INDUSTRY COMPONENT

Inductor (for LC filters)

Inductor for LC filters that stores energy in a magnetic field to filter high-frequency noise in electrical circuits.

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Component Specifications

Definition
An inductor is a passive electronic component designed for LC (inductor-capacitor) filters, primarily used in low-pass filter configurations to attenuate high-frequency signals while allowing low-frequency signals to pass. It operates by storing energy in a magnetic field when current flows through it, creating impedance that increases with frequency. In industrial applications, it is critical for reducing electromagnetic interference (EMI), smoothing power supplies, and ensuring signal integrity in machinery and electronic systems.
Working Principle
The inductor works based on Faraday's law of electromagnetic induction. When alternating current (AC) flows through its coil, it generates a magnetic field that opposes changes in current, creating inductive reactance (XL = 2πfL). In an LC filter, the inductor combines with a capacitor to form a resonant circuit that blocks or passes specific frequency bands. For low-pass filters, the inductor's high impedance at high frequencies attenuates noise, while low frequencies pass through with minimal loss.
Materials
Core: Ferrite, powdered iron, or air core for high-frequency applications; Wire: Copper or aluminum enameled wire; Insulation: Polyurethane, polyester, or epoxy coating; Housing: Plastic or metal casing for protection and heat dissipation.
Technical Parameters
  • Tolerance ±5% to ±20%
  • Inductance 1 μH to 100 mH
  • DC Resistance 0.01 Ω to 10 Ω
  • Current Rating 0.1 A to 10 A
  • Frequency Range 10 kHz to 10 MHz
  • Temperature Range -40°C to +125°C
Standards
ISO 9001, IEC 60076, DIN EN 61558

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Inductor (for LC filters).

inductor LC filter low-pass filter EMI suppression electronic component industrial engineering ferrite core inductance FMEA electrical equipment Inductor (for LC filters) Inductor (for LC filters) in Electrical Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Low-Pass Filter

An electronic filter that passes signals with a frequency lower than a selected cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency.

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Engineering Analysis

Risks & Mitigation
  • Overheating due to excessive current
  • Core saturation leading to loss of inductance
  • Mechanical damage from vibration or shock
  • Insulation failure causing short circuits
FMEA Triads
Trigger: Exceeding current rating
Failure: Overheating and thermal degradation
Mitigation: Use inductors with adequate current margin and implement thermal management
Trigger: High-frequency operation beyond specified range
Failure: Core losses and reduced efficiency
Mitigation: Select core materials optimized for the operating frequency and monitor performance

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Inductance tolerance typically ±10% as per IEC standards, with tighter tolerances available for precision applications
Test Method
Testing per IEC 60076 for electrical parameters, including inductance measurement using LCR meters and thermal cycling tests for reliability.

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the role of an inductor in a low-pass filter?

In a low-pass filter, the inductor blocks high-frequency noise by providing high impedance at those frequencies, while allowing low-frequency signals to pass through with minimal attenuation, ensuring clean power or signal output.

How do I select an inductor for an LC filter?

Select based on required inductance value, current rating, frequency range, and core material. Consider factors like saturation current, temperature stability, and physical size to match the filter's application and environmental conditions.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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