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Pcb thermal considerations

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Thermal Management Considerations for PCBs Measurement techniques and heat conduction Dr Graham Berry
Apple Apps for Thermal Engineers Gear1-Convection is comprised of three natural convection and three forced convection calculators. It is a visual application designed for touch-based interaction. This provides an instant sensitivity analysis to determine which parameters are the most important. Gear2-Materials is an encyclopedia in your pocket for Thermo-Physical properties of over 1,300 materials. These properties include: Density, Specific Heat, and Thermal Conductivity. Gear3-Finishes is an encyclopedia in your pocket for Thermo-Physical surface properties of hundreds of materials. If you need properties for Asphalt Shingles, Second Surface Silvered Teflon. or even a Deciduous Forest, you can find it here!
Thermal Resistance ,[object Object],[object Object],[object Object]
Thermal resistance calculation ,[object Object],[object Object],[object Object],[object Object]
TSP Calibration ,[object Object],[object Object],[object Object]
Temperature coefficient ,[object Object],[object Object]
Calibration graph ,[object Object]
Thermal resistance measurement ,[object Object],[object Object],[object Object],[object Object]
Thermal resistance measurements ,[object Object],[object Object]
Thermal resistance measurements ,[object Object],[object Object]
Thermal resistance measurements ,[object Object]
Test ambient ,[object Object],[object Object],[object Object],[object Object],[object Object]
Air flow tests ,[object Object],[object Object],[object Object],[object Object]
Test setups Test device on board Air flow test setups
 JC Tests ,[object Object],[object Object],[object Object]
 JC Tests ,[object Object],[object Object],[object Object]
PLCC  JC test setup
 JC data ,[object Object],[object Object]
Other factors affecting  JC ,[object Object],[object Object],[object Object],[object Object]
 JA data ,[object Object],[object Object]
Heatsinks ,[object Object],[object Object],[object Object],[object Object]
Interface roughness ,[object Object],[object Object]
Surface roughness
Surface roughness ,[object Object],[object Object],[object Object],[object Object]
Interstitial filler materials
Solid interfaces ,[object Object]
Effect of contact pressure
Heat Conduction in a PCB ,[object Object]
Heat conduction in PCB ,[object Object],[object Object],[object Object]
Conductivity Equations where t is thickness of given layer and  is thermal conductivity of that layer
Sample results ,[object Object],[object Object],[object Object],[object Object]
Sample results
Conclusions from results ,[object Object],[object Object],[object Object]
Refining calculations ,[object Object],[object Object],[object Object]
Summary ,[object Object],[object Object],[object Object],[object Object],[object Object]
Summary ,[object Object],[object Object],[object Object]
Thermal Analysis Software ,[object Object],[object Object],[object Object],http://www.pcanalyze.com/product.htm

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Pcb thermal considerations

  • 1. Thermal Management Considerations for PCBs Measurement techniques and heat conduction Dr Graham Berry
  • 2. Apple Apps for Thermal Engineers Gear1-Convection is comprised of three natural convection and three forced convection calculators. It is a visual application designed for touch-based interaction. This provides an instant sensitivity analysis to determine which parameters are the most important. Gear2-Materials is an encyclopedia in your pocket for Thermo-Physical properties of over 1,300 materials. These properties include: Density, Specific Heat, and Thermal Conductivity. Gear3-Finishes is an encyclopedia in your pocket for Thermo-Physical surface properties of hundreds of materials. If you need properties for Asphalt Shingles, Second Surface Silvered Teflon. or even a Deciduous Forest, you can find it here!
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  • 14. Test setups Test device on board Air flow test setups
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  • 30. Conductivity Equations where t is thickness of given layer and  is thermal conductivity of that layer
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