Custom Coils

Custom Coils specializes in the designing and manufacturing of commercial and industry-grade transformers, inductors, and various magnetic components. The company is ISO 9001:2015 certified and adheres to RoHS compliance.

Manufacturer of Components

Custom Coils specializes in the designing and manufacturing of commercial and industry-grade transformers, inductors, and various magnetic components. The company is ISO 9001:2015 certified and adheres to RoHS compliance.

Custom Coils Serves as a Leading Source of Value-Driven Custom Magnetics  

Custom Coils is a leading manufacturer of transformers, inductors, and specialty magnetic components in the USA. Located in Alcester, South Dakota, the company owns a large and well-equipped facility of 17,000 sq. ft. where the conceptualization, designing, and manufacturing is conducted. Advanced manufacturing capabilities have helped the company emerge as a proven leader in the magnetics industry. Being an ISO 9001:2015 manufacturer, the company values quality and performance the most.

Product Offerings of Custom Coils

Custom Coils specializes in the design and manufacturing of the following types of transformers 

  • High Voltage Transformers
  • Switchmode Transformers
  • Flyback Transformers
  • Trigger Pulse Transformers
  • Step up/down Transformers
  • Power Transformers
  • Toroidal Transformers
  • Custom Transformers
  • Control Transformers
  • Inverter Transformers
  • Low Profile Transformers
  • Ferrite Transformers
  • Pulse Transformers
  • Single Phase Transformers
  • Specialty Transformers
  • Isolation Transformers
  • Surface Mount Transformers
  • Antenna Air Coils
  • Down Hole Applications
  • DC Igniters
  • High Current Inductors
  • Toroidal Inductors
  • Surface Mount Inductors
  • Ferrite Inductors
  • Power Inductors

In addition to the transformers, the company also provides the following magnetic components:

  • Antennas and Air Coils: The Company provides these coils in a wide variety of shapes, sizes, and styles. These antennas and air coils feature self-support coils, high turns count, and fine gauge wires.
  • DC Igniters: Custom Coils specializes in the design and manufacturing of 12V DC igniters. These igniters are well-known for their special features such as internal reverse polarity protection, internal transient voltage protection, internal midpoint ground, etc.
  • Downhole Applications: Downhole magnetics is one of the specializations of Custom Coils. Most of the downhole magnetics are designed for temperatures 200 °C and 220 °C, whereas some coils are also designed for 240 °C.    
  • High Current Inductors: These inductors are designed for low voltage, high current power supplies. The current ratings for these high current inductors are above 100 Amps.
  • Hydrogen Coils: The hydrogen generator coils provided by the company features 2000 turns of 23 AWG magnet wire, which are neatly wound around a ferrite toroid core. Special variations of these coils are also provided.
  • Toroidal Inductors: Designed to protect and support the equipment from Electromagnetic Interference (EMI), these inductors are widely utilized by several critical applications. Customized designs are also provided on the basis of specifications including tolerance, current rating, DC resistance, etc.
  • Air Core Inductors: Also known as air core coils, these non-magnetic inductors are used in commercial and industrial applications with low inductance and high-frequency requirements.  
  • Ferrite Inductors: Capable of meeting a wide range of inductance values, these magnetic devices are available in a variety of ferrite geometries. These inductors are used in both – high and low-frequency applications.   
  • Power Inductors: These devices are designed for electrical circuits, which is regularly subjected to high current and voltage fluctuations without saturation. Power inductors can minimize the loss of signal in a system.
  • Surface Mount Inductors: Regularly used in fluctuating power circuits to filter EMI currents with minimal inductance loss, these devices are majorly used in DC-to-DC and AC-to-DC conductors.

Services Offered by Custom Coils

The Company provides various types of services such as these:

  • Winding Services
  • Assisted Design Services
  • Custom Prototyping
  • Custom Test Suite Creation
  • Through-hole PCB Assembly
  • Reverse Engineering
  • Custom Winding
  • Component Assembly
  • Transformer Lamination
  • Molding and Encapsulation

Applications of Transformers

Custom Coils regularly designs inductors and transformers for the following applications:

  • Military Targeting Lasers
  • Biomedical Lasers
  • Laser Measuring Equipment
  • Spark Switches
  • Laser Flashtubes
  • Industrial Cutting Lasers
  • Xenon Lighting and Flash Tubes
  • Camera Flashes
  • Igniters
  • Stun Gun/Shockers
  • Warehouse Automation

Custom Coils has earned a reputation in the industry for delivering the highest quality products in standard and custom designs. The product engineers at the company work with clients to understand their requirements, and are committed to employing the proven technologies, and the highest quality materials during the manufacturing. 

Custom Coils Postings

26 products »

Inverter Transformer

Voltage fed inverter transformers are designed to support various electronic applications. These are electronic transformers used to convert power from Direct Current (DC) to Alternate Current (AC). Custom Coils provides inverting transformers, wh...

Assembly Services

Inverter Transformer

Power Inductors

Custom Coils can design and manufacture power inductors to meet any complex electronic circuit requirement. Steady performance over years is what differentiates our products from other brands.  Applications of Power Inducto...

Assembly Services

Power Inductors

Surface Mount Inductors

We can design compact sized and durable power inductors for applications ranging from power converters to power supplies. Our inductors are regularly used in energy storage devices, DC-DC converters, and input as well as output filtering devices.<...

Assembly Services

Surface Mount Inductors

Air Core Inductors

We can design our air core coils in a variety of lengths, shapes, and sizes. Customers can see our range of dimensions in the list below. Length up to 4” Outer Diameter up to 8” Inner Diameter up...

Assembly Services

Air Core Inductors

Toroidal Inductors

At Custom Coils, we design toroidal inductors with the capability to surpass the performance of industrial air coil inductors. Our inductors can be designed to support and protect equipment from Electromagnetic Interference (EMI). Desir...

Assembly Services

Toroidal Inductors

Surface Mount Transformers

At Custom Coils, we design and manufacture surface mount transformers. Our transformers are used for a variety of applications, such as power supply and power conversion in electronic devices. Surface Mount Transformers Application -

Pick & Place

Surface Mount Transformers

Isolation Transformers

An isolation transformer is used to transfer electrical power from a source of Alternating Current (AC) (such as mains power) to another component or circuit. While doing this, the transformer also isolates the internal circuitry from the mains po...

Assembly Services

Isolation Transformers

Specialty Transformers

The art of designing specialty power transformers is predicated on the ability to wind different bobbins and forms that support the geometry of the core design. Over the decades, Custom Coils has acquired winding equipment to support winding almos...

Assembly Services

Specialty Transformers

Single Phase Power Transformers

Single phase power transformers are designed to step up or step down the power supplied from the source. This is performed such that the power levels will not saturate the selected core and will be reliable for years of commercial service. ...

Assembly Services

Single Phase Power Transformers

Pulse Transformers

Pulse Transformers - Benefits of Custom Pulse Transformers as given below: Vacuum potting Grounded shielding High voltage resistance Partial discharge effects Wide selection...

Assembly Services

Pulse Transformers

See all products from Custom Coils »

1 news release »

New Winder Added

Sep 04, 2017 | New Winder Added

FPC* - Fluid Pressure Control - Dispensing Pump

Facility Closure