Heat Sink Fins: Fin Height 5-50 mm, Fin Thickness 0.5-2.0 mm

Component Specifications

Definition

Heat sink fins are critical thermal management components that increase the surface area of a heat sink to enhance heat dissipation. They work by transferring thermal energy from a heat-generating source (like CPUs, power transistors, or industrial machinery) to the surrounding environment through conduction, convection, and radiation. The design, spacing, height, and material of fins directly impact thermal resistance, airflow dynamics, and overall cooling efficiency in applications ranging from electronics to industrial equipment.

Working Principle

Heat sink fins operate on the principles of thermal conduction and convection. Heat from the source conducts through the base into the fins, then dissipates into the surrounding air via forced or natural convection. The increased surface area provided by fins maximizes heat transfer by exposing more material to airflow, reducing thermal resistance and maintaining optimal operating temperatures.

Materials

Typically aluminum alloys (6061, 6063 for balance of conductivity and cost), copper (C11000 for maximum conductivity), or advanced composites. May include anodized coatings for corrosion resistance or thermal interface materials at mounting surfaces.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Fin Height	5-50 mm
Fin Spacing	1.5-10 mm
Fin Thickness	0.5-2.0 mm
Base Thickness	3-15 mm
Surface Finish	Anodized, bare, or coated
Thermal Conductivity	150-400 W/m·K

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 13732-1, DIN EN 60721-3-3

Parent Products

This component is used in the following industrial products

Chassis and Heat Sink

The structural enclosure and thermal management component of an industrial power supply unit.

View Product Details

Engineering Analysis

Risks & Mitigation

Thermal fatigue from cyclic heating/cooling
Corrosion in harsh environments
Mechanical damage from vibration or impact
Insufficient cooling leading to component failure

FMEA Triads

Trigger: Poor thermal interface between fin base and heat source
Failure: Reduced heat transfer efficiency leading to overheating
Mitigation: Use thermal interface materials, ensure flat mounting surfaces, proper torque during assembly

Trigger: Corrosion due to environmental exposure
Failure: Degraded thermal performance and structural integrity
Mitigation: Apply protective coatings, select corrosion-resistant materials, implement regular maintenance

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.1 mm for critical dimensions, flatness within 0.05 mm/mm

Test Method

Thermal resistance testing per MIL-STD-810, airflow simulation, infrared thermography

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

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Heat Sink Fins

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Ecotherm

Dongguan, Guangdong, CN

Also makes: Aluminum Heat Sink

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “Wave Heat Sink with Fins for Hole Clearance”
View source page ↗ ecothermgroup.com · checked 2026-09-17

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

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 primary function of heat sink fins?

To increase surface area for more efficient heat dissipation from electronic or mechanical components.

How do fin spacing and height affect cooling performance?

Closer spacing increases surface area but may restrict airflow; taller fins enhance dissipation but require stronger base support. Optimal design balances these factors for specific airflow conditions.

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 Fins