Absorbers, Ferrites, Magnetics & Shielding
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
Please consider contacting RF Cafe advertisers first when seeking
Absorber, Magnetics & Shielding
My policy is to only list companies that actually manufacture product or offer services related to the page title subject.
Product distributors and sales representatives are not listed (they have their own page). This helps guarantee that each
listing offers a unique product or service. NOTICE: I am no longer adding hyperlinks due to so many companies asking to
be removed because of some issue with Google Statistics. Your best bet is to use a search engine to find company
websites directly. If you are interested in advertising, please visit my
Advertising information page
| 905-738-7973 | Toronto, Ontario, Canada
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
| +49 7191 9659 0 | Germany
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),
Braden Shielding Systems
| 918-624-2888 | Tulsa, OK
Medical enclosures, pyramidal
anechoic chambers, shielded doors, Solidcore Modular
Systems, welded enclosures.
chomerics.com | 781-935-4850
| Woburn, MA
Copper foil tape, EMI shielding, elastomer
EMI gaskets, thermal management.
coiltechinc.com | 714-708-8715
| Costa Mesa, CA
Coiltech is a leading manufacturer
of high quality surface-mount inductors, chokes, and
Coiltronics (now Cooper Bussmann)
cooperet.com/3/Coiltronics.html | 636-527-3877 | Ellisville,
Transformers & inductors for DC-DC & switchmode
applications requiring high frequency magnetics.
Credowan (now 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
cumingmw.com | 800-432-6464 | Avon, MA
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 printed antennas.
| 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,
| 562-926-7742 | Santa Fe Springs, CA
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
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 magnetic
| 915-590-0795 | El Paso, TX
of coils, powerline filters, signal line filters, EMI
filters, low pass filters and inductors.
Emerson & Cuming Microwave Products
eccosorb.com | 781-961-9600 | Randolph, MA
microwave & RF absorbers, anechoic chambers. They
have a really nice chart available for determining the
dielectric constant and loss tangent.
Espey Mfg & Electronics Corp
espey.com | 518-245-4400 | Saratoga Springs, NY
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
absorbers, antennas, filters, Helmholtz coils, probes,
meters, TEM cells, shielded enclosures, screen rooms,
| 800-836-0426 | Wallkill, NY
Large toroids, chip
beads, chip inductors.
fdk.co.jp | 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,
212-268-4020 | New York, NY
Snap-on RFI cable chokes.
ferronics.com | 716-388-1020
| Fairport, NY
Toroids, beads, baluns, multi-hole
ferroxcube.com | 915-599-2616
| El Paso, TX
Soft ferrite products & accessories,
integrated inductive components, multilayer suppressors &
Fischer Custom Communications
fischercc.com | 310-891-0635 | Torrance, CA
EMI filters, Helmholtz coils.
Holland Shielding Systems BV
hollandshielding.com | +31 78 613 13 66 | The Netherlands
RF shielding, Faraday cages, EMI shielding gaskets,
conductive foil tape, conductive glue, conductive paint.
insulfab.net | 214-956-0055
| Dallas, TX
Custom fabrication of EMI/RFI shielding
and gasketing, dielectric insulation, laminates, foils,
kemtron.co.uk | +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
3-terminal EMI/RFI filters, circuit protection, inductors,
| 800-843-4556 | Delaware Water Gap, PA
BeCu, fabric over foam, knitted mesh wire, surface mount
shields, conductive elastomers.
LBA Group, Inc
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
2 Danforth Drive
Easton, PA 18045
|Orbel Corp. is the leading designer and manufacturer of
RF Shielding and EMI/RFI Isolation Products
for printed circuit boards and electronic enclosures.
| • Board Level Shielding
||• EMI Contact Strips and Rings
| • Be. Cu. Finger-Stock Gaskets
||• Metalized Fabric Gaskets
| • Custom and Finger Stock
||• Connector Gaskets
standard and custom board level shielding (BLS) offers unlimited design flexibility for surface-mount and through-hole
specializes in thin gauge Photo
Etched Metal Parts and Precision Metal
Stampings made from a wide variety of material options. We manage every aspect of metal stamping from design,
prototyping, short to medium runs and high volume stamping.
|• Electrical Contacts
• Battery Contacts and Tabs
• Custom ESD/Grounding
• Modified Standards
• Brackets & Washers
• Circuit Board Stiffeners
• Springs • Metal
• Antennas • Lead Frames
Photo Etched Parts
Leader Tech, Inc
| 813-855-6921 | Tampa, FL
shielding products including gasketing that help prevent
electromagnetic or radio frequency interference
(EMI/RFI) on circuit board applications.
Lindgren RF (now ETS-Lindgren)
ets-lindgren.com | 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
mceproducts.com | 800-989-5656 | Torrance, CA
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 overhead systems.
mag-inc.com | 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.com | 888-763-2952
| Saegertown, PA
Electromagnetic Interference | Radio
Frequency Interference (EMI/RFI) Shielding - gaskets,
elastomers, fingerstock and air ventilation
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
| 858-452-1700 | San Diego
Designs manufactures innovative
RF absorbers, microwave absorbers, and EMI shielding
materials for integration into military and electronics
metglas.com | 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
mushield.com | 888-669-3539
| Goffstown, NH
Custom shielding, monitor enclosures,
raw materials for low frequency RF shielding up to 50
MWT Materials, Inc
| 973-472-5161 | Passaic, NJ
RF and Microwave absorbers
for the DOD and commercial markets.
orbel.com | 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 chambers.
P & P Technology Ltd
| +44 (0) 1376 550525 | UK
Manufacturer of EMI |
RFI shielding gaskets, meshes and vents.
| 800-749-3677 | Minneapolis, MN
pulse, linear single phase, linear three phase transformers,
common mode chokes, CRT magnetics, antenna, solenoid,
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
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
631-231-6400 | Bay Shore, NY
EMI/RFI chassis feedthrough
| +61 3 8739 6700 | Victoria, Australia
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
| 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,
Shielding Solutions Limited
| 01376 330033 | Braintree Essex UK
and application of components and materials for the
control of electromagnetic interference EMI and environmental
Silver Cloud Manufacturing
| 856-825-8900 | Millville, NJ
ESD protection, custom filters & lenses, anti reflective
surfaces, display protectors, heat shields, membrane
Spira Manufacturing Corporation
spira-emi.com | 818-764-8222 | North Hollywood, CA
EMI shielding, gaskets, spiral wrap, honeycomb filters.
tdk.com | 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.
tech-etch.com | 508-747-0300
| Plymouth, MA
EMI/RFI shielding, precision parts,
tusonix.com | 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.
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