Heat Sink Blog

Heat Sink Design Options

Heat Sink Design Options

Summary - This article compares three categories of heat sink design: solid metal base, embedded heat pipe base, and vapor chamber base. Each heat sink design is compared on the basis of performance, weight, and cost. Engineers are regularly tasked with heat sink...

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Heat Pipe Heat Sink Comparison

Heat Pipe Heat Sink Comparison

Summary: This article compares the cost and performance trade-off among 5 different heat pipe heat sink designs: U-shaped heat pipes with base plate (Cu & Al), direct contact heat pipes, U-shaped vapor chamber, and 3D vapor chamber. Regardless of industry or...

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Vapor Chamber vs Heat Pipe Cheat Sheet

Vapor Chamber vs Heat Pipe Cheat Sheet

  In the battle of two-phase devices, vapor chamber vs heat pipe, there’s no clear winner. Each has attributes that make one superior to the other. This engineering guide covers two-phase differences and usage rules of thumb. Its goal is to be concise while...

read more
How Do Heat Pipes Work | Heat Pipes 101

How Do Heat Pipes Work | Heat Pipes 101

  This article covers how heat pipes and vapor chambers work along with typical uses and configuration options.  Further, it is designed to be a quick read with links to detailed information throughout the text.   How Do Heat Pipes Work? There are three...

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Heat Pipe Thermal Conductivity

Heat Pipe Thermal Conductivity

    Knowing heat pipe thermal conductivity is important when performing Excel or CFD modeling of two-phase devices integrated into a heat sink assembly. In theory, heat pipe thermal conductivity can range from 4,000 to 100,000 W/m-K. In reality, the range...

read more
Heat Pipe Design Guide

Heat Pipe Design Guide

  The focus of this heat pipe design guide is on sintered copper heat pipes (w/water) for electronics cooling applications. This typically translates to dissipated heat of between 20-200 watts (less if power density is high) and power density up to around 25...

read more
Heat Pipe Calculator Use Instructions

Heat Pipe Calculator Use Instructions

  Our online heat pipe calculator provides the following heat pipe performance data: heat pipe thermal conductivity by diameter, heat pipe carrying capacity (Qmax) by diameter & orientation, and delta-T from one end of the heat pipe to the other. From this...

read more
Heat Sink Calculator Use Instructions

Heat Sink Calculator Use Instructions

  How to use the online heat sink calculator to determine heat sink performance for a thermal solution using a solid metal base compared to a vapor chamber base. Input variables include fin height, fin thickness, heat source power, and heat sink dimensions. Since...

read more
Heat Sink Size Calculator Use Instructions

Heat Sink Size Calculator Use Instructions

  How to use the online heat sink size calculator used in the early stages of heat sink design. With the exception of choosing the correct "volumetric thermal resistance”, this is probably our most straight forward calculator. Here's the link to the calculator....

read more
Heat Pipes & Vapor Chambers – What’s the Difference?

Heat Pipes & Vapor Chambers – What’s the Difference?

  At some point in a thermal system design project it may become apparent that the tried and true methods of increasing thermal efficiency - solid base, fin & fan - just aren’t sufficient. Reasons include: Keep out zones prohibit a larger heat sink (thicker...

read more
Vapor Chamber Cooling Design Guide

Vapor Chamber Cooling Design Guide

  Electronics cooling using a vapor chamber is a fairly common design choice. This vapor chamber design guide is for the most prevalent types of applications: CPU/ASIC to amplifier applications with power ranging from around 20-250 watts, power density greater...

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Vapor Chamber | Heatpipe Alternative

Vapor Chamber | Heatpipe Alternative

  A vapor chamber is an effective heatpipe alternative that boosts heat sink performance by  5-10 oC for typical electronics cooling applications. Vapor chambers are a simple, relatively cost-effective, and very dependable device that can be used alone or in...

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Heat Pipe Design Oddities

Heat Pipe Design Oddities

  Heat pipe design is generally a straightforward process, but sometimes custom requirements can yield atypical vapor chamber or heat pipe designs. I won’t be focusing on the specifics of the application or perhaps even the operating parameters. Rather, I’ll talk...

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Fundamentals of Thermal Resistance

Fundamentals of Thermal Resistance

  Today’s guest blog on the fundamentals of thermal resistance is from Dr. James Stevens, Professor Mechanical Engineering at the University of Colorado. Dr. Stevens specializes in numerical and analytical heat transfer analysis covering both steady-state and...

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Rugged Electronics | Standards & Heat Pipe Solutions

Rugged Electronics | Standards & Heat Pipe Solutions

  The challenges faced by thermal engineers tasked with cooling rugged electronics are often extensive. This blog post is meant to provide an overview of ‘rugged’ standards as well as address some thermal management techniques being used. Electronics for both...

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Clean Heat Sink of Dust Bunnies

Clean Heat Sink of Dust Bunnies

  My current notebook is about 18 months old and had been running slower and slower for a few months. It was also noticeably hotter causing the fan to run almost continuously. I knew it was that time. About every year and a half I have to take apart my PC to...

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Thermal Test Chips

Thermal Test Chips

  To meet aggressive product time-to-market goals, electrical and mechanical engineers need to work concurrently to envision, model and validate an enormous array of interdependent system requirements. While there’s no doubt that robust thermal modeling of both...

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Using Fans & Heat Pipes to Cool Smartphones

Using Fans & Heat Pipes to Cool Smartphones

  I recently read an interesting article that explored the practical reasons behind the use of different materials for smartphone enclosures: polycarbonate, glass, and metal. They included tactile preferences, radio attenuation, and surprisingly, thermal...

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Heat Sink Design Options

Heat Sink Design Options

Summary - This article compares three categories of heat sink design: solid metal base, embedded heat pipe base, and vapor chamber base. Each heat sink design is compared on the basis of performance, weight, and cost. Engineers are regularly tasked with heat sink...

read more
Heat Pipe Heat Sink Comparison

Heat Pipe Heat Sink Comparison

Summary: This article compares the cost and performance trade-off among 5 different heat pipe heat sink designs: U-shaped heat pipes with base plate (Cu & Al), direct contact heat pipes, U-shaped vapor chamber, and 3D vapor chamber. Regardless of industry or...

read more
Vapor Chamber vs Heat Pipe Cheat Sheet

Vapor Chamber vs Heat Pipe Cheat Sheet

  In the battle of two-phase devices, vapor chamber vs heat pipe, there’s no clear winner. Each has attributes that make one superior to the other. This engineering guide covers two-phase differences and usage rules of thumb. Its goal is to be concise while...

read more
How Do Heat Pipes Work | Heat Pipes 101

How Do Heat Pipes Work | Heat Pipes 101

  This article covers how heat pipes and vapor chambers work along with typical uses and configuration options.  Further, it is designed to be a quick read with links to detailed information throughout the text.   How Do Heat Pipes Work? There are three...

read more
Heat Pipe Thermal Conductivity

Heat Pipe Thermal Conductivity

    Knowing heat pipe thermal conductivity is important when performing Excel or CFD modeling of two-phase devices integrated into a heat sink assembly. In theory, heat pipe thermal conductivity can range from 4,000 to 100,000 W/m-K. In reality, the range...

read more
Heat Pipe Design Guide

Heat Pipe Design Guide

  The focus of this heat pipe design guide is on sintered copper heat pipes (w/water) for electronics cooling applications. This typically translates to dissipated heat of between 20-200 watts (less if power density is high) and power density up to around 25...

read more
Heat Pipe Calculator Use Instructions

Heat Pipe Calculator Use Instructions

  Our online heat pipe calculator provides the following heat pipe performance data: heat pipe thermal conductivity by diameter, heat pipe carrying capacity (Qmax) by diameter & orientation, and delta-T from one end of the heat pipe to the other. From this...

read more
Heat Sink Calculator Use Instructions

Heat Sink Calculator Use Instructions

  How to use the online heat sink calculator to determine heat sink performance for a thermal solution using a solid metal base compared to a vapor chamber base. Input variables include fin height, fin thickness, heat source power, and heat sink dimensions. Since...

read more
Heat Sink Size Calculator Use Instructions

Heat Sink Size Calculator Use Instructions

  How to use the online heat sink size calculator used in the early stages of heat sink design. With the exception of choosing the correct "volumetric thermal resistance”, this is probably our most straight forward calculator. Here's the link to the calculator....

read more
Heat Pipes & Vapor Chambers – What’s the Difference?

Heat Pipes & Vapor Chambers – What’s the Difference?

  At some point in a thermal system design project it may become apparent that the tried and true methods of increasing thermal efficiency - solid base, fin & fan - just aren’t sufficient. Reasons include: Keep out zones prohibit a larger heat sink (thicker...

read more

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