First question: What is a power inductor?

There are various opinions in the industry about what a power inductor is. Although they are all correct, they are all one-sided. The editor believes that the accurate explanation is that a power inductor refers to an inductor that must pass through a large current and withstand a high voltage at both ends during operation.

The naming of power inductors in the industry is mainly based on their functions. Names such as high current inductance and high-frequency inductance are given in a similar way.

The second question: What is the function of power inductance and what are the functions of power inductance?

The power inductor has two functions, serving as a choke (also known as a choke) or as a filter.

When the power inductor acts as a choke, the self induced electromotive force generated by the inductor varies inversely with the coil current, hindering the current change. According to the working frequency of the power inductor, there are also high-frequency power inductors (high-frequency choke) and low-frequency power inductors (low-frequency choke).

When used as a filter, the power inductor and capacitor can form an LC filtering circuit, which uses LC resonance to filter out signals of a specific frequency. Similarly, based on the operating frequency, there are differences between high-frequency filters and low-frequency filters.

The third question: What are the characteristics of power inductance

According to definition, power inductance has two characteristics:
1. Can pass through high current;
2. The voltage at both ends of the inductor is high during operation.

If manifested in appearance, the wires used for power inductor coils are generally thicker (can pass through high currents). If the coil wire is particularly thin, the possibility of being a power inductor is basically ruled out.

Fourth question: What are the types of power inductors?

Divided by mounting method, it can be divided into chip power inductors and plug-in power inductors. In fact, when we look back at the answer to the question of what power inductance is, we can see that power inductance is defined by its working state, without specifying which form and structure it is. In principle, as long as the conditions are met, any category such as R-bar inductor, magnetic ring inductor coil, and I-shaped inductor can be used as power inductor,.

However, structurally speaking, traditional wound inductors, I-shaped inductors, and inductive coils are more suitable for making power inductors. Color ring inductors and chip stacked inductors generally allow a small amount of current to pass through, so they are rarely used as power inductors.

Fifth question: What is the difference between power inductors and ordinary inductors?

The difference between power inductors and ordinary inductors lies in their functionality. Power inductors require the ability to generate sufficient self induced electromotive force for choking or filtering. Ordinary inductors, on the other hand, only need to generate a corresponding frequency signal.

Sixth question: Can power inductors and ordinary inductors replace each other?

In general, power inductors can replace ordinary inductors, but the opposite is not possible.

Question 7: What is the difference between power inductance and shielding inductance?

The difference lies in the different classification standards. Power inductors require high current and high voltage resistance in terms of functionality, while shielding inductors indicate a shielding structure. There is often an intersection between two classifications, where an inductor is both a power inductor and a shielding inductor.

Question 8: Which is the best manufacturer of SMD power inductors?

In the the Pearl River Delta region represented by Dongguan, Shenzhen, inductance manufacturers account for about 80% of the country. A professional inductance manufacturer and supplier - Gain Industry, has been supplying inductance to domestic high-tech enterprises for many years, and has a complete quality management system and service standards. Provide SMD power inductor manufacturers for direct sales, wholesale, and customization.

Question 9: What models are recommended for selecting power inductors?

The selection of power inductors can be checked by clicking on the relevant models of power inductors. This category mainly includes SMD power inductors, among which CD SMD inductors and RH series can all be used as corresponding models of power inductors.