OEM Custom High-Precision PCB EMI/RFI Shielding Frame Manufacturer, Products
Product Description
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:
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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.
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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.
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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
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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).
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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.
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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.
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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.
Technical FAQ
Q1: What files and data are required to initiate a custom quotation?
A1: Please provide your 3D CAD models in STEP, IGES, or SolidWorks format, along with a detailed 2D engineering drawing indicating critical dimensions, material preference, thickness, and tolerancing requirements.
Q2: How does Sunmy Hardware guarantee tight co-planarity standards for SMT pick-and-place?
A2: We implement in-die sensor monitoring alongside automated optical inspection (AOI) systems and custom-made co-planarity gauge blocks. Standard production maintains co-planarity within ≤0.08mm, with specialized adjustments achieving ≤0.05mm for high-precision layouts.
Q3: What is the typical lead time for prototype tooling vs. mass production?
A3: Rapid prototypes using soft tooling or CNC laser + bending typically take 5 to 7 business days. Hard tooling / progressive production dies require 15 to 25 days depending on layout complexity, followed immediately by sample approval and high-speed mass production.
Q4: Do you offer flexible Minimum Order Quantities (MOQ)?
A4: Yes. We are dedicated to supporting your product development lifecycle. We offer flexible MOQs for initial engineering verification testing (EVT) and design validation testing (DVT) phases before scaling up to high-volume commercial production batches.
Q5: Which surface finishing options provide optimal solderability and corrosion resistance?
A5: We provide raw Nickel Silver for direct reflow soldering without additional plating, as well as electrolytic Tin Plating, Selective Gold Plating, and Nickel Plating to ensure minimal contact resistance and long-term shelf-life protection.
Q6: Can you manufacture multi-compartment EMI frames for complex PCB layouts?
A6: Yes, our progressive tooling allows custom multi-compartment internal wall configurations, enabling isolated shielding for multiple RF/digital components within a single structural frame to optimize PCB real estate.
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