Editorial Technical Reference

Shielding Housing

This page explains how Shielding Housing is classified within Computer, Electronic and Optical Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A protective enclosure designed to contain and shield EMI filter components from external electromagnetic interference.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Shielding Housing

Definition
The shielding housing is a critical component of an EMI filter panel that provides physical protection and electromagnetic shielding for the filter's internal components. It prevents external electromagnetic interference from affecting the filter's performance while also containing any electromagnetic emissions generated by the filter itself, ensuring compliance with electromagnetic compatibility (EMC) standards. The housing is typically fabricated from conductive materials such as galvanized steel, aluminum alloy, or copper alloy, and its design must account for material conductivity, thickness, and the integrity of seams and openings to maintain shielding effectiveness. Key parameters include shielding effectiveness of 60–80 dB at 1 GHz (per IEC 61000-5-7), material grade SPCC (cold-rolled steel, optional tin plating, per JIS G3141), thickness of 0.8–1.5 mm, dimensions (L×W×H) of 50–200 mm, tolerance of ±0.2 mm (per ISO 2768-m), operating temperature range of -40–85°C, IP rating of IP54–IP65 (per IEC 60529), surface finish of electroless nickel (Ni 5–10 μm, per ASTM B689), weight of 0.5–2.0 kg, and mounting type with threaded holes for M3–M6 screws (per ISO 965). These values are reference ranges and must be confirmed for the specific model and application. The housing's effectiveness depends on proper installation, including grounding and sealing of all openings. Regular inspection for corrosion, mechanical damage, and seal integrity is recommended to ensure continued performance. If the housing is compromised, the EMI filter may fail to meet EMC standards, leading to potential interference with other equipment. Always verify model-specific values and standards with the legal manufacturer or supplier.
Working Principle
The shielding housing operates by creating a conductive enclosure around the EMI filter components. When electromagnetic waves encounter the housing, they induce currents in the conductive material, which are then dissipated as heat or redirected away from the protected components. The housing's effectiveness depends on its material conductivity, thickness, and the integrity of seams and openings. For optimal performance, the housing must be properly grounded and all seams and openings must be designed to minimize electromagnetic leakage. The specified shielding effectiveness of 60–80 dB at 1 GHz indicates the attenuation provided under ideal conditions; actual performance may vary with installation and environmental factors.
Common Materials
Galvanized steel, Aluminum alloy, Copper alloy
Technical Parameters
ParameterTypical rangeNotes & selection driver
Shielding Effectiveness60–80 dBAt 1 GHz; higher for better EMI protectionIEC 61000-5-7
MaterialSPCCCold-rolled steel; optional tin platingJIS G3141
Thickness0.8–1.5 mmAffects mechanical strength and shielding
Dimensions (L×W×H)50–200 mmCustomizable per filter size
Tolerance±0.2 mmEnsures proper fit and sealingISO 2768-m
Operating Temperature-40–85 °CContinuous operation
IP RatingIP54–IP65Dust-tight and water-resistantIEC 60529
Surface FinishNi 5–10 μmElectroless nickel for corrosion resistanceASTM B689
Weight0.5–2.0 kgDepends on size and material
Mounting TypeM3–M6 screwThreaded holes for secure mountingISO 965

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Housing Body Part
    Main structural enclosure providing primary shielding
    Material: Galvanized steel
  • Cover Plate Part
    Removable access panel for filter maintenance
    Material: Galvanized steel
  • EMI Gasket Part
    Conductive seal to maintain shielding integrity at seams
    Material: Conductive elastomer
  • Mounting Brackets Part
    Attachment points for securing housing to panel or equipment
    Material: Steel

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 2 bar
other spec: EMI shielding effectiveness: 60-100 dB (depending on frequency and material)
temperature: -40°C to +125°C
Media Compatibility
✓ Electronics enclosures ✓ Power supply units ✓ Communication equipment
Unsuitable: High-pressure washdown environments
Sizing Data Required
  • Internal component dimensions
  • Required EMI shielding frequency range
  • Mounting space constraints

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Fatigue cracking
Cause: Cyclic thermal or mechanical stresses from vibration, thermal expansion/contraction, or pressure fluctuations leading to crack initiation and propagation.
Corrosion/erosion
Cause: Exposure to corrosive fluids, abrasive particles in process streams, or galvanic corrosion due to material incompatibility with adjacent components.
Maintenance Indicators
  • Visible cracks, deformation, or material loss on housing surfaces
  • Unusual vibration, rattling noises, or increased operating temperatures indicating compromised structural integrity
Engineering Tips
  • Implement regular non-destructive testing (ultrasonic, dye penetrant) to detect early-stage cracks before catastrophic failure
  • Apply protective coatings compatible with process fluids and ensure proper material selection for specific service conditions

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
DIN EN 60529 - Degrees of protection provided by enclosures (IP Code)

Quoted from the published standard.

Manufacturing Precision
  • Flatness: 0.1mm per 100mm
  • Hole diameter: +/-0.05mm
Quality Inspection
  • Salt spray test (ASTM B117) for corrosion resistance
  • Electrical continuity test for EMI/RFI shielding effectiveness

Manufacturers of Shielding Housing

Manufacturer profiles associated with Shielding Housing.

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Frequently Asked Questions

What materials are available for the shielding housing?

The housing can be made from galvanized steel, aluminum alloy, or copper alloy. The material choice affects conductivity, weight, and corrosion resistance. The listed material grade SPCC (cold-rolled steel) is a reference; confirm the actual material with the supplier.

What is the shielding effectiveness range?

The shielding effectiveness is specified as 60–80 dB at 1 GHz, per IEC 61000-5-7. This is a reference range; actual performance depends on the housing design, installation, and environmental conditions. Verify with the manufacturer for your specific application.

What are the standard dimensions and tolerances?

Dimensions (L×W×H) range from 50–200 mm, with a tolerance of ±0.2 mm per ISO 2768-m. These are reference values; the housing can be customized to fit the EMI filter size. Confirm exact dimensions with the supplier.

What IP rating does the housing have?

The housing is rated IP54–IP65 per IEC 60529, indicating dust-tight and water-resistant properties. The specific rating depends on the model and sealing method. Verify the IP rating with the manufacturer for your required environment.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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