Full range of Air Core Inductors manufacturer in China

FBELE hollow inductors, Air Core Inductors,SMD inductors, boost inductors, accurately understand fbele, customized on demand, stable quality, fast pricing and fast delivery Boost inductor, direct sale by the manufacturer, free proofing, cost reduction, long service life, online customer service check, online consultation and after-sales guidance

  • TS16949, UL, TUV, CQC certification
  • 25 years experience in air core inductors
  • With better stability and durability.
  • high quality level,stock ready for shipment.

What is Inductors

Inductor is an element that can convert electrical energy into magnetic energy and store it. The structure of the inductor is similar to that of a transformer, but has only one winding. The inductor has a certain inductance, which only blocks the change of current. If the inductor is in the state of no current passing, it will try to prevent the current from flowing through it when the circuit is connected; If the inductor is in a state of current flow, it will try to keep the current constant when the circuit is disconnected. Inductor is also called choke, reactor and dynamic reactor.

What is a good Air Core Inductors?

High Performance

It has good magnetic shielding, high sintering density and good mechanical strength


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 Air Core Inductors

Functional & Use of Air Core Inductors

The inductor mainly plays the role of filtering, oscillation, delay, notch, etc. in the circuit, as well as screening signals, filtering noise, stabilizing current and suppressing electromagnetic wave interference. The most common function of inductance in circuit is to form LC filter circuit together with capacitance. The capacitor has the characteristic of “blocking DC and connecting AC”, while the inductor has the function of “connecting DC and blocking AC”. If the DC current with many interference signals is passed through the LC filter circuit, the AC interference signal will be consumed by the inductor into heat energy; When the relatively pure DC current passes through the inductor, the AC interference signal in it is also changed into magnetic induction and thermal energy. The higher frequency is most likely to be impedance by the inductor, which can suppress the higher frequency interference signal.

The inductor has the characteristics of preventing the passage of AC and allowing the smooth passage of DC. The higher the frequency, the greater the coil impedance. Therefore, the main function of the inductor is to isolate and filter the AC signal or form a resonant circuit with capacitors, resistors, etc.


Chip Inductance

Air Core Inductors is an electromagnetic induction element wound with insulated wires. The utility model belongs to a commonly used inductive element. The function of chip inductor: connect DC resistance to AC, which is a simple statement. It can isolate and filter the AC signal or form a resonant circuit with capacitors, resistors, etc Function of tuning and frequency selecting inductor: LC tuning circuit can be composed of inductor coil and capacitor in parallel. Any current of the chip inductor in the circuit will produce a magnetic field, and the magnetic flux of the magnetic field will act on the circuit.

When the current passing through the chip inductor changes, the DC voltage potential generated in the chip inductor will prevent the change of current. When the current passing through the inductance coil increases, the self induced electromotive force generated by the inductance coil is opposite to the current direction, preventing the increase of current, and converting part of electric energy into magnetic field energy to store in the inductance; When the current passing through the inductance coil decreases, the self induced electromotive force is in the same direction as the current, preventing the decrease of the current and releasing the stored energy to compensate for the decrease of the current. Therefore, after the inductance filter, not only the load current and voltage pulsations are reduced, the waveform becomes smooth, but also the conduction angle of the rectifier diode increases.

Role of inductor 1: the color ring inductor has the function of blocking current: the copper core in the color ring inductor coil is always resistant to the current change in the coil. The color ring inductor has a blocking effect on the AC current used in the circuit. The size of the blocking effect is called inductive reactance XL, and the unit is Ohm. The relationship between it and inductance L and AC frequency f is xl=2 π fl. the color loop inductance can be mainly divided into high-frequency choke coil and low-frequency choke coil.

Function of inductor 2: the color loop inductor has the function of tuning and frequency selection: the color loop inductor and electrolytic capacitor can be connected in parallel to form an LC tuning circuit. The inductive reactance and capacitive reactance of the circuit are equivalent and reverse during resonance, that is, if the natural oscillation frequency f0 of the circuit is equal to the frequency f of the non AC signal, the inductive reactance and capacitive reactance of the circuit are also equal. The use of color ring inductors is generally not very high, and the color ring inductors used in the circuit are generally relatively stable.

Role of inductor 3: the largest role of color loop inductor is mainly used to filter signal, filter noise, stabilize current and suppress electromagnetic wave interference. The basic function of the color ring inductor is to charge and discharge, but many circuit phenomena extended from this basic charge and discharge function make the color ring inductor have various uses. Nowadays, the color ring inductor has been used by the majority of customers, but the role of a small inductor is not underestimated.

China Leading Air Core Inductors Supplier


FBELE hollow inductors, air core inductors,DC common mode inductors, chip inductors, professional manufacturers, imported products with original packaging, help meet your product needs. Welcome to call us for consultation. We will provide you with high-quality after-sales service. Welcome to call us for details

For 25 years, FBELE has focused on the customized production of air core inductance coil, skeleton inductance coil and wireless charging coil. The products are widely used in the field of fbele foot ring products. The factory is equipped with a professional dust-free workshop, which is directly sold by the manufacturer with quality assurance,

FBELE hollow inductors supply a series of products, such as chip inductors, common mode inductors, integrated inductors, power inductors, color coded inductors, etc., which can be customized according to product requirements

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 Air Core Inductors Manufacturer & Supplier

FBELE hollow inductors,Air Core Inductors, supply a series of products, such as chip inductors, common mode inductors, integrated inductors, power inductors, color coded inductors, etc., which can be customized according to product requirements

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