EMI Shielding

EMI Shielding or Electromagnetic shielding is the practice of reducing and redirecting electromagnetic fields (EMF) typically in a confined area or space with barriers made of magnetic or conductive products and materials. These unique products and materials are often applied to electronic boxes, cabinets, and enclosures, for isolating a variety of electrical equipment and devices from their surroundings. The objective with these shielding products and materials is to reduce electromagnetic interference (EMI) through the coupling of radio waves, electromagnetic fields, and electrostatic fields in a specific application or environment.

majr products emi shielding gaskets

majr products emi shielding signals unsecured

As electronic devices operate, they emit electromagnetic radiation which crosses the path of other devices and sometimes the devices themself, interfering with operation.

What is the Purpose of EMI Shielding?

Understanding antennas and electromagnetic fields is the first step to understanding EMI shielding. EMI shielding is important for achieving electromagnetic-compatibility (EMC) for electronic products including digital systems. 

EMI Shielding is a tactical effort within EMC design strategy to: 

  1. eliminate external sources of electromagnetic radiation
  2. prevent electronic devices from interfering with its own operation (crosstalk) 
  3. reduce electromagnetic radiation that may interfere with other electronic equipment and systems when operating in a specific  environment.
  4. keep circuits from misbehaving as a result of ambient EMI/RFI from communication towers, aircraft, radio stations, etc…

 

Who Needs to Care About EMI Shielding and EMC Design?

Electronic equipment is used everywhere, often without any problem at all, however, there are several industries where it is critical to account for and strive for optimal function of electronic equipment.  To make it even more complicated, with digital systems’ ever-increasing frequencies and edge rates, EMC is becoming harder to achieve. Where might EMI Shielding be critical?

In these industries, electronic devices might need to operate with high levels of security to protect data transmission as well as ensure fail-proof functionality. EMI shielding could mean the difference between leaked military secrets, medical equipment failure, disruption to public utilities access like water, electricity and gas, as well as disruption to cell, internet and other communications services.

  • Military

  • Industrial

  • Energy

  • Medical

  • Secured Facilities

majr products emi shielding signals securedHow Do You Shield Against EMI?

In the simplest terms, the goal is to block  transmission and/or emission from devices. Depending on the device, its purpose, the potential for interference and its environment, EMI Shielding is typically comprised of a product placed on, in, or between a device or its enclosure. 

Examples of where and how EMI shielding is implemented include:

EMI Shielding Resources

EMI-RFI Shielding For Enclosure Windows—The Resources Engineers Need

At MAJR Products, our team of design engineers, technicians, and product support professionals understands that, and we’re here to help you streamline your design process. So in this post, we’re going to provide EMI and RFI engineers and designers with the information and resources you need to solve the most complex enclosure window design challenges.…

Conductive Elastomers: Silicone vs. Fluorosilicone Will Your Hardened Enclosure Remain Effective in Harsh Environments?

Conductive Silicones are often an essential component for hardened boxes and enclosures where environmental sealing and EMI/RFI shielding is required. The typical silicone-based gaskets and seals are impregnated with nickel, silver, copper, aluminum or other conductive particles to give non-conductive silicone their conductivity while providing IP rated environmental sealing that is required in many military…

Data Center Defense: RFI / EMI Shielding Design

Enclosure Shielding Can Be Your First Line Of Defense for Data Centers Against RFI and EMI Engineers and designers know that RFI and EMI can wreak havoc in data centers, SCIFs, and equipment enclosures of all scopes and sizes. In this post, we’ll discuss your first line of defense against unwanted access and egress of…

Navigating Galvanic Corrosion in EMI Shielding—Insights and Resources

We’ve Been Getting A Lot Of Questions Recently About Solutions For Navigating Galvanic Corrosion In EMI Shielding Design. And we’ll provide answers and design resources for EMI and RFI professionals in this post. Here’s what we’re going to cover: You asked for solutions, and we’re delivering.  So let’s get started with the basics. Galvanic Corrosion—The…

Galvanic Compatibility Interactive & Chart

What metal is compatible with _____? Answer this common design engineer question fast with MAJR’s Galvanic Compatibility Interactive. Try the easy to use interactive which walks you through the process in seconds to help you identify the least corrosive metal combinations for your design.

Conductive Rubber for EMI/RFI Shielding & Environmental Protection

Conductive rubber may be one of your most valuable assets when engineering for civilian or military projects.  It can help you achieve both EMI shielding and environmental protection of your application to required specifications.  It can also be cut or shaped to your needs, making it very versatile.  Conductive rubber could be one of those…

An Easy Way to Calculate a Microwave Wavelength in Inches

Download this free technical article on an alternative (and easier!) way to calculate microwave wavenlength in inches, developed by MAJR Products V.P. of electical engineering, Mike Oliver. It looks like Javascript isn’t enabled in your browser. Please enable it in order to fill out this form.

Conductive Rubber: What It Is and Where It’s Used

MAJR Products Corporation Vice President of Electrical/EMC Engineering, Michael J. Oliver, authored this white paper. The white paper covers everything from the different types of conductive elastomers to usage in different environments to temperature, hardness and shielding parameters. Download White Paper It looks like Javascript isn’t enabled in your browser. Please enable it in order…

Shielding Honeycomb Ventilation Panels and Dust Filtration Characteristics

MAJR Products Corporation Vice President of Electrical/EMC Engineering, Michael J. Oliver, authored this white paper. The white paper presents airflow characteristics of electromagnetic and radio frequency interference (EMI/RFI) shielding honeycomb ventilation panels and dust filtration characteristics of dust filtration panels. For a System Engineer, airflow data helps to identify the correct panel size for electronic…

Designing EMI Shielding For Power Generators In Challenging Environments

In this post, we’ll provide you with the resources you need for any commercial or military application that might need EMI/RFI protection for a generator.

EMI Gaskets: Die-Cut, Water Jet & Flash Cutting

EMI gaskets are used in a variety of electronic devices where EMI/RFI is an issue including communications, military electronics, and RF applications. When it comes to manufacturing EMI gaskets, there are three different methods MAJR Products uses: 1. Flash Cutting2. Water Jet3. Die-Cut Each of these three manufacturing techniques have specific benefits associated with them…

Knitting Wire Mesh for RFI / EMI Shielding – Strong, durable mesh makes Washers, Tape, Gaskets and more

Commonly used in EMI Shielding applications, metal wire mesh is a strand or wire knitted together creating a structure of woven and knitted shielding material. MAJR Products creates thousands of products on site for ambient electromagnetic noise attenuation, all while remaining light, flexible, breathable and durable.

Shielded HVAC Panel Design Guide For RFI And EMI Engineers

We’re getting a lot of questions about RFI and EMI attenuation, static pressure, and airflow in HVAC air ducts that penetrate secure buildings and SCIF enclosures. Enclosures, whether they’re built for human use or sensitive electronic equipment, require openings for conditioned air to enter the space for temperature control, ventilation, or both. As we pointed…

Making Knitted Wire Mesh – Superior EMI Attenuation + Flexibility for RFI / EMI Shielding

Knitted wire mesh is composed of wires woven into a fabric-type material resembling a tube. From the mesh, MAJR Products creates wire mesh tape, RFI / EMI wire mesh washers, EMR / RFI gaskets and more. This engineering and production process creates flexibility in many signal attenuation and hardened enclosure applications.

EMF vs EMI: The Difference is a Little More Important Than One Letter

A lot of engineers use the terms interchangeably, but project success with proper electromagnetic shielding is more easily achieved with a proper definition!

MAJR’s Honeycomb Waveguides for High Reliability Requirements

As a professional, you need products that enable your operation to work correctly – from electronics to motors to EMI waveguides. When you have a situation that requires consistent air flow in an EMI/RFI shielded environment, it’s crucial to ensure that air continues to move easily through a panel while allowing for the attenuation of…

Flash Cutting EMI Gaskets with Precision

Flash Cutting is a dieless, automated, reciprocating cutting system that utilizes a CNC machine to create custom EMI Gaskets in a matter of minutes. MAJR Products incorporates the flash cutter to create custom gaskets from materials such as conductive silicone, multicon and other materials.

EMI Shielding Design—5 Simple Tips For EMC Professionals

Is there a process to follow when specifying EMI/RFI shielding products for electronic equipment boxes, cabinets and enclosures? At MAJR Products, we get that question from mechanical, electrical, and RF engineers all the time, especially regarding our shielded ventilation panels. This post will discuss five tips to streamline your shielded vent panel design and specification…

MAJR Products’ Replacements for GORE GS2100 & GS5200

Manufacturers of equipment for demanding applications such as wireless infrastructure, ruggedized scanners/readers, test equipment, defense and aerospace communications need reliable and cost-effective EMI / RFI shielding. Many are approved for military aerospace and spaceflight applications and typically combine good shielding effectiveness with light weight and low outgassing. They are offered in various forms, such as…

EMP Shielding: The Background, Need and Solutions

Definitions & Distinctions HEMP is defined as an instantaneous, intense electromagnetic pulse (EMP) field that can overload and disrupt from great distances electrical systems and microcircuits. It is generally assumed if one occurred it would be set off by a high altitude nuclear explosion; obtainable by missile flight1 or, more recently believed, from a satellite.…

MAJR Shielding Products For SCIFs | A Strategic Design Guide

What exactly are SCIFs, and why do engineers need a variety of mil-spec shielding products when designing them? SCIF’s are Sensitive Compartmented Information Facility (pronounced “skiff”), a U.S. Department of Defense term for a secure room. It can be a secure room or data center that guards against electronic surveillance and suppresses data leakage of…

MAJR Products’s Knitted Wire Mesh: The Ultimate in Engineering & Flexibility

How many times have you wished you had one material – a “go to” choice for easier product design and engineering in EMI/RFI shielding applications – that offers: That product is found in MAJR Products’ knitted wire mesh. What is MAJR’s Knitted Wire Mesh? The vast usability of the product lies in the material’s design. …

Where And How To Source Shield Seal Gaskets | RFI-EMI Shield Products

Where can engineers, designers, and technical teams go to find the technical specifications and professional assistance they need to source conductive environmental gaskets and other RFI/EMI shielding products? Depending on the application, EMI shield seal gaskets are available in various material combinations, configurations, and gasket sizes. So, where can engineers get started on their search…

Your Source for Flame Retardant EMI Gasket Products

Engineers need a reliable go-to source to specify low outgassing, flame retardant conductive gasket products. Engineers and designers need to specify specialty products with confidence. And those products include flame retardant, low outgassing gaskets. This post will discuss: Common Uses for Flame Retardant Elastomers Specifications for Flame Retardant Elastomers Where To Go for More Information…

Shielded Fan Vents—Why You Need Them and How To Source Them

Are you trying to spec or source EMI/RFI Shielded Fan Ventilation Panels? If so, you’ve come to the right place. But what exactly are shielded fan vent panels, and when do you need them? We provided some answers in a previous post: EMI shielded vent panels are a critical part of hardened enclosures.  Honeycomb ventilation…

Shielded Metal Wire Mesh Products from MAJR Products

One common product you will find when dealing with EMI shielding is metal wire mesh.  But what is metal wire mesh and what does it do? Metal wire mesh is a strand or  wire knitted together creating a structure of woven and knitted  shielding material.   Different types of metal wire mesh include non-hardenable types, hardenable…

Reduce Interference from 5G Frequency Bands with MAJR’s Products

5G technology is becoming the industry standard, and its purpose is to connect virtually everyone, and every type of system, together to speed up transfer of information and deliver benefits such as: Higher multi-Gbps peak data speeds Ultra-low latency Upgraded reliability Massive network capacity Increased availability Uniform experience among users In addition to upgrading the…

MAJR Products – EMI Shielding for Any Industry, Any Need, Any Time

At MAJR, we’re proud to offer our customers a complete selection of shielding products that are designed by experts and created from military grade materials. When you work with us, you’ll be able to thoroughly review a full line of EMI shielding products and services including technical information, data sheets and applications info via our…

EMI Grounding Washers from MAJR

When you are working to ensure that your electronic enclosures are securely sealed from EMI, it’s important to use the correct materials for your application. In the event that you’re using standard flat washers that are improperly designed EMI leakage can occur causing failure in the equipment and entire operating system.  The MAJR Way MAJR…

Filter Media Options for Shielded Air Filtration Panels

Maintaining operational integrity requires a great deal of planning, research and using reliable products that can perform to demanding industry standards. MAJR’s selection of shielded air filtration panels are available in a variety of different frame and media options to help meet your technical specifications. MAJR is one of the leaders in the EMI shielding…

Waveguide Ventilation Panels from MAJR Products

What is a Honeycomb Waveguide Panel Shielding honeycomb waveguide panels let airflow into and out of an EMI/RFI shielded enclosure. The entering fresh air may be either cooled, heated, or at ambient temperature depending on the shielded enclosure environment and contents. For electronic equipment, the primary reason for airflow is usually to cool electronics; if…

EMI Vent Panels – Air Flow

The curve in figure 1 shows the resistance per square inch of airflow vs. inches of H2O for standard EMI/RFI honeycomb vent panels.

EMI/RFI Honeycomb Vent Panels

MAJR offers a wide variety of EMI/RFI Vent Panels in standard sizes which can reduce lead time and set up charges for our customers. However, we understand that some shielding requirements need special designs. MAJR’s team of engineers can assist with applications requiring special mounting or dimensions. For most applications, aluminum Code-32 honeycomb will provide…

MAJRAbsorber: Uses & Benefits

Radio frequencies (RF) are an amazing tool to send communications via airwaves to a receiver device that can be thousands of miles away. They’ve been harnessed since the beginnings of radio and now reach into every crevice of daily life for consumers and manufacturers.   Unfortunately, radio frequencies also cause Electromagnetic interference (EMI), also called radio-frequency…

EMI Vent Panels

EMI Ventilation panels from MAJR Products are ready-to-install EMI / RFI shielded panels in standard sizes made from brass, steel or aluminum for the electronics industry with minimum static pressure drop. Shielding effectiveness is accomplished using waveguide design principles – its 4:1 opening to depth ratio. The choice of an EMI / RFI vent panel…

EMI/RFI Connector Gaskets: What, Where and Why

When thinking about EMI/RFI connector gaskets, one of the best analogies might be in your own home, with water.  Water can be a godsend or a curse.  It needs to be contained in your plumbing system which takes it to where it is useful.  But a leak within your home or from the outside elements…

EMI Shielding for 5G: It’s a Whole New World

5G (fifth generation) is the newest communication infrastructure and electronic device  advancement to enable a multitude of faster, more functional, comprehensive technologies and human services available to everyone.  5G is used with mission critical communications, internet of things (IoT) and mobile broadband telecommunications. 5G Frequencies and Wavelengths The FCC recently granted 280 MHz from 3.70…

Shining a Transparent Light on EMI Shielded Windows

Wherever there is a window in a hardened enclosure, whether it’s in something as small as a handheld device or as large as a shipping container, there is the probability of EMI contamination.  EMI shielded windows are designed to solve this problem.  They allow for separation between the interior and exterior of a shielded unit…

EMI Vent Panels: Standard and Custom Products from MAJR

Air flow is an important part of many military electronic systems. Keeping equipment cool and air flowing is paramount to long term electronic system stability but creating openings for cooling can cause engineering issues. During design and manufacturing many electronic systems needing protection from EMI/RFI will pose a challenge that needs to be addressed around…

MAJRabsorber™: The Best High-Frequency RF Absorber Material

MAJRabsorber™: An Innovative RF Absorber Material Electromagnetic interference (EMI) is a major issue anywhere electronic circuits are found. Mitigating factors like increases in device frequency, high integration in electronic systems, higher power densities, and reductions in PCB thickness and size all contribute to EMI.  Shielding electronic devices from electromagnetic noise with conductive materials, such as…

MAJR Products Ventilator Systems & Medical EMC Shielding

Ventilator Systems & Medical EMC Shielding Medical facilities are one of the epicenters of the Covid-19 pandemic. Their capacity to treat infected patients with life-saving equipment like medical respirators is vital. Severe Covid-19 patients can develop a  life-threatening condition called acute respiratory distress syndrome (ARDS) that requires ventilators to deliver smaller volumes of oxygen and…

How to Use Our EMI/RFI Shielding Design Flow Chart

Once you’ve determined that your systems or components need isolation from surrounding electromagnetic fields, or to block the transmission of additional signals, designing the appropriate enclosure is crucial.  Our shielding design flow chart can help designers and engineers navigate the varied types of EMI/RFI shielding materials available to choose the right materials that meet your…

EMI/RFI Shielding For Medical Device Applications

EMI / RFI Shielding For Medical Device Applications Take any average-sized hospital in the U.S. and count the number of electronic devices in use. According to the World Health Organization (WHO), that number averages over 10,000. Imagine all those separate life-saving devices – magnetic resonance imaging (MRI), computed tomography (CT or CAT), Electromyography (EMG) and…

HEMP Danger Requires EMP Shielding

Fortunately, the chance of a direct military attack on America from a foreign country is very slim. However, as we’ve seen from 9/11 and other terrorist attacks on our soil, the chance of a smaller and more terroristic threat is still very real. One of those types of attack is from a High-Altitude Electromagnetic Pulse…

Find the Right Products with Our EMC Consulting Services

Many engineers understand the basics of EMC, but those in the medical, telecom, defense, and manufacturing industries may not have the resources or personnel to fully integrate EMC into their products to meet the standards set by their industry. In response to this need, MAJR Products offers EMC consulting services to bring products from the…

IP Ratings & Conductive Rubber

Conductive rubber in any form helps defense agencies and commercial electronic product industries meet environmental and EMI/RFI emissions requirements, which is crucial to protecting the integrity of susceptible applications like HVAC systems, power and signal panels, door and panel hinges, latches and brackets, floor drains, structure seams and ISO intermodal, container brackets, antenna mounts, cable…

TEMPEST, SCIF, and Electronic Shielded Enclosures

For systems to be certified to TEMPEST (Telecommunications Electronics Material Protected from Emanating Spurious Transmissions) specific test standards need to be passed such as NSA No. 94-106 for shielded enclosures and other NSA standards depending on the intended environment and operation. The TEMPEST certified telecommunications electronic enclosure needs to be a “Faraday Cage”. A Faraday…

MAJR Products Is Now A Raytheon Company Approved Supplier for Welding

MAJR Products is proud to announce that we are a recent addition to the Raytheon Company Approved Supplier List for welding products.  This approval formalizes the existing relationship between MAJR Products, Raytheon, and its various partners. This fruitful partnership will allow MAJR Products to expand the scope of our services and the industries we serve.…

MAJR Products To Sponsor 2019 SAE G46 EMC Meeting At The IEEE EMC Symposium

The internationally recognized manufacturing leader of EMI/RFI shielding products, MAJR Products, will be sponsoring the SAE G46 EMC Meeting at the 2019 International Symposium on Electromagnetic Compatibility, Signal & Power Integrity, in New Orleans, Louisiana. About The 2019 IEEE EMC Symposium Also known as the IEEE EMC Annual Symposia, the IEEE EMC Symposium, the IEEE…

Keeping emitting sources and radiating paths under control with EMI Shielding Tape

In simple terms, radiated EMI emission starts from an emitting source, propagates via a radiating path and reaches a susceptible receiver. The strength of the radiated EMI is determined by the source, the media surrounding the source and the distance between the source and the susceptor1…unless there are cables in close proximity to the source…

MAJRabsorber™ Innovation Changes RF Absorber Expectations

Every once in awhile true innovation transforms an industry.  Consider what the cloud has meant for business as it brought about data storage, access and co-worker collaboration.  Look at how the Internet of Things is frontiering cashierless shopping. Such champions in innovation will not only make the industry and applications they integrate with faster, easier…

Custom EMI Ventilation Panels: An End to the “Square Peg – Round Hole” EMI Shielding Dilemma

Hardened enclosures come in all shapes and sizes.  When you compound the possibilities of various applications, industries, specifications and regulatory authorities, it’s no wonder that standard sizes, types or material for shielding a hardened enclosure rarely meet specific needs for any given project.  Even though most hardened enclosures are custom designed with specific requirements in…

EMI/RFI Wire Mesh Grounding and Conductive Elastomer Washers: Hardened Enclosure Shielding in Small Places

The smallest details are often the ones that will determine whether an EMI hardened enclosure will be compliant or will not  meet EMC requirements. That’s especially true when it comes to the many bolts, screws, rods or shafts that need EMI/RFI shielding or grounding.  When you have to attenuate a signal or ground components of…

Conductive Coatings for Plastic Hardened Enclosures: Getting the Job Done Quickly and Cost Effectively

There is no doubt that plastics have their design advantages when building many hardened enclosures. Plastics products in various forms, such as acrylics, ABS or structural foams, are quick and inexpensive to produce once tooling is in place and can be molded or configured in complex designs much more readily than some other substrates. But…

A Guide to EMI Shielded Ventilation Panels: Protecting Your 2nd Largest Area of Exposure in a Hardened Enclosures

Think about the need for EMI shielded ventilation panels – what they do and why you need them.  Are you fully protecting that hardened enclosure with the right option?  Does it measure up to standards for your civilian or military application?

Honeycomb Waveguide Panels

Honeycomb Waveguide – An Attenuation Performance Explanation of a MAJR Products Honeycomb Waveguide Panel due to the Effect of a Waveguide Beyond Cuttoff Principle What is a honeycomb Waveguide panel? A shielding honeycomb waveguide panel is a product that lets air flow into and out of an EMI/RFI shielded enclosure. The entering fresh air may…

ConnectorGasket.com: The Convenient, Quick, and Cost-Effective Way to Order Connector Gaskets Online

ConnectorGasket.com: The Convenient, Quick, and CostEffective Way to Order Connector Gaskets Online When ordering connector gaskets, military contractors and electronics, IT, andtelecommunication companies often find it challenging to find suppliers that both offer a comprehensive range of gaskets and can deliver orders within a short period of time. As a result, procurement professionals, purchasing managers,…

Shielding For RF And Microwave Applications

Understanding Shielding for RF and Microwave System Applications Any electronic device emits some level of electromagnetic radiation. Electromagnetic interference (EMI) shielding and radio frequency interference (RFI) shielding products are used when the EMI/RFI of an electronic product or system, in particular high frequency operations, necessitates attenuation of EMI/RFI to a specific level; the attenuation of…

EMI/RFI Wire Mesh Grounding Washers And Conductive Elastomer Washers

EMI/RFI Wire Mesh Grounding Washers And Conductive Elastomer Washers With expertise in EMI/RFI shielding products development to be utilized in military and commercial applications, the engineers at MAJR Products provide EMC compliance and electrical safety grounding equipment. The grounding and conductive washers produced by MAJR Products are designed and manufactured to suit the needs of…

Conductive Rubber – What It Is and Where It’s Used

CONDUCTIVE RUBBER What It Is and Where It’s Used A MAJR Products Corp. Article by Mike Oliver     What is Conductive Rubber? Definition: Conductive Rubber is a generic term referring to any rubberized material with conductive properties which reduce or eliminate the EMI/RFI (electromagnetic interference and radio frequency interference) “noise” that is often associated…

FORM-IN-PLACE Gasketing

MAJR Products Form-in-Place automated EMI/RFI gasketing is offered to facilitate the increasing demand for shielding of smaller profile and mechanically tight tolerance areas for a variety of metal and plastic housings.

What Are the Standards for EMI Shielding?

Corrosion, temperature, exposure to water or humidity, device materials, airflow, human interaction and industry and military standards all play a role in EMC Design and creating the best choice for protection of a device.

There are hundreds of electrical, product, and environmental specifications for EMI/RFI shielding products and their applications; below are some of the common in our industry that we utilize when deciding on a material(s) for an EMI/RFI gasket or honeycomb vent panel configuration for a specific customer’s application.

  • MAJR Products Galvanic Compatibility Chart – based on MIL-STD-1250 (CORROSION PREVENTION AND DETERIORATION CONTROL IN ELECTRONIC COMPONENTS AND ASSEMBLIES)
  • MIL-C-5541F (DETAIL SPECIFICATION CHEMICAL CONVERSION COATINGS ON ALUMINUM AND ALUMINUM ALLOYS)
  • MIL-DTL-83528 (DETAIL SPECIFICATION GASKETING MATERIAL, CONDUCTIVE, SHIELDING GASKET, ELECTRONIC, ELASTOMER, EMI/RFI GENERAL SPECIFICATION)
  • MIL-STD-461 (REQUIREMENTS FOR THE CONTROL OF ELECTROMAGNETIC INTERFERENCE CHARACTERISTICS OF SUBSYSTEMS AND EQUIPMENT)
  • MIL-STD-464 (ELECTROMAGNETIC ENVIRONMENTAL EFFECTS REQUIREMENTS FOR SYSTEMS)
  • IEEE P1302 (GUIDE FOR THE ELECTROMAGNETIC CHARACTERIZATION OF CONDUCTIVE GASKETS IN THE FREQUENCY RANGE DC TO 18 GHZ)
  • IEEE-299 (IEEE STANDARD METHOD FOR MEASURING THE EFFECTIVENESS OF ELECTROMAGNETIC SHIELDING ENCLOSURES)
  • MIL-STD-188-125 (HIGH-ALTITUDE ELECTROMAGNETIC PULSE (HEMP) PROTECTION FOR GROUND-BASED C4I FACILITIES PERFORMING CRITICAL, TIME-URGENT MISSIONS
  • ICS / ICD 705 (TECHNICAL SPECIFICATIONS FOR CONSTRUCTION AND MANAGEMENT OF SENSITIVE COMPARTMENTED INFORMATION FACILITIES)
  • MIL-STD-810 (DEPARTMENT OF DEFENSE TEST METHOD STANDARD FOR ENVIRONMENTAL ENGINEERING CONSIDERATIONS AND LABORATORY TESTS)
  • NEMA Enclosures and IP rating (IEC 60529 DEGREES OF PROTECTION PROVIDED BY ENCLOSURES - IP CODE
  • NSA-94-106 – (NATIONAL SECURITY AGENCY SPECIFICATION FOR SHIELDED ENCLOSURES)
  • BEST PRACTICES GUIDELINE FOR ARCHITECTURAL RADIO FREQUENCY SHIELDING (REFERENCED IN ICD/ICS / ICD 705 TO BE USED FOR SCIF ENCLOSURES)

Materials and Use in EMI Shielding

While designing and selecting products and materials for EMC shielding, many factor come into play include specifications, attenuation requirements and galvanic compatibility. Different materials can provide different shielding and environmental outcomes in specific applications, let MAJR help assist with your application requirements using some of these materials and products:

Metal

  • Aluminum 
  • Brass
  • Copper
  • Nickel
  • Monel
  • Steel
  • Silver

Rubber

  • Silicone
  • Flourosilicone
  • EPDM
  • Neoprene
  • Urethane
  • Foam

Substrate

  • Sheets
  • Extrusions
  • Fabrics
  • Honeycombs
  • Knitted Mesh
  • Polycarbonates
  • Glass

Free Tools for Engineers to Design EMI Shielding

Make EMC design easier, faster and more accurate.

Galvanic Compatibility Interactive
Streamline Metallic Compatibility, avoid corrosion and maximize shielding effectiveness.

CAD Tool for EMI/RFI Shielded Vent Panels
Create FREE CAD Drawings for Standard EMI/RFI Shielded Ventilation Panels.

Environmental Considerations for Shielding
Navigate EMI shielding materials available to choose the right product for shielding and environmental requirements.

EMI Shielding Calculator
Calculate Shielding Effectiveness for Printed Circuit Board Shields and Other Enclosures.

The Benefits of Using MAJR Products in EMI Shielding Design

At MAJR Products, our American-made shielding products are designed to meet all specifications for EMI applications.

Tempest Compliant Products

Custom Design Solutions

Veteran Owned Business

50 Years of Combined Engineering Experience

Manufactured in the USA

ISO Certified 9001:2015

Engineering / Design Help Available

Military Grade Products

Registered Small Business

EMI Shielding Design Products

Our shielding products provide an electrically conductive, low impedance, path allowing the electromagnetic field to propagate on the outer surface of the shielded enclosure or on the inner surface if the electromagnetic field is generated from electronic equipment within the shield.

Shielding Gaskets & Tapes

Shielded Ventilation Panels

Shielded Windows and Conductive Coatings

Board Level Shielding and Thermal Products

RF Absorber Materials

Have a Question or Need a Quote?

Have a question or need additional information? Not sure where to start? The MAJR Products Team has the experience, knowledge and creativity to address all your EMI/RFI Shielding needs. Contact us today for a quote!