INDUSTRY COMPONENT

Magnet Assembly

Precision magnetic assembly for transducer voice coil actuation in handset audio systems

Component Specifications

Definition
A magnet assembly is a critical electromechanical component in handset transducers that generates a controlled magnetic field to drive the voice coil, converting electrical signals into mechanical vibrations for sound reproduction. It typically consists of permanent magnets, pole pieces, and a magnetic circuit structure optimized for compact audio applications.
Working Principle
Operates on electromagnetic induction principles where alternating current through the voice coil interacts with the permanent magnetic field, creating Lorentz forces that move the diaphragm to produce sound waves.
Materials
Neodymium iron boron (NdFeB) magnets, soft iron pole pieces, steel yokes, epoxy adhesives, and protective nickel-copper-nickel plating
Technical Parameters
  • Weight 0.5-2.0 g
  • Impedance 8-32 Ω
  • Dimensions Φ8-15mm × 2-4mm
  • Resonant Frequency 300-800 Hz
  • Magnetic Flux Density 0.8-1.2 T
  • Operating Temperature -20°C to 80°C
Standards
IEC 60268-5, ISO 11904-1, JIS C 5502

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Magnet Assembly.

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Magnetic field degradation over time
  • Demagnetization from high temperatures
  • Corrosion in humid environments
  • Mechanical resonance interference
  • Magnetic particle contamination
FMEA Triads
Trigger: Thermal exposure beyond material limits
Failure: Partial demagnetization reducing magnetic flux
Mitigation: Implement temperature monitoring during assembly and use thermal barrier coatings
Trigger: Improper adhesive application
Failure: Magnet detachment during vibration
Mitigation: Automated adhesive dispensing with vision inspection and shear strength testing

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.05mm dimensional, ±5% magnetic flux density, ±2° angular alignment
Test Method
Gauss meter measurements, impedance testing, frequency response analysis, thermal cycling, vibration testing per IEC 60068-2-6

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.

Related Components

Memory Module
Memory module for Industrial IoT Gateway data storage and processing
Storage Module
Industrial-grade storage module for data logging and firmware in IoT gateways
Ethernet Controller
Industrial Ethernet controller for real-time data transmission in Industrial IoT Gateways.
Serial Interface
Serial interface for industrial data transmission between IoT gateways and legacy equipment using RS-232/422/485 protocols.

Frequently Asked Questions

What is the primary function of a magnet assembly in handset transducers?

The magnet assembly creates a stable, concentrated magnetic field that interacts with the voice coil to convert electrical audio signals into precise mechanical diaphragm movements for sound generation.

Why are neodymium magnets preferred in modern handset transducers?

Neodymium magnets provide the highest magnetic energy density available, allowing for smaller, lighter assemblies while maintaining strong magnetic fields essential for high-quality audio reproduction in compact devices.

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.

Request Manufacturing Insight for Magnet Assembly

MAC Core Magnetic Core (for transformer)