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Your challenges are unique.

So are our solutions.


We are Electronic Craftsmen Corporation, your custom magnetics solutions partner since 1956.


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We are Electronic Craftsmen Corporation, your custom magnetics solutions partner since 1956.


We are known for our innovation and high-quality specialty transformers, inductors, and other custom parts for power electronics applications. We service diverse industries, including aerospace, communications, and green technologies, collaborating closely with customers in Waterloo Region and beyond. We supply and deliver superior custom magnetics solutions for evolving technological challenges.


Electronic Craftsmen Corporation is an AS9100 & ISO9001 Registered company.

Our Areas of Expertise


Our team loves a design challenge. We can provide custom-made products that conform to most market specifications, including the ability to replicate a wide range of catalogue items. Our design database includes more than 10,000 products to date.


From encapsulation processes, in house ferrite grinding, winding, coil assembly, and more, we create exciting custom products and solutions for our clients across various industries, right here in our  plant.


Explore our full range of services below.

+ Encapsulation (Varnish, Casting & Molding) Processes

"Satisfying demanding environmental and electrical requirements"


  • Vacuum & pressure impregnation for HV applications
    • Chambers up to 24 inches
    • Vacuum Levels to 100 mTorr
    • Many Chambers fully automated with controls to ensure precision vacuum
  • MIL PRF 27 Grade 5 & 6 aviation and military specifications
  • Custom molds or cups
  • Diverse variety of sealants including Anti-fungal & non-nutrient materials
  • Silicones and one or two part epoxies



vacuum chamber


+ In-House Ferrite Core Grinding


"Flexibility and versatility to quickly meet critical inductance specifications."


  • Tolerances to 0.001in

  • Unlimited applications including flyback transformers, step-gap transformers and inductor gaps

  • Eliminates time and cost of sending out to external sources or purchasing standard gapped cores







Core Grinding Machine



+ J-STD-001 Soldering


"Our operators are trained to execute J-STD-001 soldering operations"


  • Detailed standard practices and work instructions

  • RoHS or Leaded solders

  • High current brazing








Hands soldering wires

+ On-Site Machine Shop

"Reduced cycle time on prototyping and custom-designed mechanical assemblies."


  • In-house fabrication of custom inspection fixtures and production tooling

  • Development of custom molds for encapsulation

  • Short runs of brackets, terminals and other custom materials for fast production of prototype





machine shop equipment


+ Automated Production Testing Equipment


"State-of-the-art Voltech transformer testers provide a fast, reliable and flexible test solution."


  • Tolerances to .05%

  • Unlimited testing capabilities for transformers.









Person working on quality test equipment


+ Thermal Cycling Chamber


"Advanced testing capability to verify performance under extreme environmental conditions."


  • 8 cu. ft. with hot-cold and humidity cycling

  • Range from -73C to +190C

  • Cascading cooling compressors with LN2 boost for accelerated performance

  • Dual plotting for both temperature and humidity









Thermal cycling chamber


+ Corona Test & Measurement


"Advanced PC based, AC Partial Discharge test set"


  • 0-20KVac @ 100mA, 60Hz

  • Detects partial discharge up to 2 pC

  • Chamber Size: 17”W x 30”D x 30”H (8.85 cu ft)

  • Omicron MPD500 Digital Detector











person working with a corona test machine


+ State of the Art Winding


  • Bench top winding machines (Ruff GmbH) for high precision linear winding applications

  • CNC controlled traverse, electronically controlled for precise control of tension for guaranteed repeatability

  • Pitch accuracy of 0.00004”

  • Electronically stored winding programs

  • Perfect-layer coils, self-supported coils and edge wound coils











winding machine


+ Multiple Winding Styles


"Custom Magnetics require flexibility in Winding"


  • Bobbin Winding

  • Toroid Winding

  • Stick Winding

  • Unit Winding

  • Layer Supported Winding

  • Operator Guided Winding

  • Heavy Winding including rectangular wire and Foil to 22” wide






hands putting wire on a part


+ Offshore Partnerships


Our approach to utilizing partner vendors is centered on transparency and convenience for our customers. Typically, all production parts undergo rigorous testing at our Waterloo, Ontario facility before delivery to ensure 100% conformance. However, when it makes sense for higher volumes and cost reduction, we have established, longstanding relationships with trusted vendors in China, Taiwan, and India. These partnerships, some spanning over a decade, allow us to select the most suitable manufacturer based on part parameters. While we prioritize quality and visibility, we can also facilitate direct drop-shipment to customers' off-shore facilities when necessary, although this may involve additional quality assurance measures.






plane flying