Applications of Monolithic Inductors

2022-06-23 14:37

Monolithic inductors feature high current handling capability, customizable dimensions to meet customer specifications, lower internal resistance, and smaller inductance values; NR inductors, in particular, can achieve even higher inductance levels. Compared with NR inductors, monolithic inductors are relatively more expensive. However, as electronic devices place ever‑higher demands on frequency and current, integrated inductors are expected to see widespread adoption in the future. The magnetic shielding performance of integrated inductors far surpasses that of CD‑type inductors with semi‑open magnetic circuits. CD‑type inductors are limited by ambient operating temperatures due to the reduction in saturation flux density at elevated temperatures and exhibit poor thermal stability, whereas integrated inductors offer comparatively superior performance. Another critical factor is the integrated inductor…

　　Monolithic inductors feature high current handling capability, customizable dimensions to meet customer specifications, lower internal resistance, and smaller inductance values; NR‑type inductors can achieve even higher inductance. Compared with NR inductors, monolithic inductors are relatively more expensive. However, as electronic devices place ever‑higher demands on frequency and current, integrated inductors are expected to see widespread adoption in the future. The magnetic shielding performance of integrated inductors far surpasses that of CD‑type inductors with semi‑open magnetic circuits. CD‑type inductors are limited by reduced saturation flux density at elevated temperatures and exhibit poor thermal stability, whereas integrated inductors offer superior overall performance. Another key advantage is that integrated inductors can support significantly higher saturation currents, preventing rapid saturation even under heavy loading.

　　Digital designation of monolithic inductors:

　　What do the numbers on an integrated inductor mean? The numbers on an integrated inductor indicate its inductance value and typically consist of digits and the letter “R.” The numeric part usually comprises three digits: the first two represent the significant digits, and the third indicates the number of zeros.

　　 Monolithic inductor Structure:

　　An integrated‑type inductor comprises a substrate and a winding body. The substrate is formed by die‑casting the winding body into a metallic magnetic powder. The surface‑mount leads serve as the winding body’s lead-out terminals and are directly formed on the substrate’s surface. Monolithic inductor It employs a surface-mount package and is a type of chip inductor.

　　 Monolithic inductor Applications:

　　Integrated inductors are primarily used in industrial control motherboards, graphics cards, tablet computers, laptops, automotive systems, power distribution systems, DC/DC converters, LED street lighting, communication equipment, medical devices, and more. They are well-suited for high-reliability applications in industries such as automotive and aerospace.

　　Currently, computer motherboards and smart terminal devices utilize integrated inductors, with only the inductor itself mounted on the circuit board. This design ensures that our electronic products do not suffer component damage due to current‑related issues during operation. As the inductor industry continues to evolve, both manufacturing and R&D capabilities are steadily improving, driving ongoing advancements and upgrades in inductor‑based products.

Advantages and Functions of Monolithic Inductors

What are the requirements for iron‑powder core soft magnetic materials in monolithic inductors?

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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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