What is another name for an inductor is a coil?
2026-04-06
What is Another Name for an Inductor? Is It Just a Coil?
When you start learning electronics, you’ll often hear two words used interchangeably: inductor and coil. This leads to a common question: What is another name for an inductor? Is an inductor simply called a coil?
In short: Yes — coil is the most common and widely used alternative name for an inductor.
But the two terms are not exactly identical, and understanding their relationship will help you communicate clearly with engineers, manufacturers, and suppliers around the world.
In this blog, we explain why an inductor is often called a coil, what other names are used, and when to use each term.
Why is an inductor also called a coil?
An inductor gets its most popular nickname — coil — from its physical structure.
Nearly all inductors are made by winding insulated wire into loops, spirals, or helices. This wound structure is called a coil. Because the coil shape is what creates inductance, people began referring to the entire component simply as a coil.
In many industries — especially automotive, RFID, wireless charging, and industrial electronics — engineers and technicians say “coil” instead of “inductor” as the standard term.
Examples:
- RFID antenna coil
- NFC coil
- Wireless charging coil
- Bobbin coil / winding coil
- Filter coil / choke coil
So whenever you hear “coil” in an electronic context, it almost always means an inductor.
Other names for an inductor
Beyond “coil,” inductors go by several other names depending on their design and use:
1. Choke
A choke is an inductor designed specifically to block high-frequency noise while allowing DC or low-frequency current to pass.
Common types:
- Power choke
- RF choke
- Common-mode choke
2. Reactor
Used in high-power industrial systems, such as:
- Motor reactors
- Power factor reactors
- Filter reactors
3. Winding
In transformers, solenoids, and custom magnetic components, inductors are often called windings.
4. Inductance coil
A more formal technical name, often used in datasheets and engineering documents.
5. Magnetic coil
Used in wireless systems, sensors, and RFID where magnetic field performance is key.
Is every coil an inductor?
Not exactly.
- A coil describes the physical shape: wound wire.
- An inductor describes the electrical component that uses that coil to provide inductance.
A random, uninsulated, or uneven coil may have almost no useful inductance. But a precision-engineered coil designed for consistent inductance, current handling, and performance is an inductor.
In professional electronics, when someone says “coil,” they mean a functional inductor — not just a random loop of wire.
When should you use “coil” vs “inductor”?
Use coil when:
- Talking about RFID, NFC, wireless charging, or antennas
- Discussing physical shape and manufacturing
- Speaking casually with technicians or production teams
Use inductor when:
- Writing technical specs, datasheets, or circuit designs
- Discussing inductance, impedance, or circuit theory
- Referring to power supply components and filtering parts
Summary
The most common and direct answer to:
What is another name for an inductor?
is:
Coil.
Other widely used names include choke, reactor, winding, inductance coil, and magnetic coil.
Whether you call it an inductor or a coil, it refers to the same essential component: a wound structure that stores energy in a magnetic field, resists changes in current, and supports filtering, resonance, and wireless communication.
Understanding these terms helps you choose the right components, communicate better with suppliers, and design more reliable electronic systems.
