What Is A Smd Inductor Winding | GETWELL

The following.Getwell  professional chips inductor manufacturers to tell you,what is a smd inductor winding.

Do you know the structure of inductor?

Inductor generally consists of frame, winding, shield, packaging material, core or core, etc.

1.The skeleton frame generally refers to the bracket of winding coil.Some large fixed or adjustable inductors (such as oscillating coils, baffles, etc.) mostly wrap enameled wire (or gauze wire) around the skeleton, and then put the magnetic core or copper core, iron core, etc., into the inner cavity of the skeleton, in order to increase the amount of inductance.The support is generally made of plastic, bakelite, ceramic and other materials, and can be made into different shapes according to actual needs.Small sensors (such as color-coded sensors) usually do not use a sensor, but instead wrap enameled wire directly around the magnetic core.The hollow inductor (also known as the decoupled coil or hollow coil, mostly used in high-frequency circuits) does not use magnetic core, skeleton and shield, etc. Instead, the coil is wound before the mold is taken out, and the distance between each coil is extended a little.

2.winding winding refers to a set of coils with specified functions, is the basic component of the inductor.The windings are divided into monolayer and multilayer.There are two types of single-layer windings: close-wound (the winding of the wire is one turn) and interwound (the winding of each wire is a certain distance apart);The multilayer winding has layering flat winding, random winding, honeycomb winding and so on.

3.Magnetic core and magnetic bar magnetic core generally adopts nickel-zinc ferrite (NX series) or manganese zinc ferrite (MX series) and other materials, including I-shape, column, cap, E shape, pot shape, etc.

4.core core materials are mainly silicon steel sheet, permalloy, etc., its shape is more "E" type.

5.In order to avoid the magnetic field generated by some inductors affecting the normal operation of other circuits and components, a metal shielding layer (such as the oscillation coil of semiconductor radio, etc.) is added to the shielding cover.When the inductor is shielded, the coil loss increases and the Q value decreases.

6.Packaging materials include some inductors (such as color code inductors, color ring inductors, etc.).After winding, the coil and core are sealed with packaging material.The packaging material is made of plastic or epoxy resin.

What is the purpose of wound patch inductor?

Application: The product is widely used in XDSL module and cable TV modems, computers, digital cameras and other miniature TV, LCD TV, camera, portable VRC, car audio, thin radios, TV tuners, cordless phones, etc.

What should be paid attention to in the winding process of chips inductor?

According to the needs of the circuit, the winding of chips inductor method is selected.

When winding hollow, should according to the requirement of the circuit, the size of the diameter and the size of the inductance coil skeleton, winding method, between winding coil is suitable for use in high frequency and ultra high frequency circuit, the number is less than 3-5 times, but no skeleton, can have good properties, high Q value, can reach 150-400, stability is also high.

Single layer tightly wound coil is suitable for short wave and medium wave circuit, its Q value can reach 150-250, and has high stability.

What is the function of the wound patch inductor?

The basic function of wound patch inductor: filtering, oscillation, delay, notch, etc.

In the electronic circuit, for the AC finite current action, it and the resistor or capacitor can form a high-pass or low-pass filter, phase-shifting circuit and resonant circuit;Transformer can carry out AC coupling, variable voltage, variable current and impedance conversion.

The role of wound patch inductor seems to be somewhat opposite, we have said that the capacitor is through and through resistance straight, and the inductor is just the opposite, its role is through and through direct resistance, the direction of the magnetic field generated by the direct current through the inductor is the same size, will not change.

Above is the inductor winding knowledge, hope to have certain help to you.We are a chip inductor supplier from China, welcome to consult us!