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What is a Toroid Inductor?

A toroid inductor, used in electronic circuits, is an insulated coil that is wire wound on a ring-shaped form which is made of powdered iron, ferrite or another material. A toroid inductor is mostly used at low frequencies where large inductances are required. Toroid inductors have more inductance per turn, and can carry more current, than solenoids with a core of similar material and size.

Types of Toroid Inductors

There are many different kinds of toroid inductors and at Future Electronics we stock many of the most common types categorized by Case Size/Dimension, Current Rating, Nominal Inductance, DC Resistance, Packaging type and Tolerance. The parametric filters on our website can help refine your search results depending on the required specifications.

The most common sizes for DC Resistance are 5 mΩ, 19 mΩ, 20 mΩ, 22 mΩ, 50 mΩ, 55 mΩ and 550 mΩ. Nominal Inductance can be between 10 µH and 920 µH, with the most common toroid inductors having a Nominal Inductance of 25 µH, 28 µH, 50 µH, 51 µH, 75 µH and 100 µH.

Toroid Inductors from Future Electronics

Future Electronics has a full selection of toroid inductors from several manufacturers that can be used as a toroidal coil, common mode inductors, smt inductors or for any circuit that might require toroid coils. Simply choose from the toroid inductor technical attributes below and your search results will quickly be narrowed to match your specific toroid inductor application needs.

If you have a preferred brand, we deal with several manufacturers such as Cooper Bussmann, Delevan, Epcos, Triad Magnetics or Vishay as manufacturers. You can easily refine your toroid inductor product search results by clicking your preferred toroid inductor brand below from our list of manufacturers.

Applications for Toroid Inductors:

Toroid inductors are used in medical devices, telecommunications, musical instruments, industrial controls, refrigeration equipment, ballasts, electronic clutches, electronic brakes, in the aerospace & nuclear fields, in air conditioner equipment and in amplifiers. Other applications include noise filtering for switching regulators, power supplies, power amplifiers and triac control circuits.

Choosing the Right Toroid Inductor:

When you are looking for the right toroid inductors, with the FutureElectronics.com parametric search, you can filter the results by various attributes: by Tolerance (± 50 %, ± 10 %,…), Current Rating (from 5.1 mA to 16 A) and Nominal Inductance (up to 920 µH) to name a few. You will be able to find the right toroid inductors from several manufacturers that can be used as common mode inductors, a toroidal coil, smt inductors or for circuits that may require toroid coils.

Toroid Inductors in Production Ready Packaging or R&D Quantities

If the quantity of toroid inductors required is less than a full reel, we offer customers many of our products in tube, tray or individual quantities that will avoid unneeded surplus.

In addition, Future Electronics offers clients a unique bonded inventory program that is designed to eliminate potential problems that may arise from an unpredictable supply of products containing raw metals and products with erratic or long lead times. Talk with your nearest Future Electronics branch and find out more on how you and your company can avoid possible shortages.




Featured Toroid Inductor Products


Manufacturer Part Number Description
Cooper Bussmann CMS1-12-R CMS Series 131 uH 1.15 A 100 mOhm SMT Common Mode Inductor
Cooper Bussmann CMS1-8-R CSM SERIES 51.2 UH 2.2 A SMD COMMON MODE INDUCTOR
Cooper Bussmann CMS1-7-R Common Mode Inductor
Cooper Bussmann CMT4-6-R CMT Series 0.53 uH 6.5 A 13 mOhm Through Hole Common Mode Inductor
Cooper Bussmann CMS1-14-R Common Mode Inductor, Surface Mount
Cooper Bussmann CMS2-1-R CSM2 Series 25 uH 5.35 A 5 mOhm SMT Common Mode Inductor
Cooper Bussmann CMS2-2-R CMS Series 40 uH 4.4 A 8 mOhm SMT Common Mode Inductor
Cooper Bussmann CMT3-6-R CMT series 530UH 6.5A Thru Hole Inductor
Cooper Bussmann CMS2-7-R CMS Series 270 uH 1.6 A 60 mOhm SMT Common Mode Inductor
Cooper Bussmann CMS2-4-R Common Mode Inductor, Surface Mount
Cooper Bussmann CMS3-2-R CMS Series 45 uH 5.1 A 6 mOhm SMT Common Mode Inductor
Cooper Bussmann CMS3-3-R CMS Series 64 uH 4.7 A 7 mOhm SMT Common Mode Inductor
Delevan HCT-371/R250 HCT series 1.25 uH 25 % 2.5 mOhm 17.4 A High Current Toroidal Inductor
Delevan 4501-114M/B100 4501 Series 10 uH 25 % 2.50 A Shielded SMT Power Toroid Inductor
Delevan 1944R-14M Molded Unshielded RF Coil - RoHS Through Hole RF Inductor, 1.2uH at 20%, Q Min:
Delevan HCT-371 HCT series 1.25 uH 25 % 2.5 mOhm 17.4 A High Current Toroidal Inductor
Delevan PT150R-1500HM/B100 PT150R Series 150 uH 10% 7.7 A SMT Power Toroid
Delevan PTHF100-50/B100 PTHF Series 100 uH 10% 3.14 A Vertical Mount Toroidal Choke
Delevan PTHF100R-50H/B100 PTHF Series 100 uH 10% 3.14 A Vertical Mount Toroidal Choke
Delevan PTHF25R-121H/B100 PTHF Series 25 uH 6.34 A Horizontal Mount Toroidal Power Choke
Epcos B82789C513N2 B82789C Series 51 uH 550 mOhm 250 mA Data and Signal line Choke (5.2 x 5.2 mm)
Triad Magnetics RC-7-B Switchmode/High Frequencey Rod Core Inductor
Triad Magnetics CSE187L Current Sense / Low Frequency Transformer
Vishay IHA305BA IHA Series 100 uH ±10 % 0.07 Ohm 4.2 A High Current Axial Filter Inductor
Vishay IH03EB500K Horizontal ± 10 % 50 uH 5.6 A Radial Leaded Filter Inductor

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