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   Shielding, EMI/RFI

Electromagnetic shielding is the process of limiting the flow of electromagnetic fields between two locations, by separating them with a barrier made of conductive material. Typically it is applied to enclosures, separating electrical devices from the 'outside world', and to cables, separating wires from the environment the cable runs through. Electromagnetic shielding used to block radiofrequency electromagnetic radiation is also known as RF shielding.

The shielding can reduce the coupling of radio waves, visible light, electromagnetic fields and electrostatic fields, though not static magnetic fields. (A conductive enclosure used to block electrostatic fields is also known as a Faraday cage.) The amount of reduction depends very much upon the material used, its thickness, and the frequency of the fields of interest.



Bronze Partners
3Gmetalworx Inc.
3M Electronic Handling & Protection Div.
A E M Inc.
Ad-Vance Magnetics, Inc.
ADE, Inc.
Allied Components International
Alpha-Core, Inc.
Amidon Inductive Components
Amuneal Manufacturing Corp.
Analab, L L C
API Delevan Inc.
APM Hexseal Corp.
Arcotronics Inc.
Armbar Industries, Inc.
Atlee Inc.
Bal Seal Engineering Co., Inc.
Beijing Jones Electronics Co., Ltd.
Belden Electronics Division
Ben Mer Manufacturing, Inc.
BMI, Inc.
Bravo Communications, Inc.
BRIM Electronics Inc.
Bustronic
Chomerics, Division of Parker Hannifin
Compac Development Corp.
Conductive Container
Conductive Technologies Inc.
Conta-Clip, Inc
Control Cable, Inc.
Cutcraft, Inc.
Daburn Electronics & Cable Corp.
Design Mark Industries
Dontech, Inc.
Duraswitch Industries, Inc.
Eagle Magnetic Company, Inc.
ECS Composites
El-Com/Cabletek
Electro-Metrics
Electro-Space Fabricators
Electronic Enclosures
Electronic Packaging System
Elite Electronic Engineering Company
Elma Electronic Inc.
Elna Magnetics
Emcor Enclosures
Emerson & Cuming
EngineeredStatic Corporation
Equipto Electronics Corp.
ETS-Lindgren
ETS-Lindgren
Fair-Rite Products
FerriShield, Inc.
Ferronics, Inc.
FIC Corp.
Furon CHR
G & H Technology
GM Nameplate
Gompf Brackets, Inc.
GSI Corp.
Hallmark Technologies
Hi-Tech Controls, Inc.
Hobart Tafa Technologies
JAE Electronics, Inc.
Jayco Interface Technology
Kaschke U.S.A. Inc.
Laird Technologies
LCR Electronics, Inc.
Leader Tech
LNP Engineering Plastics
Magnetic Radiation Laboratories
Magnetic Shield Corp.
MAJR Products Corp.
Max Levy Autograph, Inc.
MBK Enterprises Inc
Metex Corporation
Methode Electronics, Inc.
Metuchen Capacitors, Inc.
Microdot Connectors
Miller Dial Corp.
Mingstar Electronic Corp.
Minnesota Wire & Cable Co
MMG
Northwest Etch Technology
Offshore Solutions, Inc.
Omega Shielding Products, Inc.
On Line Graphics & Finishing, Inc.
Optima Electronic Packaging Sys.
PadTech Industries Ltd.
Parker Hannifin Corp.
Parker Hannifin Corp.
PDK Electronics
Premix Thermoplastics
Rapid Conn Inc
Rose and Bopla Enclosures
Schlegel Systems, Inc.
Schurter, Inc.
Screenprint/Dow
Sealcon LLC
Sealing Devices Inc
Select Fabricators Inc
Semtronics Corp.
Servometer/PMG, LLC
Shielding Resources Group, Inc.
Silver Cloud Mfg. Co.
SIMCO
Southern Micro Etch Inc
Spectrum Control, Inc.
Spira Manufacturing
Steward
Stockwell Rubber Company Inc
Swift Textile Metalizing LLC
Tapecon, Inc.
Tapecon, Inc.
TDK Corporation of America
Tech-Etch, Inc.
Techprint Inc.
Tecknit Inc.
TEMPEST INC.
TFD Inc.
The Hapco Group
The MuShield Company Inc.
Thermoceramix
Thermshield
Thrust Industries, Inc.
Triton Industries, Inc.
TWP, Inc.
Tyco Electronics Corp.
Vanguard Products Corporation
View Thru Technologies, Inc.
W L Gore & Associates Inc
Weico Wire & Cable, Inc.
Wieland Electric Inc.
World Products Inc.
Wurth Electronics Inc.
Zippertubing Company
Zytronic Displays Limited
Fix & Prog. Sinewave Oscillators - Frequency Devices

 

Books
U.S. demand for EMI/RFI shielding options to Exceed $600 million by 2008.(Market Watch): An article from: Circuits Assembly

EMI/RFI shielding effectiveness evaluation of bolt-together shielded rooms in long-term aging (Technical report) (Technical report)
R. G McCormack

RFI-EMI Shielding Materials: A Designer's Guide
J. W. Molyneux-Child and John Molyneux-Child

EMI/RFI shielding: Material and technological issues in the 1990s ([Business opportunity report])
Howard Kibbel

Architectural Electromagnetic Shielding Handbook: A Design and Specification Guide
Leland H. Hemming

Excerpt - page 53: "... U.S. Army Corps of Engineering Res. Lab. Tech. Rep. M296, "EMI/RFI shielding effectiveness evaluation of bolt-together rooms in long-term aging," June 1981. ..."
See more references to Shielding, EMI/RFI in this book.
The Technician's EMI Handbook: Clues and Solutions
Joseph Carr

Excerpt - page 61: "... at some of the techniques that can be used to EMI/RFI-proof electronic devices and circuitry. SHIELDING The first step in providing protection against EMI/RFI is shielding ..."
See more references to Shielding, EMI/RFI in this book.
Zzaap!: Training Esd, Fri, and EMI
Corp, M. Bruce, and M. Bruce Corp

Excerpt - page 101: "... or some other coating, which will make it relatively nonconductive.) EMI and RFI shielding of the entire unit must be considered. It should encompass ..."
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Introduction to EMC
John Scott and Clinton Van Zyl

Excerpt - Back Matter: "... Simplified. McGraw Hill. Molyneux-Child, J. W. and Hamilton, S. (1992). RFI/EMI Shielding Materials, a Designer's Guide. Woodhead Publishing Ltd. John Moore Associates ..."
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Noise Reduction Techniques in Electronic Systems, 2nd Edition
Henry Ott

Excerpt - page 202: "... J., 1968. Lantz, M., Moore, H. H., and Rackowski, D. "EMI/RFI Shielding." Borg-Warner Chemicals. McHenry, G. A. "Audio Frequency Interference Considerations in ..."
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Power Supply Cookbook (EDN Series for Design Engineers) (EDN Series for Design Engineers)
Marty Brown

Excerpt - page 245: "... of con- ductive paints that can be used to add EMI/RFI shielding to the case. Also, any vent openings may need magnetic ..."
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MCSE Guide to Networking Essentials
David Johnson and Ed Tittel

Excerpt - page 57: "... metal shield. Obviously, more shielding translates into greater cable costs. Shielding refers to any protective layers wrapped around a cable used to protect the cable from external interference (EMI or RFI). Shielding increases the viability of the signals that pass through ..."
See more references to Shielding, EMI/RFI in this book.
Practical Transformer Handbook: for Electronics, Radio and Communications Engineers
Irving Gottlieb

Excerpt - page 142: "... this end, an extensive technology based on isolating, filtering and shielding the EMI and RFI has developed. Many situations require more than a bit of ..."
See more references to Shielding, EMI/RFI in this book.
The Medical Device R & D Handbook
Theodore R. Kucklick

Excerpt - page 141: "... look of metal parts, or it can be used for EMI/RFI shielding. Consult the Thomas Register (www.thomasregister.com) for companies that offer these ..."
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Security+ Study Guide and DVD Training System
Robert J. Shimonski, Norris L. Johnson, Debra Littlejohn Shinder, and Michael Cross

Excerpt - Back Matter: "... D. Fiber-optic 2 Answer B is correct. UTP provides no shielding from EMI and RFI sources, 0 making it highly vulnerable to interference. Answer A ..."
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Industrial Design: Materials and Manufacturing
Jim Lesko

Excerpt - page 135: "... blow-molding ather and UV resistance ass reinforcement >EMI/RFI/ESD-shielding ructural-foam applications Uses: ansportation: lighting components, Properties: 0 ..."
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Joining of Plastics: Handbook for Designers and Engineers
Jordan Rotheiser

Excerpt - page 38: "... Electrical Requirements Volume resistivity: Dielectric constant: Dielectric loss: Electrical conductance: EMI/RFI shielding: E. Appearance Requirements Surface finish: Inside (SPI #) Texture no. ..."
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HTI+ Home Technology Integration All-in-One Exam Guide (All-in-One)
Ron Gilster, Helen Heneveld, and Ron Price

Excerpt - page 258: "... wrapped in a copper or foil shield to help reduce EMI and RFI interference. The shielding makes STP more expensive than UTP wire, which is why ..."
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Electronic Packaging and Interconnection Handbook
Charles A. Harper

Excerpt - page 113: "... silicones. New conductive silicone materials allow device manufacturers to shield EMI/RFI emissions and seal electronic enclosures, ... require environmental sealing and EMI/RFI shielding and cured in place to form a customized gasket that ..."
See more references to Shielding, EMI/RFI in this book.
Modern Electroplating, 4th Edition
Mordechay PhD Schlesinger and Milan PhD Paunovic

Excerpt - page 195: "... McCaskie, "Electroless Plating (Sulfur Dioxide Etching) of Plastic Enclosures for EMI/RFI Shielding," Proc. AESF Second Electroless Plating Symp., American Electroplaters and Surface ..."
See more references to Shielding, EMI/RFI in this book.
Jane's Military Vehicles & Logistics 2004-2005 (Jane's Military Vehicles and Logistics)
Shaun C. Connors and Chris Foss

Excerpt - page 913: "... foam-and-beam construction facilitates ease of shelter wall repair. The electromagnetic shielding provides over 60 dB of ... mode the NOMAD can provide EMI/RFI shielding to 60 dB. The interior dimensions are the same ..."
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Handbook of Plastics Testing Technology (Society of Plastics Engineers Monographs)
Vishu Shah

Excerpt - page 126: "... risk of fire, electrical shock, or personal injury. 4.7. EMIIRFI SHIELDING (10) 4.7.1. Introduction The explosive ... measurement techniques and standards for EMI and RFI shielding. All electronic devices are required to have electromagnetic compatibility. ..."
See more references to Shielding, EMI/RFI in this book.
Improving Product Reliability: Strategies and Implementation (Quality and Reliability Engineering Series)
Mark Levin and Ted Kalal

Excerpt - page 168: "... use 5. Mechanical reliability 6. Torque and hardware stack-up 7. EMI/RFI shielding 8. Electrostatic Discharge (ESD) protection and susceptibility 9. Solder reliability ..."
See more references to Shielding, EMI/RFI in this book.
Handbook of Materials Selection
Myer Kutz

Excerpt - page 581: "... barrier that harmlessly reflects or transmits electrical interference to ground. EMI/RFI shielding of electronic devices is achieved in many different ways. Two ..."
See more references to Shielding, EMI/RFI in this book.
RF Components and Circuits
Joe Carr

Excerpt - page 374: "... at some of the techniques that can be used to EMI/RFI-proof electronic devices and circuitry. Shielding The first step in providing protection against EMI/RFI is shielding ..."
See more references to Shielding, EMI/RFI in this book.
Handbook for Sound Engineers, Third Edition
Glen Ballou

Excerpt - page 325: "... the audio industry faces critical challenges from EM/RF inter- ference (EMI and RFI). Shielding cable and twisting pairs ensures signal integrity and provides confi- ..."
See more references to Shielding, EMI/RFI in this book.
The Complete Part Design Handbook: For Injection Molding Of Thermoplastics
E. Alfredo Campo

Excerpt - page 109: "... products are available for electromagnetic interference and radio frequency interference (EMI/RFI) shielding applica- tions. lded Parts: SI is used for high ..."
See more references to Shielding, EMI/RFI in this book.
Facilities Engineering and Management Handbook: Commercial, Industrial, and Institutional Buildings
Roger P. Wessel, Paul R. Smith, Mark M. Neitlich, and Anand K. Seth

Excerpt - page 1423: "... is required and frequent underfloor access is not required. Room EMI/RFI Shielding External sources of electromagnetic energy such as radar, radio transmitters, ..."
See more references to Shielding, EMI/RFI in this book.
Electronic Materials and Processes Handbook (Handbook)
Charles A. Harper and Charles Harper

Excerpt - page 622: "... silicones. New conductive silicone materials allow device manufacturers to shield EMI/RFI emissions and seal electronic enclosures, ... require environmental sealing and EMI/RFI shielding, and cured in place to form a customized gasket that ..."
See more references to Shielding, EMI/RFI in this book.
Failure Modes And Mechanisms In Electronic Packages
P. Singh and Puligandla Viswanadham

Excerpt - page 41: "... characteristics can be enhanced such as electromagnetic interference/ radiofrequency interference (EMI/RFI) shielding and controlled impedance [33]. Connector retaining features such as thumbscrews ..."
See more references to Shielding, EMI/RFI in this book.
Switch Engineering Handbook
John R. Mason

Excerpt - page 223: "... pattern of the graphics 5. Additional components, such as domes, shielding for EMI and RFI, and backlighting devices Using a basic, standard-construction membrane switch (Fig. ..."
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Polyester Molding Compounds (Plastics Engineering)
Burns

Excerpt - page 228: "... Norway, 1975. 24. F. W. Bradish, Conducive SMC/BMC composites for RFI/EMI shielding, in 33rd Annual Tech. Conf. , 1978, paper 4A, Reinforced ..."
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Conductive Polymers and Plastics: In Industrial Applications (SPE/ PDL Series)
Larry Rupprecht

Excerpt - page 143: "... used in electronic housings and structural members are transparent to EMI/RFI. Shielding previously meant employing metal housings and components or, more recently, ..."
See more references to Shielding, EMI/RFI in this book.
Handbook of Near-Infrared Analysis, Second Edition (Practical Spectroscopy)
Donald A. Burns and Emil W. Ciurczak

Excerpt - page 736: "... the analyzers that will not be dealt with here (vibration, EMI / RFI shielding, etc.). These and other details of the features, requirements both ..."
See more references to Shielding, EMI/RFI in this book.
Server+ Certification Study Guide
Tim Green

Excerpt - page 329: "... Issues 3 29 ensuring that cabling uses some form of shielding, RFI and EMI can be kept to a minimum. Vibrations and Physical Impacts ..."
See more references to Shielding, EMI/RFI in this book.
Carbon Fibers and Their Composites
Peter Morgan

Excerpt - page 864: "... has become important for incorporating in resin matrices, to confer EMI/RFI shielding, and in automobile air bags, to provide an electrical path ..."
See more references to Shielding, EMI/RFI in this book.
Electrodeposition: The Materials Science of Coatings and Substrates (Materials Science and Process Technology Series)
Jack W. Dini

Excerpt - page 88: "... 52. J. E. McCaskie, "Electroless Plating of Plastic Enclosures for EMI/RFI Shielding", AES Second Electroless Plating Symposium (Feb 1984), American Electroplaters and ..."
See more references to Shielding, EMI/RFI in this book.
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