news

What are SMD inductors? What are they used for? Most of them are definitely not well understood. The following BIG editor will give you a detailed introduction:
SMD inductors surface mount high-power inductors. It has the characteristics of miniaturization, high quality, high energy storage and low resistance. Mainly used in computer display boards, notebook computers, pulse memory programming, and DC-DC converters.
There are 4 types of chip inductors: thin-film chip, woven, wire-wound and multilayer inductors. Two types of wire-wound type and laminated type are commonly used. The former is a product of the miniaturization of traditional wire-wound inductors; the latter is made using multi-layer printing technology and laminated production technology. The volume is smaller than that of wire-wound chip inductors. It is a key product developed in the field of inductive components.
Thin-film chip chip inductors have the characteristics of maintaining high Q, high precision, high stability and small size in the microwave frequency band. The internal electrodes are concentrated on the same layer, and the magnetic field distribution is concentrated, which can ensure that the device parameters after mounting do not change much, and show good frequency characteristics above 100MHz.
The characteristic of woven chip inductors is that the unit volume inductance at 1MHz is larger than other chip inductors, small in size, and easy to install on the substrate. Used as a miniature magnetic component for power processing.
The characteristics of wire-wound chip inductors are a wide range of inductance (mH～H), high inductance accuracy, low loss (large Q), large allowable current, strong manufacturing process inheritance, simplicity, and low cost, but The disadvantage is that it is limited in further miniaturization. The ceramic core winding type chip inductor can maintain a stable inductance and a fairly high Q value at such a high frequency, so it occupies a place in the high-frequency circuit.
Stacked inductors have good magnetic shielding properties, high sintering density, and good mechanical strength. The disadvantages are low pass rate, high cost, small inductance, and low Q value. Compared with wire wound chip inductors, stacking has many advantages: small size, which is conducive to miniaturization of the circuit, closed magnetic circuit, will not interfere with surrounding components, and will not be interfered by neighboring components, which is beneficial to components High-density installation of devices; integrated structure, high reliability; good heat resistance and solderability; regular shape, suitable for automated surface mounting production.