行业组件数据 · 2026

电感器

An inductor is a passive electrical component that stores energy in a magnetic field when electric current flows through it, used for filtering, energy storage, and signal processing in driver circuits.

技术定义与适配语境
典型 电感器 会按材料、尺寸公差、适配关系和失效风险在 电气设备制造 中评估。

An inductor is a fundamental passive electronic component consisting of a coil of conductive wire wound around a core material (which may be air, ferrite, or other magnetic materials). It operates based on electromagnetic induction principles, opposing changes in current flow through self-inductance. In driver circuits, inductors serve critical functions including energy storage in switching regulators, filtering of high-frequency noise, impedance matching, and forming resonant circuits with capacitors. The inductance value (measured in henries) determines its energy storage capacity and frequency response characteristics.

组件规格

定义
An inductor is a fundamental passive electronic component consisting of a coil of conductive wire wound around a core material (which may be air, ferrite, or other magnetic materials). It operates based on electromagnetic induction principles, opposing changes in current flow through self-inductance. In driver circuits, inductors serve critical functions including energy storage in switching regulators, filtering of high-frequency noise, impedance matching, and forming resonant circuits with capacitors. The inductance value (measured in henries) determines its energy storage capacity and frequency response characteristics.
工作原理
Inductors operate on Faraday's law of electromagnetic induction. When current flows through the coiled conductor, it generates a magnetic field around it. Any change in current induces a voltage (electromotive force) that opposes the change in current (Lenz's law). This property allows inductors to store energy in their magnetic fields and release it back to the circuit, smooth current variations, and block high-frequency AC signals while allowing DC and low-frequency signals to pass.
材料
Copper or aluminum wire for windingCore materials: air (for high-frequency applications)ferrite (for power applications)powdered ironlaminated silicon steelor nanocrystalline materialsInsulation: enamel coating on wireepoxy encapsulationTerminal materials: tin-plated copper or brass.
Q Factor
10 to 100 at specified frequency
Tolerance
±5% to ±20%
Inductance
1μH to 100mH
DC Resistance
0.01Ω to 10Ω
Current Rating
100mA to 20A
Saturation Current
Specified by manufacturer
Operating Temperature
-40°C to +125°C
Self-Resonant Frequency
1MHz to 100MHz
标准
IEC 62024IEC 62391MIL-PRF-27AEC-Q200

行业分类与别名

电感器 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Exceeding rated current->Core saturation and overheating->Select inductors with appropriate current ratings, implement current limiting circuits, and monitor temperature
Mechanical stress or vibration->Wire breakage or core damage->Use vibration-resistant mounting, conformal coating, and select mechanically robust inductor designs
High-frequency operation beyond self-resonant frequency->Loss of inductive properties and circuit instability->Select inductors with appropriate SRF for application frequency, use multiple inductors in series for high-frequency applications

工业生态与工程逻辑

0
Magnetic saturation leading to circuit failure
1
Overheating due to excessive current
2
Mechanical vibration causing audible noise
3
Electromagnetic interference with nearby components
4
Insulation breakdown at high voltages

合规与检测

tolerance
Inductance tolerance typically ±10% to ±20% for power applications, ±5% for precision circuits
test method
LCR meter measurement at specified frequency and voltage, temperature cycling tests, current saturation tests, insulation resistance tests

制造该组件的工厂

来自 CNFX 组件能力表的相关制造商资料。

制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What is the main function of an inductor in a driver circuit?

In driver circuits, inductors primarily store energy during switching cycles (in switching regulators), filter high-frequency noise from power supplies, and smooth current flow to protect sensitive components.

How do I select the right inductor for my application?

Consider these key parameters: required inductance value, current rating (both RMS and saturation current), DC resistance (affects efficiency), operating frequency, physical size constraints, and temperature stability requirements for your specific circuit.

What causes inductor saturation and why is it problematic?

Saturation occurs when the magnetic core material can no longer support increased magnetic flux density. This causes a sharp drop in inductance, leading to excessive current draw, overheating, and potential circuit failure in power applications.

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CNFX Industrial Component Index · 电气设备制造

数据基础

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初步技术归类
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