Heat Sink Structure: Base Thickness 3-10 mm, Fin Pitch 2-10 mm

Component Specifications

Definition

A heat sink structure is a passive thermal management component designed to transfer heat from a heat-generating source (e.g., CPU, power transistor) to a fluid medium (air or liquid), thereby reducing the temperature of the source. It typically consists of a base plate and extended surfaces (fins) that increase surface area for convective heat transfer. The structure may include features such as heat pipes, vapor chambers, or pin fins to enhance thermal performance. It is commonly used in electronics cooling, automotive systems, and industrial machinery.

Working Principle

Heat sinks operate on the principles of thermal conduction and convection. Heat from the source conducts into the base plate, then spreads to the fins. The large surface area of the fins allows heat to dissipate into the surrounding air via natural or forced convection (using fans). Some designs incorporate heat pipes that use phase change to transfer heat efficiently.

Materials

Common materials include aluminum (alloys 6061, 6063) for lightweight and good thermal conductivity, copper (C1100) for higher conductivity, and advanced composites like graphite or diamond for specialized applications. Surface treatments may include anodizing, nickel plating, or black coating to enhance emissivity.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Fin Pitch	2-10 mm
Base Thickness	3-10 mm
Overall Dimensions	Custom
Thermal Resistance	0.1-5.0 °C/W
Max Operating Temperature	200 °C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 9001, DIN 5510

Parent Products

This component is used in the following industrial products

Heat Resistance

A material's ability to withstand high temperatures without significant degradation or failure.

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Engineering Analysis

Risks & Mitigation

Insufficient thermal contact leading to high thermal resistance
Fin damage or clogging reducing airflow
Corrosion in humid environments

FMEA Triads

Trigger: Poor surface flatness or insufficient thermal paste
Failure: High thermal resistance, overheating
Mitigation: Ensure flatness within 0.05 mm, use high-quality thermal interface material

Trigger: Fin blockage by dust or debris
Failure: Reduced airflow, increased temperature
Mitigation: Regular cleaning, use of dust filters

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.1 mm on critical dimensions

Test Method

Thermal resistance measurement per ASTM D5470

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

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Inspection readiness

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Supplier transparency

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Manufacturers of Heat Sink Structure

Manufacturer profiles associated with Heat Sink Structure.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the purpose of fins on a heat sink?

Fins increase the surface area available for heat transfer to the surrounding air, improving convective cooling efficiency.

How do I choose between aluminum and copper heat sinks?

Aluminum is lighter and cheaper with good thermal conductivity; copper offers higher conductivity but is heavier and more expensive. Choose based on weight, cost, and thermal requirements.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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.

Heat Sink Structure