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A toroidal inductor is a type of passive electrical component that stores energy in a magnetic field when electrical current passes through it. It is characterized by its doughnut-shaped core, typically made from ferromagnetic materials such as iron or ferrite, which enhances its inductance and efficiency. The wire is wound around the core in a circular pattern, which helps to minimize electromagnetic interference and improve performance in various applications.
| Core material | Ferrite or iron |
| Inductance range | 1 µH to several hundred mH |
| Wire gauge | AWG 18 to AWG 36 |
| Temperature range | -40°C to +125°C |
| Rated current | Up to 20 A or more |
When selecting a toroidal inductor, consider the required inductance value, current rating, and core material based on your specific application. It's important to specify the desired temperature range and any relevant certifications, such as UL or RoHS compliance. Additionally, provide information on the quantity needed to ensure accurate pricing and availability.
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Toroidal inductors offer lower electromagnetic interference and higher efficiency compared to other inductor shapes.
Yes, they are suitable for high-frequency applications due to their design and core material.
Inductance is affected by the core material, number of turns, and the geometry of the winding.
Calculate based on the circuit requirements, frequency, and load conditions.
Yes, many manufacturers offer custom sizes and specifications.
With proper usage, they can last for many years, often exceeding the lifespan of other components.