Product Overview
Shenzhen Sunmy Hardware Co., Ltd. specializes in engineering and manufacturing premium-grade, custom PCB EMI/RFI Shielding Frames (Shielding Cans). These components are vital for modern high-density electronic assemblies, serving to isolate sensitive RF/microwave circuits, microcontrollers, and wireless modules from electromagnetic interference (EMI) and radio-frequency interference (RFI), while preventing internal emissions from disrupting adjacent components.
Featuring an intricate multi-compartment architecture, custom geometric cutouts, and dedicated grounding/positioning pins, our shielding frames ensure seamless integration with automated Surface Mount Technology (SMT) pick-and-place lines. Built for superior co-planarity, durability, and high shielding effectiveness, these frames provide robust protection for demanding commercial, industrial, telecommunications, and automotive electronic ecosystems.
Process & Manufacturing Insights
Our manufacturing division leverages cutting-edge Precision Sheet Metal Stamping technology to achieve complex three-dimensional shapes with tight structural tolerances. The production lifecycle comprises:
- Advanced Tooling & Progressive Dies: We design and build in-house progressive stamping dies engineered for high-volume repeatability, ensuring every batch maintains perfect structural alignment, flat surfaces, and crisp 90-degree bends without micro-cracking.
- Precision CNC Bending & Forming: For complex geometries, low-volume validation phases, or rapid prototyping, advanced CNC forming machines are deployed to achieve excellent co-planarity (typically within ±0.05mm), preventing defects during reflow soldering.
- Strategic Material Selection & Surface Finish: We utilize premium materials such as Nickel Silver (Cu-Ni-Zn alloy) for excellent native solderability and corrosion resistance without post-plating, as well as Tin-Plated Steel, Stainless Steel, and Brass. Surface finishes are strictly controlled to facilitate low electrical contact resistance and optimal thermal characteristics.
Technical Specifications
| Parameter / Property |
Technical Standard / Capability |
Customization Scope |
| Primary Manufacturing Process |
Precision Sheet Metal Stamping / Progressive Die |
100% Tailored to customer tool design |
| Common Materials |
Nickel Silver (C7701/C7521), Tin-Plated Steel, Stainless Steel (SUS301/304), Brass, Copper |
Available upon request based on RF shielding needs |
| Material Thickness Range |
0.15 mm – 1.00 mm |
Fully customizable based on structural requirements |
| Dimensional Tolerance |
±0.02 mm to ±0.05 mm (High Precision) |
Strict adherence to critical-to-quality (CTQ) dimensions |
| Co-planarity Control |
≤ 0.08 mm (Standard SMT requirement) |
Optimized down to ≤ 0.05 mm for ultra-fine pitch PCBs |
| Surface Finishing |
De-greasing, Cleaning, Tin Plating, Nickel Plating, Selective Plating |
Custom plating thickness and chemical cleaning protocols |
| Geometry & Layout |
Multi-compartment walls, internal labyrinth ribs, thermal ventilation slots, positioning tabs |
Completely configurable based on PCB component layout |
| Packaging Formats |
Tape & Reel (EIA-481 standard), Matrix Tray, Bulk Pack |
Configured for automated high-speed SMT pick-and-place lines |
Key Features & Strategic Advantages
- Uncompromised Shielding Effectiveness: Engineered with meticulous continuous trace contacts and precision interlocking joints to eliminate RF leakage across multi-band wireless designs (5G, Wi-Fi 6E/7, Bluetooth, GPS).
- 100% Full Customization & DFM Support: We translate your STEP/IGES CAD layouts into production-ready designs. Our engineering team conducts thorough Design for Manufacturability (DFM) reviews to optimize tooling cost, material yield, and SMT assembly yield.
- Superior Reflow Solderability: By utilizing high-grade raw materials and advanced chemical de-greasing cycles, our shielding frames eliminate oxidation risks, guaranteeing perfect solder wetting, robust mechanical joints, and minimal voiding.
- Robust OEM/ODM Development & Tooling Capacity: Shenzhen Sunmy Hardware is a true manufacturing partner. From rapid CNC prototypes within days to complex multi-stage progressive stamping dies for millions of parts, our robust manufacturing infrastructure guarantees short lead times and stable supply chains.
