Classification of magnetic materials

Magnetic materials have strong magnetic materials with magnetic order, and generally include weak magnetic and antiferromagnetic materials that can apply their magnetism and magnetic effects. Magnetism is a basic property of matter. Materials can be divided into diamagnetic, paramagnetic, ferromagnetic, antiferromagnetic and ferrimagnetic materials according to their internal structure and properties in the external magnetic field. Ferromagnetic and ferrimagnetic substances are strong magnetic substances, and diamagnetic and paramagnetic substances are weak magnetic substances. Magnetic materials can be divided into metal and nonmetal according to their properties. The former mainly includes electrical steel, nickel base alloy and rare earth alloy, while the latter mainly includes ferrite materials. According to the use, it can be divided into soft magnetic materials, permanent magnetic materials and functional magnetic materials. Functional magnetic materials mainly include magnetostrictive materials, magnetic recording materials, magnetoresistance materials, magnetic bubble materials, magneto-optical materials, gyromagnetic materials and magnetic film materials. The basic magnetic properties of magnetic materials are reflected by magnetization curves, hysteresis loops and magnetic losses.

Function of chip inductor

SMD inductor is an electromagnetic induction component wound with insulated wires. It is a commonly used inductive element. Function of SMD inductor: Connect DC resistance to AC This is a simple statement. It isolates and filters AC signals or forms a resonant circuit with capacitors and resistors Function of tuning and frequency selecting inductor: The LC tuning circuit can be formed by the parallel connection of inductance coil and capacitor. Any current of the chip inductor in the circuit will generate a magnetic field, and the magnetic flux of the magnetic field will act on the circuit.

What's wrong with chip inductance heating?

We still need to be calm about the chip inductance heating. Don't panic when you hear "heating"! Anyone who has a little junior high school physics foundation should know the law of conservation of energy! When the electric energy passes through the chip inductor, part of it is converted into heat energy, and the chip inductor must generate heat. But there is a limit to this "heat", commonly known as "temperature rise" in the industry. As long as the temperature is within 45 ° C, there is no problem, and there is no need to worry about affecting the performance of the chip inductor; If the temperature rise exceeds 45 degrees, the chip inductance may really have a problem.