Customized Power Inductors Design by Custom Coils

Power Inductor

Power inductors are important electronics components designed for electrical circuits that experience high voltage and current fluctuations. These devices use DC-to-DC converters to store energy in their magnetic field during the current flow. Power inductors minimize the signal loss and filter electromagnetic interference or EMI noise. Being one of the industry-leading power inductor manufacturers and suppliers, Custom Coils specializing in the design and manufacturing of high current power inductors to support several challenging client applications and equipment.

Our team of experts work closely with clients from different industries to understand their electrical requirements and offer custom power inductors that fulfill their need. We have been delivering superior quality and performance-driven power inductors since 1967.

Power Inductor Offerings

With Switch Mode Power Supply (SMPS) frequencies increasing every year, the demand for power inductors is growing. Thus, we design and manufacture inductors that can be used for SMPS frequencies. Our power inductors are categorized based on the following characteristics:

  • Nominal Inductance
  • DC Resistance
  • Tolerance
  • Maximum Rated Current
  • Case Size/Dimension
  • Shielding
  • Packaging Type

Our power inductors have Nominal Inductance values that can be defined by the customer. Our products have DC Resistance ranging from very small mΩ to very high kΩ. We also provide power supply inductors, SMD (surface mount inductors), and high power inductors, which are designed using to meet the customers specifications and can be wound on our winding machines.

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Applications of Power Inductors

Being one of the reliable power inductor suppliers and manufacturers, Custom Coils had a privilege of collaborating with clients on complex projects. Our high current power inductors are highly recognized for their beneficial features and they are mainly used for the following purposes:

  • Storing energy in DC-to-DC converters
  • Filtering EMI noise in AC inputs
  • Separating signals of different frequencies in electronic filters
  • Used in combination of capacitors to tune circuits such as radio and TV receivers
  • Used in electronic oscillators to generate sinusoidal signals
  • Reactors are types of power inductors used in electrical transmission systems to limit switching currents and fault currents.
  • Chokes are types of power inductors used in various electrical circuits to block high alternating currents, allowing Direct Currents (DC) to pass
  • Surface mount inductors are used to store energy while filtering low loss inductance.


Custom Coils can design and manufacture high-power inductors to meet any complex electronic circuit requirement. Steady performance over years is what differentiates our products from other brands. To know more about power inductors, feel free to contact us on our toll-free number   +1 605.934.2460, or drop us an email at


Custom Coils
PO Box 348
109 Iowa Street
Alcester, SD 57001-0348

Phone No: 605.934.2460
Fax: 605.934.2440

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