Analyzing the internal structures of capacitors, resistors, inductors, and other components to reveal their performance principles and application values.
The June component market showed a K-shaped divergence, with a surge in AI and automotive demand, leading to widespread price increases in passive components and memory chips, and accelerated domestic substitution.
In basic components such as resistors, inductors, capacitors, and diodes, distinguishing polarity is a fundamental practical point in circuit welding, assembly, and debugging. It is also the most error-prone and fault-prone part, with significant differences in polarity characteristics among resistors, capacitors, and inductors.
A quick reference table for SMD capacitors, inductors, ferrite beads, and diodes, helping with circuit design selection.
Global market data on passive components from 2020 to 2025 clearly shows that the industry maintained steady growth for five consecutive years, with a compound annual growth rate (CAGR) of 8.1%, confirming its long-term expansion trend. At present, technological innovation is accelerating rapidly. Miniaturization, high frequency and high power, automotive-grade high reliability, and integrated modularization have become the four major threads of product iteration. A large number of domestic manufacturers are speeding up to achieve leapfrog progress in both technology and market share.
Market data shows that the global market size of integrated molded inductors reached USD 4.755 billion in 2025. Industry estimates project the market volume will expand to USD 9.327 billion by 2032, with a steady compound annual growth rate (CAGR) of 10.13% over this period.
At the Shanghai International Symposium on Circuits and Systems held on May 25, He Tingbo, President of Huawei's Semiconductor Business Group, officially unveiled the Tao (τ) Law, a new principle guiding the development of the semiconductor industry, alongside a supporting academic paper.
Circuits we encounter daily may seem abstract and hard to understand — electric current is invisible and intangible, and the functions of resistors, capacitors and inductors are even more difficult to grasp intuitively. However, we can easily make sense of them by comparing an electric circuit to a water driven piping system.
Metal film resistors are common components in high-frequency circuits, and many engineers are concerned about whether they have parasitic inductance?The answer is affirmative. Metal film resistors do have parasitic inductance, but it is relatively small.
Due to the surge in upstream raw material costs, not only have our expenses climbed, but as a longstanding electronic component manufacturer, Fenghua cannot withstand the continuous increase in costs and has had to raise prices. The price increases for certain products (inductors, varistors, ceramic capacitors, and thick-film resistors) are detailed in the letter below:
