Heat Sink Profiles
Finned Heat Sink Profile
Standard and custom cross-sections; specify width, height, base, fins and finished length by drawing
Straight-fin aluminum heat sink extrusions
View profile detailsThermal management profile sourcing
Aluminum Extrusion Heat Sinks
Explore the sourcing path for an aluminum extrusion heat sink. Start with a published section when it fits, or share a drawing and thermal operating conditions to discuss a profile requirement. Cooling performance depends on the complete application and must be evaluated against its actual operating conditions.
Check published profilesPublished heat sink profiles
Check the profiles currently listed
Published product entries appear here when they are available in this catalog and assigned to this page. If no entry matches your section, a drawing-led inquiry is a useful next step.
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Choose a sourcing path
Start with the profile information you already have
A reference section or drawing can frame an inquiry. Thermal suitability depends on the operating conditions, airflow and interface of the complete assembly.
- 01
You have a published profile reference
Review the listed product information and identify the dimensions, base and fin geometry, mounting features and finish that your assembly requires.
Check published profiles - 02
You have a drawing or sample
Share the cross-section, envelope dimensions, mounting interface, cut lengths and any machining or inspection notes already defined.
Prepare a drawing-led RFQ - 03
The thermal requirement is still being defined
Summarize the heat source, operating temperatures, environment and cooling method. Keep assumptions visible for the next engineering discussion.
Discuss the requirement
Heat sink selection checklist
Connect the thermal requirement to the profile drawing
Use the checklist to make known conditions explicit. A supplier discussion cannot replace thermal analysis or application validation.
Operating envelope
Record heat source, heat load, ambient temperature, target temperature, duty cycle and any thermal-resistance target available from the project.
Air or liquid flow
Specify passive or forced airflow, flow direction and fan constraints, or provide channel and coolant requirements for a liquid-cooled design.
Section and mounting
Dimension the fin field, base, overall envelope, contact face, fastener pattern, clearances and required orientation.
Material and finished part
Identify alloy or temper and finish when established, plus cut length, machining, tolerances, inspection, quantity and delivery context.
Drawing and dimension requirements
Mark the features that control thermal contact and fit
Provide a dimensioned cross-section and distinguish extrusion geometry from machined or cut features. Define units and the inspection condition for critical dimensions.
Overall envelope
Dimension overall width and height, profile length, installation clearances and the extrusion direction relative to airflow.
Base and fins
Show base thickness, fin thickness, height, count, spacing and any asymmetry or orientation that matters to fit or analysis.
Thermal contact face
Identify the mating face, contact area, flatness and surface expectations, plus any interface material defined by the assembly.
Mounting and machining
Locate holes, slots, tapped features and cut ends. Mark tolerances and note whether each requirement applies before or after finishing.
This guide does not specify universal extrusion tolerances or confirm thermal performance. State required values and applicable standards on the project drawing for review.
Heat sink RFQ example
Separate confirmed details from open thermal questions
A useful inquiry can start with a preliminary drawing. Identify what is known and leave assumptions visible for follow-up review.
Concept illustration only. It is not a published product, manufacturing drawing, dimensional specification or thermal-performance result.
Example inquiry record
- Application
- Equipment type, operating environment and heat source
- Drawing
- Cross-section, envelope, mounting interface and extrusion length
- Thermal conditions
- Heat load, ambient and target temperatures, airflow or coolant
- Finished part
- Alloy / temper, cut lengths, holes, machining and finish
- Supply context
- Quantity, inspection, packing expectation and destination
Resolve the specification gaps
Four details that can change a heat sink requirement
An extrusion profile describes a cross-section, while the heat sink works as part of a thermal assembly. Keep both design conditions and supply details in view.
Heat load and operating conditions are missing
A section name alone cannot establish whether a heat sink suits a particular component, ambient temperature or duty cycle.
Include the heat source, estimated heat load, ambient and target temperatures, and available thermal-resistance requirement when known.
Fin geometry ignores the airflow path
Fin height, spacing, orientation and channel design interact with the available airflow and packaging space.
State natural or forced airflow, flow direction, fan details if applicable, and the space available around the fins.
The mounting interface is not defined
The heat path also depends on contact area, mounting pressure, interface material and the flatness requirements of mating surfaces.
Mark the mounting face, contact area, hole pattern, fasteners and interface material on the drawing when applicable.
The finished part is underspecified
Cutting, machining, finish and inspection can affect fit and should be stated as supply requirements rather than assumed from the profile.
Provide cut lengths, critical dimensions, alloy or temper when specified, finish, quantity, packing and destination.
Application contexts
Extruded heat sinks across industrial equipment
These images illustrate general application contexts. They do not represent supplied products, verified projects or specific thermal results.
Industrial power supplies
Extruded fins can form part of an equipment enclosure or heat sink assembly. Evaluate the section and airflow alongside the heat source and mounting interface.
LED lighting
A finned aluminum housing can combine a lighting structure and heat-spreading surface, subject to the fixture envelope, component contact and operating environment.
Inverters and energy equipment
A heat sink profile can be considered alongside enclosure layout, ambient conditions, natural or forced airflow and the inverter's mounting requirements.
Before you send an RFQ
Send the drawing and the conditions already known
Early information helps frame the requirement. Open thermal questions can remain identified for review instead of being replaced with assumptions.
- A dimensioned cross-section, CAD file, sample or sketch, with units and the extrusion length if known
- Heat source, estimated heat load, ambient and target temperatures, duty cycle and airflow or coolant details when available
- Mounting face, contact area, hole pattern, orientation, clearances and interface material when defined
- Alloy or temper, finish, cut length, machining, critical tolerances, inspection needs, quantity and destination
Inquiry coordination
From application context to a defined sourcing discussion
Keep drawing details, operating conditions and supply requirements connected as the inquiry is reviewed.
01
Share the available requirement
Send the section drawing or sample reference and the operating, mounting, quantity and destination details available today.
02
Identify open specification points
Keep thermal assumptions, critical dimensions, material, finish and downstream processing requirements visible for discussion.
03
Confirm practical next steps
Continue the sourcing conversation after the profile reference, documentation and remaining project questions have been reviewed.
Technical references
Reference material for heat sink profile discussions
These third-party references explain general design and drawing topics. They do not verify a product, service, capability or performance claim from this site.
Hydro: aluminum heat sink profiles
Overview of aluminum heat sinks, finned profiles, air and liquid cooling, and general application considerations.
Hydro: heat sink design considerations
Discussion of airflow, fin and channel design, surface treatment, thermal resistance and material interfaces.
The Aluminum Association: extrusion drawing standards
Information about its publication describing a uniform method for preparing aluminum extrusion profile drawings.
Heat sink sourcing questions
Questions to resolve before sourcing an extruded heat sink
General answers to help prepare a more complete profile and thermal requirement.
It is a heat sink profile in which the base and fins are formed as an aluminum extrusion. The section geometry is only one part of the thermal assembly; contact, airflow and operating conditions also matter.
Start a heat sink inquiry
Discuss an aluminum extrusion heat sink requirement
Share your drawing or profile reference and the thermal, mounting, finishing and supply details already available. The inquiry can identify open questions for the next sourcing discussion.
Your requirement will be used to coordinate the next sourcing step.
Specification requirements reviewedQuantity and delivery assessed per projectDrawings and documents by emailInspection requirements confirmed per project