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+ Magnetics Designed To Meet Your Unique, High-Risk Specifications

Whether you need a custom solution or a simple build-to-print, we have the design skills and manufacturing know-how to turn your demanding specification into an engineered component that works right, the first time. Our reliable, innovative designs are all backed with a 5-year warranty.


Need a bit more info before sending us your specs?  Learn more about our Capabilities or the Importance of Identifying Harmonic Content.

Custom Inductors, Reactors & Chokes Capabilities at Electronic Craftsmen

  • Inductance: uH to H

  • Currents to 1100A nominal, AC or DC

  • AC Ripple Current and Harmonics accommodated to specification

  • Working Voltage up to 12kV (depending on frequency); multiple stages possible for higher outputs

  • Frequency: DC to 500kHz (typical)

  • Temperature Class to 220C (155C / Class F typical)

  • Weight: 0.06 oz / 1g to 550 lbs / 250kg

  • Multiple taps as required

  • Dielectric Strength (hipot) to 30kVac or 20kVdc

  • Parts can be vacuum varnished or molded with a variety of hard or soft encapsulant materials with thermal conductivity.

  • Wire sizes from 1-45 AWG or Copper Foil to 0.050in thick (in multiple layers for higher current); Litz wire for higher frequency

  • Regulation to specification

  • Manufactured using all known state-of-the-art magnetic core materials, including but not limited to electrical grade steel laminations, ferrites & powdered iron, nickel-iron alloy, iron amorphous metal strip-wound cores, nanocrystalline cores and small toroids.

  • Antifungal and non-nutrient coatings available

  • Corrosion resistant coatings & platings available

  • Standard or custom terminations & leads

  • Mounting Configurations: pcb-mount (horizontal or vertical), custom or standard brackets or stacked configurations

  • Designed to meet CSA & UL (safety) or MIL PRF 27 (aerospace / military) requirements upon request

  • MIL PRF 27 Grade 5 & 6 encapsulation available

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3 Phase Inductors


3 Phase Inductors

Our custom three-phase inductors are used in applications including aviation, power conditioning, renewable energy power conversion and high-power battery charging, to name a few.


Designs may incorporate foil and high-temperature windings, strip-wound amorphous metal, ferrite or high-grade steel cores. Dimensions and mountings are tailored to suit your specific need. Inductors can also be incorporated into the primary winding of a transformer to save both cost and space.



High Frequency & Switch Mode Inductors


High Frequency & Switch Mode Inductors

Understanding SMPS fundamentals is essential when optimizing a inductor design for smaller size, cooler operation and lower losses. We've been designing and building custom Switch Mode Power Supply magnetics for over 25 years. From design concept to delivery, you can rely on our expertise to help you minimize your risk and achieve a high performance product.



DC & AC Inductors, Chokes & Reactors


DC & AC Inductors, Chokes & Reactors

We design and build our inductors and chokes with state-of-the-art materials including powdered metals, ferrites, amorphous metals and silicon & nickel iron materials. In-house gapping capability allows us to meet specific inductance specifications and our collaborative approach to design allows us to deliver applications with results in optimal performance in the most efficient package.



Aviation & 400Hz Inductors


Aviation & 400Hz Inductors

We build custom applications for many industries including the ones with tough, demanding Aviation and Marine environments. We know special consideration must be given to vibration, moisture, weight, contamination and qualification. Unique winding configurations, high-efficiency cores, high-strength and non-nutrient encapsulants.


That's why we work collaboratively with you and your technical personnel to to develop the optimal solution for your complex requirement.