishes

We offer shields made from:

• Nickel Silver: Corrosion-resistant, solder-friendly, ideal for most applications.

• Tin-Plated Steel: Cost-effective and solderable, widely used for standard shielding.

• Stainless Steel: Superior strength and corrosion resistance.

• Copper Alloys: Excellent conductivity and shielding effectiveness.

Surface finishes include tin plating, nickel plating, and passivation for added durability and solder compatibility.

4. Manufacturing Techniques

• Progressive Die Stamping: High-volume, consistent output with tight tolerances.

• Laser Cutting: For low-volume or prototyping with quick turnaround.

• CNC Machining: Precision parts for complex geometries or low-batch requirements.

• Spot Welding & Assembly: For multi-part shield integration and reinforced construction.

Design Support and Custom Engineering

Our engineering team works closely with customers during the design phase to optimize performance and manufacturability. From early-stage concept drawings to full-scale production, TMN offers:

• 3D CAD modeling and technical drawings

• EMI performance analysis and suggestions

• Prototype production for validation

• Tooling design and maintenance

• Full DFM (Design for Manufacturing) support

We help identify the most efficient layout, material choice, and mounting method to ensure reliable shielding while minimizing production cost.

Quality and Compliance

TMN is committed to delivering products that meet or exceed industry standards. Our BLS products comply with RoHS, REACH, and are manufactured under ISO 9001-certified processes. We perform rigorous quality checks including:

• Dimensional inspection

• Material certification

• EMI shielding effectiveness tests (upon request)

• Solderability and corrosion resistance testing

With our robust quality management system, customers can trust TMN for consistent, high-performance shielding components.

Packaging and Delivery

TMN provides flexible packaging options tailored to customer requirements:

• Tape and reel for automated SMT placement

• Tray and tube packaging for manual handling

• Custom labeling and barcoding for traceability

We offer global shipping, with logistics support to ensure on-time delivery to your production lines, wherever you are.

Partner with TMN Metal Parts Fabrication Factory

At TMN, we pride ourselves on our customer-first approach, innovative engineering, and high-quality manufacturing standards. Whether you're launching a new product or improving an existing design, our Board Level Shielding solutions will protect your devices from EMI while keeping production efficient and cost-effective.

Let’s build better shielding together.

Contact us today to learn more about our capabilities or request a quote.