Surface Mount Inductor (SMD) is an electronic component designed for Surface Mount Technology (SMT). They are widely used in various electronic devices, especially in space limited and high-density circuit board designs. Chip mounted inductors have become an indispensable component of modern electronic manufacturing due to their small size, light weight, and ease of automated assembly.

characteristic:

Miniaturization: SMT inductors are usually small in size and suitable for compact designs.

Surface mount: designed to be directly soldered onto the surface of a PCB, rather than installed through drilling.

Easy to automate: Suitable for high-speed and high-precision automated production lines, improving production efficiency and consistency.

Multiple inductance values: Provides a wide range of inductance value options to meet the needs of different circuit designs.

Good thermal performance: usually able to withstand high temperature rise, suitable for working in high-temperature environments.

Electromagnetic compatibility: Some SMT inductor designs have good electromagnetic shielding performance, which helps reduce electromagnetic interference (EMI).

Application:

Chip mounted inductors are widely used in the following fields:

Power management: used as energy storage and filtering components in DC-DC converters, AC-DC converters, and voltage regulators.

Communication equipment: Used for tuning and filtering of radio frequency (RF) circuits in wireless communication modules, mobile phones, and other mobile devices.

Computer hardware: Used for filtering and decoupling power lines in devices such as motherboards, graphics cards, and hard drives.

Consumer electronics: Used for processing audio and video signals in devices such as televisions, audio systems, and gaming consoles.

Automotive Electronics: Used for power management and signal conditioning in automotive electronic control systems.

Packaging and dimensions:

The packaging and dimensions of SMT inductors are very diverse, including:

Size codes: such as 0402, 0603, 0805, 1206, 1812, 2016, 3220, etc., each code represents a specific length and width.

Shape: including multi-layer, wire wound, magnetic encapsulated, etc.

When selecting a SMT inductor, the following parameters need to be considered:

Inductance value: Determine the required inductance value based on the circuit design requirements.

Rated current: The maximum current that an inductor can safely withstand.

Direct current resistance (DCR): The inherent resistance of an inductor, which affects power loss and efficiency.

Self resonant frequency (SRF): The self resonant frequency of an inductor at high frequencies, beyond which the inductor will no longer exhibit ideal inductance behavior.

Temperature rise: The maximum allowable temperature rise of an inductor during operation.

Size and packaging: Choose the appropriate size and packaging based on the actual installation space and process.

Manufacturers usually provide detailed product specifications and data sheets to help users make appropriate choices. Due to the wide variety of SMT inductors, the most suitable inductor product should be selected based on specific circuit design and application requirements. Meanwhile, considering the important role of SMT inductors in circuits, the stability of their quality and performance is crucial for the reliable operation of the entire system.