Industry-Verified Manufacturing Data (2026)

Heat Sink

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Heat Sink 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 Heat Sink is characterized by the integration of Base Plate and Cooling Fins. In industrial production environments, manufacturers listed on CNFX commonly emphasize Aluminum alloy construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A passive heat exchanger that transfers heat generated by LED components to a fluid medium, typically air, to prevent overheating and ensure optimal performance and longevity.

Product Specifications

Technical details and manufacturing context for Heat Sink

Definition
In LED Smart Lighting systems, a heat sink is a critical thermal management component designed to dissipate excess heat produced by LED chips and drivers. It absorbs thermal energy from heat-generating elements and transfers it to the surrounding environment through conduction, convection, and radiation, maintaining safe operating temperatures that prevent thermal degradation, color shift, and premature failure of the lighting system.
Working Principle
Heat generated by LED components is conducted through thermal interface materials into the heat sink's base. The heat then spreads through the heat sink's conductive material (typically aluminum) and is transferred to extended surfaces (fins). Air flowing over these fins (via natural convection or forced airflow) carries the heat away, completing the heat dissipation cycle and cooling the LED system.
Common Materials
Aluminum alloy, Copper, Thermal interface material (TIM)
Technical Parameters
  • Overall dimensions including length, width, height, and fin spacing (mm) Customizable
Components / BOM
  • Base Plate Part
    Provides direct contact surface for heat absorption from LED components
    Material: Aluminum or copper
  • Cooling Fins Part
    Extends surface area to maximize heat transfer to surrounding air
    Material: Aluminum alloy
  • Mounting Holes Part
    Secures heat sink to LED PCB or housing
    Material: Same as base material

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Heat Sink.

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: Atmospheric to 1.5 bar (for forced air convection systems)
flow rate: 0.5 to 5.0 m/s (air velocity for optimal thermal performance)
temperature: -40°C to 150°C (operating range for typical aluminum/copper heat sinks)
slurry concentration: Not applicable (designed for clean air/gas media only)
Media Compatibility
✓ Ambient air cooling ✓ Forced air convection systems ✓ Dry inert gases (e.g., nitrogen)
Unsuitable: Corrosive or conductive fluids (e.g., saltwater, acids, metal slurries)
Sizing Data Required
  • LED power dissipation (Watts)
  • Maximum allowable junction temperature (°C)
  • Available airflow/velocity (m/s or CFM)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Thermal fatigue cracking
Cause: Repeated thermal cycling from startup/shutdown or load variations causes expansion/contraction stresses, leading to microcracks in fins or base material, especially at stress concentrators like joints or bends.
Fouling and airflow blockage
Cause: Accumulation of dust, debris, or contaminants on fins reduces heat transfer efficiency by insulating surfaces and restricting airflow, often due to poor environmental control or inadequate filtration in intake air.
Maintenance Indicators
  • Audible increase in fan noise or vibration indicating airflow obstruction or bearing wear in active cooling systems
  • Visible discoloration, warping, or localized hot spots on the heat sink surface detected via thermal imaging or visual inspection
Engineering Tips
  • Implement regular cleaning schedules using compressed air or non-abrasive methods to prevent fouling, and apply anti-corrosion coatings if exposed to harsh environments
  • Ensure proper mounting pressure and use thermal interface materials (TIMs) with appropriate conductivity and stability to maintain optimal thermal contact and reduce thermal cycling stresses

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 Quality Management Systems ANSI/ASME Y14.5-2018 Dimensioning and Tolerancing DIN EN 1676:1997 Aluminium and aluminium alloys - Extruded rod/bar, tube and profiles
Manufacturing Precision
  • Base Flatness: ≤0.05mm per 25mm length
  • Fin Thickness: ±0.1mm
Quality Inspection
  • Thermal Performance Test (ASTM D5470)
  • Dimensional Verification (CMM Measurement)

Factories Producing Heat Sink

Verified manufacturers with capability to produce this product in China

✓ 94% Supplier Capability Match Found

T Technical Director from United Arab Emirates Feb 21, 2026
★★★★★
"As a professional in the Computer, Electronic and Optical Product Manufacturing sector, I confirm this Heat Sink meets all ISO standards."
Technical Specifications Verified
P Project Engineer from Australia Feb 18, 2026
★★★★☆
"Standard OEM quality for Computer, Electronic and Optical Product Manufacturing applications. The Heat Sink arrived with full certification. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
S Sourcing Manager from Singapore Feb 15, 2026
★★★★★
"Great transparency on the Heat Sink components. Essential for our Computer, Electronic and Optical Product Manufacturing supply chain."
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.”

10 sourcing managers are analyzing this specification now. Last inquiry for Heat Sink from Germany (37m ago).

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Frequently Asked Questions

What materials are used in this heat sink and why?

This heat sink uses aluminum alloy for lightweight, cost-effective heat dissipation, copper for superior thermal conductivity in critical areas, and thermal interface material (TIM) to ensure optimal heat transfer between components and the heat sink.

How does this heat sink prevent LED overheating?

The heat sink acts as a passive heat exchanger, transferring thermal energy from LED components to the surrounding air through its base plate and cooling fins. This maintains safe operating temperatures, preventing performance degradation and extending LED lifespan.

What components are included in the BOM for installation?

The bill of materials includes a base plate for direct component contact, cooling fins to maximize surface area for heat dissipation, and mounting holes for secure installation in electronic and optical manufacturing applications.

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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