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Manufacturers & Principals List

At ATM Mid-Atlantic we provide application engineering and technical sales support in Maryland, Virginia, and Washington, D.C. Find our manufacturers and principals for RF, IF, Microwave, and Millimeter Wave components and systems below. 


Mini-Circuits offers a wide range of IF/RF Components:

  • IF / RF Components
  • Mixers
  • Power Splitters / Combiners
  • Couplers
  • Filters
  • Amplifiers
  • Transformers
  • Attenuators
  • RF Switches
  • Phase Detectors
  • Limiters
  • VCO’s
  • I&Q & PSK Modulators / Demodulators

AGC Multi Material America, Inc.

AGC Multi Material America, Inc. develops and manufactures high speed digital and RF/microwave printed circuit board materials for the automotive, telecommunications and internet infrastructure, enterprise, and military/aerospace markets. Specialty materials also focus on high speed flexible circuits and high density interconnect (HDI) with stacked microvias.

Agile Calibration

Agile Calibration offers expert on-site calibration, is ISO compliant, and is led by an expert in metrology. Their scope of capabilities includes:

  • DC & Low Frequency Meters
  • Signal Generators
  • Microwave Spectrum Analyzers
  • Signal Sources
  • Laser Sources
  • Wavelength Meters
  • Power Supplies
  • Oscilloscopes
  • Network Analyzers
  • Attenuators and Optical Technologies
  • Power Meters
  • And more

Alltest Instruments

Alltest Instruments provides the test and measurement equipment you need at the price you want. Alltest carries the world’s largest selection of used/refurbished benchtop test and measurement equipment. They offer:

  • Used and refurbished test equipment
  • NIST traceable calibration
  • Extended warranties available
  • Service and repairs
  • Lease, rent, or buy
  • Exchange unused, not working equipment for cash or credit

Amphenol RF

Amphenol RF is the world’s largest manufacturer of coaxial connectors for use in radio frequency, microwave, and data transmission system applications.

They offer both Standard & Custom RF and Microwave Connectors:

  • SMA
  • SMB
  • BNC
  • TNC
  • MCX
  • MMCX
  • Type N
  • Type F
  • Type G
  • 7/16
  • 1.0/2.3
  • 1.6/5.6
  • C
  • HN
  • SC
  • BMA
  • SMP
  • SMPM


Coilcraft is a leading global supplier of magnetic components including high performance RF chip inductors, power magnetics and filters. In addition to a large selection of standard components, Coilcraft also designs and builds custom magnetics to fit a customer’s exact electrical requirements. They offer:

  • Inductors
  • Power Magnetics
  • Filters
  • Standard and Custom Designs
  • Mil & Aerospace Screening
  • Free Evaluation Samples
  • Time-saving Web Design Tools

Leader Tech

Leader Tech is a leading supplier of EMI Shielding products including:

  • Circuit Board Shielding
    • S/M Shields
    • Tech Clip
    • Standard CBS
    • Modified CBS
    • Custom Shielding
    • Slot-Lok Shields
  • Enclosure Shielding
    • Fabric Shielding Gaskets
    • BeCu Fingerstock
    • Conductive Elastomers
    • Conductive Foam
    • TechSIL Oriented Wire
    • TechMESH Knitted Wire
    • Absorbers
    • TechMESH Tapes
    • Connector Gasket
  • Cable Ferrites
    • Cable Snap Ferrite
    • Cable Bundle Clamp
    • Sleeve Snap Ferrite
    • Solid Bead and Toroid Ferrite
    • Flat Cable Clamp Ferrite
    • Solid Bar Ferrite
    • Ferrite Tiles
    • Saddle Bead Ferrite
  • Thermal Products
    • Thermal Gap Fillers
    • Insulators
    • Tape
    • Graphite
    • Phase Change
    • Grease

Best in Class High Isolation Multiport RF Interconnects – AFI, HD-AFI, DART AFIs, and VITA-67.

M2 Global Technology Ltd.

M2 Global Technology Ltd. is a premier worldwide supplier of microwave products and precision manufacturing services that has been serving the defense, telecommunications, and aerospace industries for over 30 years. Their products include:

  • RF/Microwave Circulators and Isolators
  • Wave Guide & Coaxial Isoadaptors
  • Waveguide to Coax Adaptors
  • Dir. Couplers
  • Straight and Twisted Sections
  • Drop-in
  • Coaxial Dividers (to 16 way)
  • Waveguide Terminations
  • Mitered Bends


Retronix has a unique skill set and provides processes that improve component reliability, solve CTE issues, salvage and refurbish expensive ICs, and improve circuit reliability. They offer:

  • Automated retinning / alloy conversion
  • Laser reballing
  • QFP and BGA recovery
  • IC/PCB Services
  • PCB rework or repair


For more than 30 years, Thunderline-Z has been recognized as the world’s premier manufacturer of RF and DC feedthrus and microwave packages. They offer:

  • Surface Mount Bell Pins
  • Hermetic Electronic Packages
  • RT-500 OHM Feedthroughs
  • Multi Pin Feedthrough Array
  • Capacitor – Filter Feedthroughs
  • Initiator Assemblies
  • Stamped/Coined Microelectronic Packages
  • DC Feedthroughs
  • Laser Lidding – Component Installation

Wall Industries

Wall Industries has been designing and manufacturing power products in the US since 1961. By working with offshore partners, Wall has been able to manufacture and market a full line of DC/DC converters and AC/DC power supplies with an emphasis on modified standard and customized power solutions made in the US. They offer:

  • DC/DC Power Converters
    • Encapsulated
    • PC Board Mount
    • Surface Mount
    • Chassis Mount
    • Air-Ventilated Enclosed
    • Open Frame Types
  • AC/DC Power Supplies
    • Open Frame
    • Air-Ventilated Enclosed
    • U-Chassis
    • Encapsulated
    • DIN Rail
    • Enclosed with Fan
    • Wall Mount
    • Desktop Types
  • Industrial
    • -40~70°C Operating Adapters
    • PCB Mount
  • Military
  • Medical
  • Lighting
  • Level VI
  • Railway
  • Robotics
  • Vehicle Power