What are the classifications of passive components?

2022-11-10 14:55

The passive components industry boasts promising prospects, as these components deliver substantial benefits to businesses during application, making them highly favored by customers. To help you become more familiar with them, understand their everyday use, and maximize their advantages for your organization, we’ll now share some key insights into the classification of passive components—hoping to provide valuable guidance and enhance the value they bring.

　　The passive components industry boasts promising growth prospects, as these products deliver substantial benefits to businesses during application, making them highly favored by customers. To help you become more familiar with them, understand their everyday use, and maximize their advantages for your organization, we’ll now share some key insights into the classification of passive components—hoping to provide valuable guidance and enhance the value they bring.

　　Among passive components, inductors are one of the most commonly used parts in electronic circuits, accounting for approximately 10% to 15% of all electronic components. In particular, the downstream trend toward lighter, thinner, shorter, and smaller electronic products makes the miniaturization and chip‑integration of upstream components an inevitable development path. At present, China’s inductor production is dominated by chip‑type inductors, and their market share is expected to expand further in the future. Based on materials and packaging methods, passive components can be classified into three categories. Fixed non‑surface‑mount resistors: these components are primarily used for power or signal processing, with very high demand in applications such as power supplies and display devices.

　　Among passive components, there is also the fixed chip resistor, which is widely used in information technology, telecommunications, consumer electronics, and various instruments and meters. Thermistors and variable resistors are primarily employed for temperature sensing or control, motor protection and starting devices, and overcurrent/voltage protection circuits, serving as key components. Resistors are mainly used to regulate and stabilize current and voltage in circuits; they can function as shunt resistors and voltage dividers, as well as matching loads in circuit design.

　　When two conductive materials are separated by a dielectric and used to store potential electrostatic charge, the device is called a capacitor. It is also one of the passive components. Capacitors come in many varieties; based on the materials used, they can be classified into more than 30 types. Domestically, manufacturers primarily produce aluminum electrolytic capacitors, ceramic capacitors, and plastic‑film capacitors. Among these, a common type is the multilayer ceramic capacitor (MLCC). Broadly speaking, ceramic capacitors fall into two categories: single‑layer ceramic capacitors and multilayer ceramic capacitors (MLCCs). Due to their small size, relatively high capacitance, low loss at high frequencies, and excellent stability, MLCCs hold great promise for future electronic applications and are widely used in motherboards, laptops, mobile phones, as well as in devices such as scanners, CD players, and modems.

　　The passive components industry boasts strong growth prospects, as these products deliver substantial benefits to businesses during use, making them highly favored by customers. The above is a brief overview of the classification of passive components; we hope it proves helpful to many. We will continue to add more content in the future, so please stay tuned.

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In the current trend toward product miniaturization, inductor sizes continue to shrink to meet the demands of consumer electronics, automotive applications, fast‑charging systems, and AI devices for slimmer form factors and higher integration. Meanwhile, advances in high‑permeability, low‑loss magnetic powders and high‑performance coil materials enable small‑size components to satisfy requirements for high current handling and low losses.

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