Structured Manufacturing Data (2026)

Spark Gap Assembly

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Spark Gap 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 Spark Gap Assembly is characterized by the integration of Fixed Electrode and Adjustable Electrode. In industrial production environments, manufacturers listed on CNFX commonly emphasize Tungsten or Tungsten Alloy (Electrodes) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A precision electrical component that creates a controlled spark discharge for ignition or timing purposes.

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Product Specifications

Technical details and manufacturing context for Spark Gap Assembly

Definition
The Spark Gap Assembly is a critical component within the EFO (Electronic Flame-Off) Unit, responsible for generating a precisely timed and controlled high-voltage spark. This spark is used to initiate a flame or thermal process, such as cutting or sealing synthetic fibers in textile manufacturing. The assembly ensures reliable, repeatable ignition by maintaining a specific gap distance between electrodes, across which the electrical discharge occurs.
Working Principle
The assembly functions by applying a high voltage across two electrodes separated by a precise air gap (the spark gap). When the voltage exceeds the dielectric strength of the gap, the air ionizes, creating a conductive plasma channel that allows a sudden discharge of electrical energy—a spark. This spark generates intense localized heat, which is utilized by the EFO unit for its intended process, such as melting and cutting a thread.
Common Materials
Tungsten or Tungsten Alloy (Electrodes), Ceramic or High-Temperature Polymer (Insulator/Housing), Stainless Steel (Mounting Hardware)
Technical Parameters
  • The critical distance between the two electrodes, which determines the breakdown voltage and spark characteristics. (mm) Per Request
Components / BOM
  • Fixed Electrode Part
    One stationary electrode that forms one side of the spark gap.
    Material: Tungsten Alloy
  • Adjustable Electrode
    A movable electrode that allows for precise setting and maintenance of the gap distance.
    Material: Tungsten Alloy
  • Insulating Housing Part
    Encases and electrically isolates the electrodes, providing structural support and alignment.
    Material: High-Alumina Ceramic
  • Adjustment Mechanism
    A screw or micrometer device for fine-tuning the gap distance between electrodes.
    Material: Stainless Steel
  • High-Voltage Terminal Part
    Connection point for the high-voltage supply wire from the EFO unit's power system.
    Material: Brass or Copper Alloy

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Spark Gap Assembly.

EFO Spark Gap Ignition Gap Assembly high voltage spark gap assembly tungsten electrode spark gap adjustable spark gap component ceramic insulated spark gap precision ignition timing assembly

Applied To / Applications

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

EFO (Electronic Flame-Off) Unit
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 100 psi
temperature: -40°C to +150°C
spark energy: 10mJ to 5J
voltage range: 500V to 30kV
Media Compatibility
✓ Natural gas/air mixtures ✓ Hydrocarbon fuel vapors ✓ Dry inert gases
Unsuitable: Corrosive or conductive fluids (e.g., saltwater, acids)
Sizing Data Required
  • Required breakdown voltage (kV)
  • Spark energy requirement (mJ/J)
  • Electrode gap distance (mm)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Electrode Erosion
Cause: High-voltage arcing causing material transfer and pitting on electrode surfaces, typically due to excessive spark energy, improper gap setting, or contamination
Insulation Breakdown
Cause: Degradation of dielectric materials (ceramic, glass, or polymer) from thermal cycling, moisture ingress, or surface tracking from carbon deposits
Maintenance Indicators
  • Inconsistent spark pattern or audible variation in discharge frequency
  • Visible discoloration, carbon tracking, or physical damage on insulator surfaces
Engineering Tips
  • Implement precision gap monitoring and adjustment protocols using laser or optical measurement tools to maintain optimal electrode separation
  • Establish controlled environment protocols including humidity regulation, particulate filtration, and scheduled dielectric strength testing of insulation components

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality Management Systems ANSI C37.60 - High-Voltage Air Switches IEC 60099-4 - Surge Arresters for AC Systems
Manufacturing Precision
  • Electrode Gap: +/-0.1mm
  • Parallelism of Electrodes: 0.05mm
Quality Inspection
  • High-Potential (Hi-Pot) Dielectric Test
  • Visual Inspection for Surface Defects and Contamination

Factories Producing Spark Gap Assembly

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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 are the key applications for spark gap assemblies in electronic manufacturing?

Spark gap assemblies are critical for ignition systems, timing circuits, surge protection, and high-voltage switching in electronic and optical equipment where controlled spark discharge is required.

Why are tungsten electrodes preferred in spark gap assemblies?

Tungsten offers superior heat resistance, high melting point, and excellent electrical conductivity, ensuring consistent spark performance and extended component lifespan in demanding applications.

How does the adjustable electrode mechanism improve spark gap performance?

The adjustable electrode allows precise calibration of spark distance, enabling optimization of breakdown voltage, spark consistency, and timing accuracy for specific electronic system requirements.

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 basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Computer, Electronic and Optical Product Manufacturing.

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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