We’ll manufacture the 400 Hz power transformer or inductor that meets your needs.

Hisonic manufactures a diverse line of 400 Hz power transformers and inductors for many of the world's leading avionics manufacturers. We have an in-house engineering capability with unmatched experience in engineering reliable transformers, inductors, common mode chokes and other magnetic components for 400 Hz power applications. We have engineered and produced a wide range of designs including single phase, 3-phase, and multi-phase (n-phase or polyphase) 400 Hz transformers. Contact us for assistance in locating and/or modifying a design to meet your needs.  

Feature 400 Hz 780X600
Feature 400 Hz Group 780X600
Feature Products 400 Hz Iso1 780X600
Feature Products 400 Hz Iso2 780X600
Feature Products 400 Hz Iso3 780X600

400 Hz Types

Hisonic has extensive experience in manufacturing transformer and inductor products for 400 Hz applications.

  • Single Phase 400 Hz Transformers
  • 3-Phase 400 Hz Transformers
  • N-Phase (also called multi-phase or poly phase) 400 Hz Transformers
  • 400 Hz Chokes
  • 400 Hz Common Mode Chokes


400 Hz transformers and inductors can be manufactured with a variety of terminals for use in your application including:

  • Self-leaded - The magnet wire used for winding is cut to length and tinned for soldering. Insulating sleeving can be added if desired.
  • Lead Set – Insulated wires are soldered to the magnet wire and cut to length and tinned.
  • Surface Mount (SMT) Leads – The coil is wound on a bobbin or set in a carrier or case with leads suitable for surface mount.
  • Chassis mounting – Coil is supplied with brackets for chassis mount. Can be supplied with either lead wires or solder lugs

Let us know your requirements and we can suggest a suitable mounting option.

Case Styles

Hisonic’s 400 Hz transformers have a variety of case options to choose from. These include:

  • Open Un-cased 
  • Potted in Epoxy or Diallyl Case
  • Molded cases
  • Metal can for shielding
  • Special heat sink plate arrangements
  • Multi-coil transformer packages

Our engineering team can help you pick a case style that will work with your size, weight and environmental requirements.