Toroidal Transformer General Design Specifications

Transformer Product Specifications:

  • Core Material: Ferrite, Powered Iron, Silicon Steel, Nickel Steel, MPP, High Flux Kool Mu, Metglass
  • Diameter: 0.25″ through 10″
  • Height: 0.5″ through 3.5″
  • Wire Size: #10 through #42
  • Various termination and mounting options
  • Built with UL Recognized Insulation Materials
  • Specialized finishing available

Transformer Applications:

  • Power transformers
  • Isolation transformers
  • Current transformers
  • Pulse transformers
  • Chokes/Inductors
  • Magnetic Amplifier Transformers
  • Inverter/Converter Transformers
  • Power Supply Transformers
  • A wide range of end-user applications including: aerospace and defense, power conditioning, motor and industrial controls, medical, computers, power supplies.

Transformer Advantages:

  • Smaller sizes and lighter weights than E-I transformers
  • Flexible dimensions and mounting configurations
  • Improved efficiency, reduced power consumption
  • Minimized audible noise
  • Minimized flux leakage
  • Low magnetic field interference


  • Samples: 1-2 weeks on average
  • Production: 4-6 weeks
  • Flexible Production Schedule

Customer Requirements:

  • All units engineered to customer specifications or requirements
  • Prompt Engineering and Applications Support


  • Competitive pricing
  • Manufactured quantities from 1 to required quantity
  • Back to Toroidal Transformer Main Page
If you need assistance with your design, please contact Butler Winding and ask for Engineering.