Absorbers, Ferrites, Magnetics & Shielding
Manufacturers & Services
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.
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.
Please consider contacting RF
Cafe advertisers first when seeking such services.
Absorber, Magnetics & Shielding Design Data
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
3Gmetalworx, Inc | 3gmetalworx.com
PCB-mounted application-specific RF/EMI shielding enclosures, including true
Adams Magnetic Products | adamsmagnetic.com
| Elmhurst, IL
Ferrite cores & accessories, flexible, ceramic, alnico, Samarium Cobalt magnets, Neodymium
products, magnetic assemblies, and more.
Microwave | aft-microwave.com
+49 7191 9659 0 | Germany
Microwave components including circulators, isolators, waveguide and coaxial
components, phase shifters, ferrites, thin film technology.
Amuneal Manufacturing Corp | amuneal.com
| Philadelphia, PA
EMF & magnetic shielding, metal components & assemblies, sheet metal and machined
components and assemblies.
Arc Technologies | arc-tech.com
978-388-2993 | Amesbury, MA
Multilayer, reticulated, & Lossy foams, EMI absorbers, EMI shielding
gaskets, magnetic absorbers (MAGRAM), radar absorbing structures (RAS), dielectric materials.
Braden Shielding Systems | bradenshielding.com
| Tulsa, OK
Medical enclosures, pyramidal anechoic chambers, shielded doors, Solidcore Modular Systems,
Chomerics | chomerics.com
| Woburn, MA
foil tape, EMI shielding, elastomer EMI gaskets, thermal management.
Coiltech | coiltechinc.com
| Costa Mesa, CA
Coiltech is a leading manufacturer of high quality surface-mount inductors, chokes, and coils.
Coiltronics (now Cooper Bussmann) | cooperet.com/3/Coiltronics.html
636-527-3877 | Ellisville, MO
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 | lehman-inc.com
| Chambersburg, PA
Design and construction of RF shielded anechoic chambers for the commercial and
Cuming Microwave Corporation | cumingmw.com
| 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 printed antennas.
Delta Electronics | deltaww.com
| 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
EAC Shielding | eacshielding.com
| Santa Fe
EMI/RFI Shielding products, EMI/RFI honeycomb panels, EMI shielding air vents, wire mesh,
gaskets, connector gaskets, die cutting, bonding.
Eagle Group Northeast Corp
508-384-9700 | Woonsocket, RI
| RFI & microwave foil shielding,
RF absorbers, injection molding.
Eastern Components |
800-862-1640 | W. Conshohocken, PA
Cores and shielding for electronic
Elna Magnetics | elnamagnetics.com
| 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 magnetic products.
915-590-0795 | El Paso, TX
Custom manufacturer of coils, powerline filters,
signal line filters, EMI filters, low pass filters and inductors.
& Cuming Microwave Products | eccosorb.com
781-961-9600 | Randolph, MA
Eccosorb microwave & RF absorbers,
anechoic chambers. They have a really nice chart available for determining the dielectric constant and
Espey Mfg & Electronics Corp | espey.com
| 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.
ETS-Lindgren | ets-lindgren.com
| Cedar Park, TX
Anechoic chambers, absorbers, antennas, filters, Helmholtz coils, probes, meters, TEM cells, shielded
enclosures, screen rooms, positioners.
Products | fair-rite.com
800-836-0426 | Wallkill, NY
Large toroids, chip beads, chip inductors.
FDK | fdk.co.jp
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.
Ferroxcube | ferroxcube.com
| El Paso, TX
ferrite products & accessories, integrated inductive components, multilayer suppressors & inductors.
Fischer Custom Communications | fischercc.com
| Torrance, CA
TEM cells, 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.
Insul-Fab | insulfab.net
214-956-0055 | Dallas, TX
Custom fabrication of EMI/RFI shielding and gasketing, dielectric insulation,
laminates, foils, tapes, adhesives.
Kemtron | 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
KOA Speer Electronics | koaspeer.com
| Bradford, PA
Resistors, capacitors, 3-terminal EMI/RFI filters, circuit protection, inductors, integrated components.
Laird Technologies | lairdtech.com
Water Gap, PA
EMI shielding, BeCu, fabric over foam, knitted mesh wire, surface mount shields,
LBA Group, Inc | lbagroup.com
| 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
Leader Tech, Inc | leadertechinc.com
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.
Lindgren RF (now ETS-Lindgren) | ets-lindgren.com
| 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.
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
Magnetic Component Engineering
| 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 overhead systems.
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.
| 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 | masach.com
Customized RF shielding, RF shields, RMI solutions, RFI solutions. Fast, high quality, cost effective RF
shields, standard and custom designed.
MAST Technologies |
858-452-1700 | San Diego
Designs manufactures innovative RF absorbers, microwave absorbers, and EMI
shielding materials for integration into military and electronics solutions.
Metglas | metglas.com
| Conway, SC
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
Micrometals | micrometals.com
| 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).
MuShield | mushield.com
| Goffstown, NH
shielding, monitor enclosures, raw materials for low frequency RF shielding up to 50 kHz.
MWT Materials, Inc | mwt-materials.com
RF and Microwave absorbers for the DOD and commercial markets.
Orbel | orbel.com
| Easton, PA
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 | p-p-t.co.uk
+44 (0) 1376 550525
Manufacturer of EMI | RFI shielding gaskets, meshes and vents.
Precision Incorporated | precision-inc.com
| Minneapolis, MN
Switchmode, power pulse, linear single phase, linear three phase transformers, common
mode chokes, CRT magnetics, antenna, solenoid, armature coils.
Precision Micro Ltd | precisionmicro.com
+44 121 380 0100
EMI/RFI shielding solutions, from design to compliance. Precision manufacturing technologies from Ion beam
and electroforming to photo etch and laser cutting.
Precision Photofab | precisionphotofab.com
| Buffalo, NY
Heating elements, filters & screens, encoder discs, RF shields, recharge grids, stamping,
forming, plating, sub assembly, painting, heat treating, laser services.
Premier Magnetics | premiermag.com
| Lake Forest,
Gaskets, shielding, line filters.
RFI Corporation |
631-231-6400 | Bay Shore, NY
EMI/RFI chassis feedthrough filters.
RFI Industries | rfi-ind.com.au
+61 3 8739 6700
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.
SAS Industries | sasindustries.com
| 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.
Solutions Limited | shielding-solutions.com
01376 330033 | Braintree Essex UK
Design, manufacture and application of
components and materials for the control of electromagnetic interference EMI and environmental sealing.
Silver Cloud Manufacturing | silver-cloud.com
| 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 filters.
TDK | tdk.com
| Garden City, NY
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 | tusonix.com
| Tucson, AZ
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.