Full range of Toroidal Chokes manufacturer in China

FBELE Toroidal Chokes is specialized in the production of various types of inductance coils. The product quality is stable and the price is preferential. It is a professional manufacturer with reliable quality. Welcome to call us for consultation. It has many years of industry experience, sufficient supply, long-term supply and advanced production technology

  • TS16949, UL, TUV, CQC certification
  • Long electricallife and mechanical life
  • With better stability and durability.
  • high quality level,stock ready for shipment.

What is Toroidal Chokes

Soft magnetic inductor is an electronic component, which mainly consists of a circular magnetic core. It is used as a horn inductor for iron powder, ferrite, or wires of other materials. Longitudinal field coils are used in a wide range of applications, such as high-frequency coils and transformers. Soft magnetic inductors can have higher inductance factor and higher inductance structure than the same electromagnetic coil. This is largely because smaller turns are required when providing a closed magnetic path to the core. This magnetic flux is limited to the core at a high permeability, and the energy consumed by confinement is reduced, which can be absorbed to nearby objects, so the annular coil provides some cores. In the geometric magnetic flux direction the center of the threaded ring, while the soft magnetic flux direction parallel to the core is the ring.

What is a good Toroidal Chokes?

Strong Adaptability

Strong adaptability to working environment, wide working temperature range between -20 ℃ -80 ℃, stable operation


TS16949, UL, TUV, CQC certification


More stable operation in the switching power supply circuit without open circuit problem


FBELE provides mold opening and customizes products according to customer drawings and samples for Toroidal Chokes

Main Parameter of Toroidal Chokes

Inductance (inductance coil) is an electromagnetic induction element wound with insulated wires (such as enameled wire, gauze wire, etc.),

Chip power inductor

It is also one of the commonly used components in electronic circuits. Inductance is a group of series coaxial line turns made of enamelled wire, gauze wrapped wire or plastic wire wound on the insulation skeleton or magnetic core and iron core. It is represented by the letter “L” in the circuit. Its main function is to isolate and filter AC signals or form a resonant circuit with capacitors and resistors.

Inductance is generally composed of framework, winding, shielding cover, packaging material, magnetic core or iron core, etc.

High frequency patch wound inductor

  1. framework framework generally refers to the support for winding coil. For some fixed or adjustable inductors with large volume (such as oscillation coil, choke coil, etc.), most of them wrap enameled wire (or yarn wrapped wire) around the skeleton, and then install the magnetic core, copper core, iron core, etc. into the inner cavity of the skeleton to improve its inductance.

The skeleton is usually made of plastic, bakelite and ceramics, which can be made into different shapes according to actual needs.

Small inductors (e.g. color coded inductors)

Generally, the inductor does not use a skeleton, but directly wraps the enameled wire around the magnetic core.

Air core inductors (also known as bodiless coils or air core coils, which are mostly used in high-frequency circuits) do not use magnetic cores, skeletons and shielding covers. Instead, they are first wound on the mold and then removed from the mold, and a certain distance is drawn between the coils.

  1. winding winding refers to a group of coils with specified functions, which is the basic component of inductance.

The winding can be divided into single layer and multi-layer. The single-layer winding has two forms: close winding (the wires are next to each other in winding) and intermediate winding (each wire is separated by a certain distance in winding); There are many kinds of multi-layer winding, such as horizontal winding, random winding, honeycomb winding, etc.

  1. magnetic core and magnetic rod the magnetic core and magnetic rod are generally made of nickel zinc ferrite (NX Series) or manganese zinc ferrite (MX Series) and other materials, which have “I” shape, column shape, cap shape, “e” shape, tank shape and other shapes


  1. the iron core material mainly includes silicon steel sheet, permalloy, etc., and its shape is mostly “e”.
  2. in order to prevent the magnetic field generated by some inductors from affecting the normal operation of other circuits and components, a metal screen cover (such as the oscillation coil of a semiconductor radio) is added to the shielding cover. Using the inductance of the shield will increase the loss of the coil.
  3. after winding some inductors of packaging materials (such as color code inductors, color ring inductors, etc.), seal the coil and magnetic core with packaging materials. The packaging material is plastic or epoxy resin.

Types of common Toroidal Chokes

  1. Honeycomb coil

If the plane of the wound coil is not parallel to the rotating plane, but intersects at a certain angle, this coil is called a honeycomb coil. The number of times that the wire bends back and forth after one revolution is often called the number of turns. The advantages of the honeycomb winding method are small volume, small distributed capacitance and large inductance. The honeycomb coil is wound by the honeycomb winding machine. The more the break points, the smaller the distributed capacitance

  1. Ferrite core and iron powder core coil

The inductance of the coil is related to the presence or absence of a magnetic core. Inserting a ferrite core into a hollow coil can increase the inductance and improve the quality of the coil.

  1. Copper core coil

Copper core coil is widely used in ultrashort wave range. Rotating the position of copper core coil to change the inductance is more convenient and durable.

  1. Color coded inductance coil

It is a kind of high-frequency inductance coil, which is made by winding some enameled wires on the magnetic core and then packaging it with epoxy resin or plastic. Its operating frequency is 10kHz to 200MHz, and its inductance is generally between 0.1uh and 3300uh. The color code inductor is an inductor with fixed inductance, and its inductance is marked with a color ring as the resistance. Its unit is uh.

  1. Choke coil

The coil that restricts the passage of alternating current is called the choke coil, which is divided into high-frequency choke coil and low-frequency choke coil.

  1. Deflection coil

The deflection coil is the load of the output stage of the TV scanning circuit. The requirements of the deflection coil are: high deflection sensitivity, uniform magnetic field, high Q value, small volume and low price.

China Leading Toroidal Chokes Supplier


FBELE company has been engaged in the research, development, production and sales of inductance loop for 25 years, mainly engaged in magnetic loop inductance, inductance coil, common mode inductance series, etc. the inductance loop conforms to iso9001:2015 quality system, ensures qualified shipment in all aspects, and helps enterprises reduce costs and increase efficiency

FBELE electronics has been established for 25 years, introducing advanced technologies at home and abroad, focusing on R & D, production and sales: integrated inductors, shielded inductors, I-shaped inductors and other manufacturers direct selling, short delivery cycle, free sending samples, integrating Chinese and Japanese technologies, leading the technological frontier

FBELE electronics is committed to providing customers with cost – effective inductance coils with quality assurance and reliable performance The company’s professional technical team and dedicated service team provide you with full service, placing orders within 24 hours

What does customer say about FBELE Company


FBELE not only provides standard products, but also provides us with free design. The solutions provided are very standardized, safe, practical, time-effective and technical. We are very satisfied. Thanks to FBELE’s design team.


We have cooperated with fbele for 8 years. Previously, we only purchased standard products. Since 2019, we know that fbele can also provide processing business of semi-finished products, which saves costs for our company. In the future, we also want to cooperate with fbele on other projects, and the price is also important.

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China Best Radial Lead Inductor Manufacturer & Supplier

FBELE specializes in the production of patented ring coil inductors, which have passed the automobile TS16949, UL, TUV, CQC certification, expert design, and passed the authoritative test of wide and micro measurement, free sampling, and authoritative certification

FBELE Certification

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