Industry-Verified Manufacturing Data (2026)

Electrical Feedthrough

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Electrical Feedthrough used in the Electrical Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Electrical Feedthrough is characterized by the integration of Metal Housing/Flange and Insulator/Seal Body. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A sealed component that allows electrical conductors to pass through the wall of a sealed enclosure while maintaining the enclosure's integrity.

Product Specifications

Technical details and manufacturing context for Electrical Feedthrough

Definition
An electrical feedthrough is a critical sealing component used in sealed enclosures to enable electrical power, signals, or data transmission to enter or exit the enclosure without compromising its hermetic seal, pressure rating, or environmental protection. It serves as the interface between internal electrical systems and external connections.
Working Principle
The feedthrough creates a permanent, leak-tight seal around one or more electrical conductors (wires, pins, or terminals) as they pass through an opening in the enclosure wall. This is typically achieved using glass-to-metal seals, ceramic-to-metal seals, or specialized epoxy/polymer potting compounds that bond to both the conductor and the enclosure material, preventing the passage of gases, liquids, or contaminants.
Common Materials
Stainless Steel, Glass, Ceramic (Alumina), Copper Alloy
Technical Parameters
  • Diameter of the feedthrough body or mounting flange (mm) Per Request
Components / BOM
  • Metal Housing/Flange
    Provides structural mounting to the enclosure wall and forms part of the seal
    Material: Stainless Steel
  • Insulator/Seal Body
    Electrically isolates conductors and creates the hermetic seal
    Material: Glass or Ceramic
  • Conductor Pins/Terminals
    Carries electrical current or signals through the seal
    Material: Copper Alloy or Nickel-Iron Alloy
  • Sealing Interface
    Bonding layer between insulator and metal components
    Material: Specialized Glass Frit or Brazing Alloy
Engineering Reasoning
0-1000 VDC, -40°C to +150°C, 0-10 bar differential pressure
Dielectric breakdown at >15 kV/mm electric field strength, seal failure at >20 bar differential pressure, thermal degradation at >200°C
Design Rationale: Dielectric breakdown via Paschen's law at reduced pressure, elastomer seal compression set exceeding 25% at elevated temperature, metal fatigue at cyclic pressure exceeding yield strength
Risk Mitigation (FMEA)
Trigger Partial discharge exceeding 5 pC at operating voltage
Mode: Insulation carbon tracking leading to dielectric breakdown
Strategy: Corona-resistant insulation materials with >200 kV/mm dielectric strength and triple-point shielding
Trigger Thermal cycling exceeding 1000 cycles between -40°C and +150°C
Mode: Hermetic seal failure via metal-glass interface cracking
Strategy: Matched coefficient of expansion materials (Kovar-glass) with graded seals and compressive preload

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Electrical Feedthrough.

Applied To / Applications

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

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Vacuum to 10 bar (standard), up to 100 bar (high-pressure variants)
leak rate: ≤ 1×10⁻⁹ mbar·L/s (helium leak tested)
temperature: -40°C to +200°C (standard), up to +400°C (high-temp variants)
voltage rating: Up to 15 kV (standard), higher for specialized designs
Media Compatibility
✓ Vacuum systems (e.g., semiconductor processing chambers) ✓ High-pressure chemical reactors (e.g., with inert gases or non-corrosive liquids) ✓ Food/beverage processing equipment (e.g., steam or CIP environments)
Unsuitable: Highly corrosive media (e.g., concentrated acids, halogens) without specialized metallurgy/seals
Sizing Data Required
  • Conductor count and diameter (to determine feedthrough size and pin configuration)
  • Envelope constraints (mounting flange dimensions and available space)
  • Electrical requirements (voltage, current, and insulation class)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Insulation breakdown
Cause: Thermal cycling, moisture ingress, or contamination leading to dielectric failure and short circuits.
Seal leakage
Cause: Mechanical stress, thermal expansion mismatch, or seal degradation allowing fluid or gas ingress.
Maintenance Indicators
  • Visible arcing, sparking, or discoloration around the feedthrough
  • Audible humming, buzzing, or crackling sounds indicating electrical discharge
Engineering Tips
  • Implement regular thermographic inspections to detect hot spots and prevent thermal degradation
  • Use proper torque specifications during installation and apply anti-seize compounds to prevent galvanic corrosion

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 (Quality Management Systems) IEC 60601-1 (Medical Electrical Equipment - General Requirements) UL 94 (Standard for Safety of Flammability of Plastic Materials)
Manufacturing Precision
  • Bore Diameter: +/-0.01mm
  • Parallelism: 0.05mm across mating surfaces
Quality Inspection
  • High Voltage Dielectric Withstand Test
  • Helium Leak Test (Hermetic Sealing Verification)

Factories Producing Electrical Feedthrough

Verified manufacturers with capability to produce this product in China

✓ 95% Supplier Capability Match Found

S Sourcing Manager from Brazil Jan 04, 2026
★★★★★
"Standard OEM quality for Electrical Equipment Manufacturing applications. The Electrical Feedthrough arrived with full certification."
Technical Specifications Verified
P Procurement Specialist from Canada Jan 01, 2026
★★★★☆
"Great transparency on the Electrical Feedthrough components. Essential for our Electrical Equipment Manufacturing supply chain. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from United States Dec 29, 2025
★★★★★
"The Electrical Feedthrough we sourced perfectly fits our Electrical Equipment Manufacturing production line requirements."
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.”

7 sourcing managers are analyzing this specification now. Last inquiry for Electrical Feedthrough from Vietnam (1h ago).

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Frequently Asked Questions

What materials are used in electrical feedthroughs for maximum durability?

Our electrical feedthroughs utilize premium materials including stainless steel for corrosion resistance, glass or ceramic (alumina) for superior insulation, and copper alloy for optimal conductivity and longevity in demanding environments.

How do electrical feedthroughs maintain enclosure integrity?

Electrical feedthroughs feature precision-engineered sealing interfaces and insulator bodies that create hermetic seals, preventing leaks while allowing electrical conductors to pass through enclosure walls without compromising pressure or environmental protection.

What are the key components in an electrical feedthrough assembly?

A complete electrical feedthrough consists of conductor pins/terminals for electrical connection, an insulator/seal body for isolation, a metal housing/flange for mounting, and a sealing interface that maintains the enclosure's integrity against environmental factors.

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.

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