These companies manufacture a variety of magnetics, absorbers, and shielding for use
in RF applications. Applications range from RFI/EMI enclosures to screen rooms, custom
shielding for PCBs, and machined chassis, noise filters, or ferrites for keeping RF energy
on the right side of a conductor can be found here.
Achieving a successful RF design is often dependent upon proper implementation of
shielding. The higher the frequency, the higher the power levels, or the more crowded
the frequency band, the more difficult it is to design shielding that will provide the
necessary level of isolation. Fortunately, there is a lot of design information available
in the form of white papers, datasheets, and online write-ups.
For most applications, it is possible to obtain success using off-the-shelf components
and well-tried methods. Sometimes, though, it is necessary to secure the assistance of
engineers whose experience lies in the realm of shielding.
3Gmetalworx | 905-738-7973
| Toronto, Ontario, Canada
PCB-mounted application-specific RF/EMI shielding enclosures
including true multi-cavity solutions.
Adams Magnetic Products
| 800-747-7543 | Elmhurst, IL
Ferrite cores & accessories, flexible, ceramic,
alnico, Samarium Cobalt magnets, Neodymium products, magnetic assemblies, and more.
| +49 7191 9659 0 | Germany
Microwave components including circulators, isolators,
waveguide and coaxial components, phase shifters, ferrites, thin film technology.
Amuneal Manufacturing Corp
| 800-755-9843 | Philadelphia, PA
EMF & magnetic shielding, metal components &
assemblies, sheet metal and machined components and assemblies.
| 978-388-2993 | Amesbury, MA
Multilayer, reticulated, & Lossy foams, EMI absorbers,
EMI shielding gaskets, magnetic absorbers (MAGRAM), radar absorbing structures (RAS),
Systems | 918-624-2888 | Tulsa, OK
Medical enclosures, pyramidal anechoic
chambers, shielded doors, Solidcore Modular Systems, welded enclosures.
| 781-935-4850 | Woburn, MA
Copper foil tape, EMI shielding, elastomer EMI gaskets,
| 714-708-8715 | Costa Mesa, CA
Coiltech is a leading manufacturer of high quality
surface-mount inductors, chokes, and coils.
Coiltronics (now Cooper Bussmann, now Eaton)
| Ellisville, MO
Transformers & inductors for DC-DC & switchmode applications
requiring high frequency magnetics.
Solutions (CTS) | 1-817-503-8862 | Fort Worth, TX
Solutions (CTS) is your one source for off-the-shelf RF Shield Box and RF Enclosures
when you need RF shielding with a solid construction and repeatable results. Also customized
integrated RF Shield Box or RF Enclosure test solution for manual or automatic testing
at an off-the-shelf solution price.
Cobham) | +44 (0) 1243 670711 | UK
Manufacturer and supplier of microwave equipment
including waveguides, couplers, diplexers, anechoic chambers, antenna rotary joints,
antenna, radar & satellite communications subsystems & components for commercial
and military applications.
Cuming Lehman Chambers
| 717-264-2265 | Chambersburg, PA
Design and construction of RF shielded anechoic
chambers for the commercial and defense markets.
Cuming Microwave Corporation
| 800-432-6464 | Avon, MA
RF absorbers, dielectric materials, anechoic materials &
chambers, syntactic foam flotation equipment, syntactic foam insulation.
| 888-725-5361 | Dallas/ TX
EMI/RFI shielding solutions using plating, vacuum metallization
and conductive paint. Dispensed conductive gaskets. 3D metal patterns on plastic including
| 510-668-5100 | Fremont, CA
Switching power supplies, chip inductors, DC/DC converters,
voltage regulator modules, EMI filters, voltage controlled oscillators (VCO), temperature
controllers, thermal management products, video displays.
| 562-926-7742 | Santa Fe Springs, CA
EMI/RFI Shielding products, EMI/RFI honeycomb
panels, EMI shielding air vents, wire mesh, gaskets, connector gaskets, die cutting,
Eagle Group Northeast
Corp | 508-384-9700 | Woonsocket, RI
EMI | RFI & microwave foil shielding,
RF absorbers, injection molding.
| 800-862-1640 | W. Conshohocken, PA
Cores and shielding for electronic applications.
| 800-553-2870 | Woodstock, NY
Magnetic components, in standard and non-standard core
shapes, soft ferrites, amorphous alloy, powdered iron, MPP and Sendust cores & accessories,
core gapping, CNC machining, conventional grinding, and assembly of ferrite & other
| 915-590-0795 | El Paso, TX
Custom manufacturer of coils, powerline filters, signal
line filters, EMI filters, low pass filters and inductors.
Emerson & Cuming Microwave
Products (now Laird) | 781-961-9600 | Randolph, MA
Eccosorb microwave &
RF absorbers, anechoic chambers. They have a really nice chart available for determining
the dielectric constant and loss tangent.
Espey Mfg & Electronics
Corp | 518-245-4400 | Saratoga Springs, NY
Custom magnetic design, mW
to MegaW, all forms including pulse, impedance matching, SMPS, power, rectifier, inductor,
reactor, mag-amp, CT, PT, high voltage to 300kV.
| 512-531-6400 | Cedar Park, TX
Anechoic chambers, absorbers, antennas, filters, Helmholtz
coils, probes, meters, TEM cells, shielded enclosures, screen rooms, positioners.
| 800-836-0426 | Wallkill, NY
Large toroids, chip beads, chip inductors.
FDK | 858-558-8368
| San Diego, CA | Japan
Piezoelectric buzzers, capacitors, inductors, resistors, transformers,
anechoic chambers, ferrites, VCO's, power supplies, circulators, combiners/dividers,
motors, optics, synthesizers, batteries, RF absorbers, switches.
| 212-268-4020 | New York, NY
Snap-on RFI cable chokes.
| 716-388-1020 | Fairport, NY
Toroids, beads, baluns, multi-hole cores.
| 915-599-2616 | El Paso, TX
Soft ferrite products & accessories, integrated inductive
components, multilayer suppressors & inductors.
Fischer Custom Communications
| 310-891-0635 | Torrance, CA
TEM cells, EMI filters, Helmholtz coils.
Systems BV | +31 78 613 13 66 | The Netherlands
RF shielding, Faraday
cages, EMI shielding gaskets, conductive foil tape, conductive glue, conductive paint.
214-956-0055 | Dallas, TX
Custom fabrication of EMI/RFI shielding and gasketing, dielectric
insulation, laminates, foils, tapes, adhesives.
+44 (0)1376 348115 | Braintree, Essex, UK
EMI shielding conductive fabric for cable
shielding, stainless wire mesh, conductive tube, conductive | EMI shielding fabric adhesive
tape and all kinds of gasket, etc.
KOA Speer Electronics
| 814-362-5536 | Bradford, PA
Resistors, capacitors, 3-terminal EMI/RFI filters, circuit
protection, inductors, integrated components.
| 800-843-4556 | Delaware Water Gap, PA
EMI shielding, BeCu, fabric over foam, knitted
mesh wire, surface mount shields, conductive elastomers.
LBA Group |
252-757-0279 | Greenville, NC
RF & wireless telecommunications industry products &
services including antennas, capacitors, inductors, shielding systems, test equipment,
testing and technical services. RF Awareness & Antenna Co-Location Training.
| 813-855-6921 | Tampa, FL
Manufactures electronic shielding products including gasketing
that help prevent electromagnetic or radio frequency interference (EMI/RFI) on
circuit board applications.
(now ETS-Lindgren) | 512-531-6400 | Cedar Park, TX
Absorbers, antennas, shielded fiber
optic camera systems, RF Microwave test chambers, EMF instruments, power and signal line
filters, positioners, probes, test boxes.
Magnetic Component Engineering
| 800-989-5656 | Torrance, CA
Blocks, discs, rings, and round bars in various materials,
services including magnetizing, testing, stabilization, calibration of magnets, advanced
coatings & platings, assembly of PM systems & structures, design, engineering,
plate magnets, tube magnet assembly, pulleys, Hopper Grates, magnetic sweepers, stationary
800-245-3984 | Pittsburgh, PA
MnZn ferrite cores for high frequency power transformers
and inductors, EMC filters, and other applications, powder cores for switched-mode power
supplies, switching regulators, and noise filters, strip wound cores come as tape cores,
cut cores, miniature bobbin cores, or ring cores and are used in safety critical applications,
aerospace, and medical applications.
MAJR Products |
888-763-2952 | Saegertown, PA
Electromagnetic Interference | Radio Frequency Interference
(EMI/RFI) Shielding - gaskets, elastomers, fingerstock and air ventilation, filtration
panels, grounding washers, ferrites, thermal management.
Masach Technologies Ltd
| 972-2-5356607 | Israel
Customized RF shielding, RF shields, RMI solutions, RFI solutions.
Fast, high quality, cost effective RF shields, standard and custom designed.
| 858-452-1700 | San Diego
Designs manufactures innovative RF absorbers, microwave
absorbers, and EMI shielding materials for integration into military and electronics
Metglas | 800-581-7654
| Conway, SC
Amorphous metal ribbon and components used in the production of electrical
distribution transformers, high frequency magnetic components for power electronics,
material for anti-theft tags, brazing alloys, solder, and toroid cores.
| 800-356-5977 | Anaheim, CA
Toroids, iron powder cores for power conversion &
line filter applications & radio frequency applications, magnetic alloy core materials
for high temperature applications, inductor design software (free).
888-669-3539 | Goffstown, NH
Custom shielding, monitor enclosures, raw materials for
low frequency RF shielding up to 50 kHz.
| 973-472-5161 | Passaic, NJ
RF and Microwave absorbers for the DOD and commercial
Orbel | 610-829-5000
| Easton, PA
EMI/RFI shielding, board level RF shielding, multi-cavity shields, finger
stock, chemical etched metal parts, metal stamping and electroplating services.
| 203-866-5888 | Norwalk, CT
Anechoic chambers, shielded enclosures, reverberation
P & P Technology Ltd
| +44 (0) 1376 550525 | UK
Manufacturer of EMI | RFI shielding gaskets, meshes and
| 800-749-3677 | Minneapolis, MN
Switchmode, power pulse, linear single phase, linear
three phase transformers, common mode chokes, CRT magnetics, antenna, solenoid, armature
Precision Micro Ltd
| +44 121 380 0100 | UK
EMI/RFI shielding solutions, from design to compliance. Precision
manufacturing technologies from Ion beam and electroforming to photo etch and laser cutting.
| 800-875-1093 | Buffalo, NY
Heating elements, filters & screens, encoder discs,
RF shields, recharge grids, stamping, forming, plating, sub assembly, painting, heat
treating, laser services.
| 949-452-0511 | Lake Forest, CA
Gaskets, shielding, line filters.
| 631-231-6400 | Bay Shore, NY
EMI/RFI chassis feedthrough filters.
| +61 3 8739 6700 | Victoria, Australia
Design, fabricate, install and test all types
of R shielded enclosures, from a small bench top model for laboratory use to a large
complex for military vehicle testing. Testing services.
| 631-727-1441 | Manorville, NY
Specializes in the manufacture of EMI shielding, waveguide,
connector, conductive, non-conductive, washer style, co-elastomer gaskets, fluid sealing
products, static and reciprocating seals, and O-rings. Capabilities include die cutting,
molding, laser cutting, extruding, and water jet cut gaskets, along with a wide variety
of stocked sheet and roll goods.
| 800-204-0863 | Rochester, NY
Gaskets, I/O backplane shielding gaskets, BeCu Fingerstock,
conductive envelopes, tapes, laminates.
Limited | 01376 330033 | Braintree Essex UK
Design, manufacture and application
of components and materials for the control of electromagnetic interference EMI and environmental
Silver Cloud Manufacturing
| 856-825-8900 | Millville, NJ
EMI/RFI shielding, ESD protection, custom filters &
lenses, anti reflective surfaces, display protectors, heat shields, membrane switches.
Spira Manufacturing Corporation
| 818-764-8222 | North Hollywood, CA
EMI shielding, gaskets, spiral wrap, honeycomb
TDK | 516-535-2600
| Garden City, NY
Filters, multi-layer ceramic capacitors, inductors, EMC components,
LAN components, ferrite cores, amorphous cores, transformers, magnets, magnet applied
products, piezoeletronic products, delay lines, sensors, power supply, RF components,
RF modules, and more.
| 508-747-0300 | Plymouth, MA
EMI/RFI shielding, precision parts, flexible circuits.
Tusonix | 520-744-0400
| Tucson, AZ
EMI/RFI filters, surface mount EMI filters, variable trimmer capacitors,
filtered terminal blocks, custom EMI filter plate assemblies, ceramic disc capacitors.
West Coast Magnetics
| 800-628-1123 | Stockton, CA
Switch mode, 60 Hz, isolation, base drive, current sense
transformers, RF, power inductors, common mode chokes.
W.L. Gore & Assoc
| 800-311-3060 | Elkton, MD
Coax cables and harnesses, SMT RF grounding pads, EMI
gaskets, thermal interface materials, dielectric materials.