Here are some of the most prominent manufacturers of transformers and baluns for both
RF applications and AC power transformation.

Abracon | 949-546-8000
| Rancho Santa Margarita, CA Ceramic, SAW, dielectric filters, VCXO, TCXO, clock oscillators,
crystal resonators, magnetics, transformers, chokes, inductors.
Advanced Components
Industries | 800-841-0994 | Torrance, CA Space-limiting and height-limiting
encapsulated transformers including hte Miniature Series, the Space Limiting SPK Series
and the Height Limiting SPF Series.
API Delevan
| 716-652-3600 | East Aurora, NY RF, power, military & aerospace inductors,
EMI/RFI suppressors, transformers, common mode power chokes.
Bicron Electronics Co
| 800-624-2766 | Canaan, CT DC Tubular, open frame, linear and rotary solenoids, toroidal
power and isolation transformers up to 10,000VA, high performance transformers and components,
current sensors and monitors.
C&D Technologies
| 800-543-8630 | Blue Bell, PA Batteries, chargers, DC-DC converters, inductors, power
supplies, power board panels, transformers.
Central Technologies
| 800-684-5322 | Irvine, CA Manufacturer of passive and discrete semiconductor components
such as inductors, transformers, DC/DC converters, toroids, beads, resistors, varistors,
antennas, etc. Offering over 350 products, free samples, engineering services, design
kits, and customs capabilities. ISO9001:2000 certified.
Coilcraft
| 800-322-2645 | Cary, IL RF, power inductors, EMI/RFI filter products, xDSL magnetics,
transformers.
Datatronic Distribution
Inc. | 888-889-5391 | Romoland, CA Switch mode power supply transformers &
inductors, RF magnetics, common mode chokes, gate drive, current sense, pulse, wideband
RF, telecommunications transformers, LAN filters.
Electro-Technik
| 727-536-7861 | Largo, FL Resistors, transformers and custom magnetic devices, microwave
terminators and attenuators, and more.
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 300 kV.
EXA E&C Inc.
| +0082-2-3289-5164 | Seoul, Korea TV circuit kits, high voltage transformers, back
light inverters.
Flex-Core
| 614-889-6152 | Columbus, OH Current transformers, transducers, signal converters &
conditioners, meters and monitors, selector switches, analog, digital meters, shunts
and shunt-isolators.
Frontier USA
| 805-522-9998 | Simi Valley, CA RF inductors, power chokes, common mode filters,
multilayer chip inductors, SM ferrite beads.
Hammond Manufacturing
| 716-651-0086 | Cheektowaga, NY Electrical enclosures, racks, small enclosures, electronic
transformers, outlet strips.
Innovative Power Products
(IPP) | 631-563-0088 | Holbrook, New York RF & microwave high power,
broadband couplers, combiners, baluns, resistors, terminations and attenuators. Product
integration, custom configurations, custom resistor assemblies, contract manufacturing,
engineering design.
Marcus Transformer
| 514-935-3543 | Montreal, Quebec Lighting and distribution transformers that significantly
reduce power consumption. Our patented WATT+PLUSTM technology, which incorporates only
pure electrolytic copper coil windings, is recognized as the new standard of power for
the electrical industry.
Mitchell Electronics
| 914-699-3800 | Mt. Vernon, NY Transformers, inductors, current sensors.
Pico Electronics
| 800-431-1064 | Pelham, NY Transformers, inductors, DC-DC converters, AC-DC power
supplies, power factor corrected modules.
PowerVolt
| 888-797-8658 | Addison, IL Power transformers, linear regulated international, switch
mode universal, StepperPower, unregulated open frame, unregulated enclosed case, AC/AC,
AC/DC wall plug-in power supplies.
Prem Magnetics
| 815-385-2700 | McHenry, IL Power & telephony transformers, inductors, and CRT
magnetics.
Pulse Engineering
| 858-674-8100 | San Diego, CA Power transformers, low profile plug-in, channel frame
mount, surface mount inductors, filters, directional couplers, RF splitters/combiners.
Radius Power
| 714-289-0055 | Orange, CA EMI/EMC filters, power supplies, transformers, inductors.
Renco Electronics
| 321-637-1000 | Rockledge, FL Bobbins, transformers, toroids, power chokes, inductors,
surface mount.
RF Power Systems
| 623-376-7720 | Peoria, AZ Impedance matching transformers, splitters and combiners
for RF amplifiers. We fill orders of all sizes using the finest materials and workmanship.
We can also fill special orders to customer specifications.
Signal Transformer
(Bel Fuse) | 866-239-5777 | Jersey City, NJ Standard and custom power
transformers for worldwide applications.
Sprague Goodman
| 516-334-8700 | Westbury, NY Trimmer capacitors, metalized, SMT Chip, leaded inductors,
transformers, microwave tuning elements, varactor diodes, tuning tools.
Standex Electronics
| 513-871-3777 | Cincinnati, OH Cable, PCB, terminal blocks connectors, transformers,
coils, antennas, current sense coils, hermetic & magnetic reed switches.
Superior Electric
| 800-787-3532 | Bristol, CT Motion & voltage control products, adjustable speed
drives.
Tamura Corp
| 800-472-6624 | Temecula, CA DC-AC backlight inverters, DC-DC converters, EMI/RFI
filters and coils, inductors, power supplies, wall plug-ins, telecom/datacom transformers.
Toroid Corporation of Maryland
| 888-286-7643 | Salisbury, MD ISOBOX transformers/medical isolation, toroidal isolation,
rectifier, balanced, current sensing, standard lamp, industrial control transformers,
DC filter chokes.
TTE | 800-776-7614
| Los Angeles, CA Bandpass, lowpass, highpass filters, diplexers, multiplexers, cases,
balun, isolation & matching transformers.
West Coast Magnetics
| 800-628-1123 | Stockton, CA Switch mode, 60 Hz, isolation, base drive, current sense
transformers, RF, power inductors, common mode chokes.
XFMRS | 317-834-1066
| Camby, IN Transformers, inductors, inverters, EMI suppressors, wideband RF transformers
up to 1 GHz.
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