Industry-Verified Manufacturing Data (2026)

Coil Assembly

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Coil Assembly used in the Computer, Electronic and Optical Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Coil Assembly is characterized by the integration of Coil Winding and Core. In industrial production environments, manufacturers listed on CNFX commonly emphasize Copper wire construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A precision electromagnetic component within a detection sensor head that generates or senses magnetic fields for detection purposes.

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Product Specifications

Technical details and manufacturing context for Coil Assembly

Definition
The coil assembly is a critical sub-component of a detection sensor head, typically consisting of wound conductive wire around a core material. It functions as the electromagnetic transducer that either generates a magnetic field for active sensing or detects changes in magnetic fields for passive sensing applications. Within the detection sensor head, it converts electrical signals to magnetic fields or vice versa, enabling the sensor to detect metallic objects, measure distances, or identify material properties.
Working Principle
The coil assembly operates on electromagnetic principles. When electrical current flows through the wound conductor, it generates a magnetic field (transmitting mode). Conversely, when exposed to changing magnetic fields from external sources, it induces an electrical voltage in the coil (receiving mode). In detection sensors, this electromagnetic interaction allows for non-contact sensing of metallic objects, position detection, or material characterization.
Common Materials
Copper wire, Ferrite core, Insulation material, Protective housing
Technical Parameters
  • Coil diameter and winding dimensions critical for electromagnetic performance (mm) Customizable
Components / BOM
  • Coil Winding
    Conductive element that carries electrical current to generate magnetic fields
    Material: Copper or aluminum wire
  • Core
    Concentrates and directs magnetic flux for enhanced sensitivity
    Material: Ferrite, iron powder, or air core
  • Bobbin
    Structural support for winding the coil wire in precise layers
    Material: Plastic or ceramic
  • Terminals
    Electrical connection points for integrating with sensor circuitry
    Material: Brass or copper alloy
Engineering Reasoning
0.5-5.0 mT magnetic field strength, -40°C to +125°C ambient temperature, 3-24 VDC excitation voltage
Insulation breakdown at >500 VDC, magnetic saturation at >7.5 mT, thermal degradation at >150°C core temperature
Design Rationale: Curie temperature transition at 150°C causing permanent magnetic property loss, dielectric breakdown at 15 kV/mm insulation stress, magnetostrictive fatigue at >10⁷ cycles
Risk Mitigation (FMEA)
Trigger Electromagnetic interference from adjacent power conductors carrying >100 A at 60 Hz
Mode: Induced eddy currents exceeding 2 A causing 85°C localized heating and insulation degradation
Strategy: Mu-metal shielding with 40 dB attenuation at 50-1000 Hz, twisted-pair wiring with 1 mm pitch
Trigger Mechanical vibration at 120 Hz resonance frequency with >5 g acceleration
Mode: Wire fatigue fracture at stress concentration points after 2×10⁸ cycles
Strategy: Epoxy potting with 3.5 GPa modulus, strain relief loops with 8 mm minimum bend radius

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Coil Assembly.

precision electromagnetic coil assembly detection sensor coil winding ferrite core coil for electronics magnetic field sensing coil component industrial sensor coil assembly

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Detection Sensor Head
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Actuator (Solenoid/Pneumatic)
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Torque Motor / Solenoid
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Feedback Sensor (e.g., LVDT)
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Torque Motor
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Force generation unit
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Electromagnetic Brake Assembly
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Safety Output Relays/Contacts
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Solenoid/Piezoelectric Actuator
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Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 10 bar
other spec: Max magnetic field strength: 500 mT, Vibration tolerance: 5g RMS
temperature: -40°C to +125°C
Media Compatibility
✓ Non-corrosive gases ✓ Clean liquids ✓ Dry particulate solids
Unsuitable: Conductive slurries with high metal content
Sizing Data Required
  • Required detection distance
  • Target object material properties
  • Available power supply voltage

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Coil deformation or collapse
Cause: Thermal stress from rapid temperature changes or over-temperature conditions, leading to material fatigue and loss of structural integrity.
Internal fouling or scaling
Cause: Accumulation of mineral deposits, corrosion products, or biological growth due to poor water quality or inadequate filtration, reducing heat transfer efficiency.
Maintenance Indicators
  • Audible hissing or gurgling sounds indicating internal flow restriction or air entrapment
  • Visible external corrosion, leaks at connections, or abnormal condensation patterns suggesting compromised integrity
Engineering Tips
  • Implement regular water treatment and filtration to maintain fluid cleanliness and prevent scaling/corrosion
  • Install temperature monitoring with alarms to prevent thermal shock and ensure operation within design limits

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality management systems ASTM A480/A480M - Standard Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip CE Marking - Conformity with EU safety, health, and environmental requirements
Manufacturing Precision
  • Coil Diameter: +/- 1% of nominal diameter
  • Wire Gauge: +/- 0.01mm
Quality Inspection
  • Dimensional Verification using Coordinate Measuring Machine (CMM)
  • Electrical Resistance Test

Factories Producing Coil Assembly

Verified manufacturers with capability to produce this product in China

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✓ 93% Supplier Capability Match Found

T Technical Director from Germany Jan 30, 2026
★★★★★
"Reliable performance in harsh Computer, Electronic and Optical Product Manufacturing environments. No issues with the Coil Assembly so far."
Technical Specifications Verified
P Project Engineer from Brazil Jan 27, 2026
★★★★☆
"Testing the Coil Assembly now; the technical reliability results are within 1% of the laboratory datasheet. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
S Sourcing Manager from Canada Jan 24, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

13 sourcing managers are analyzing this specification now. Last inquiry for Coil Assembly from Poland (23m ago).

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Frequently Asked Questions

What applications are coil assemblies used for in optical product manufacturing?

Coil assemblies are critical components in detection sensors for position sensing, proximity detection, and motion control systems within optical and electronic devices.

How does the ferrite core material affect coil performance?

Ferrite cores enhance magnetic flux density and efficiency, providing stable performance with minimal energy loss, making them ideal for precision detection applications.

What specifications should I consider when selecting a coil assembly?

Key specifications include inductance value, resistance, operating temperature range, wire gauge, insulation class, and dimensional tolerances for your specific sensor design.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Computer, Electronic and Optical Product Manufacturing sector.

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