THERMAL ENGINEERING
THERMAL MANAGEMENT OF ELECTRONICS, HEAT EXCHANGERS GUIDES, FREE SOFTWARE AND
CALCULATORS,
AND OTHER ONLINE INFORMATION RESOURCES
temperature
is a measure of the average molecular kinetic energy in the matter. The normal flow of kinetic energy is from a higher temperature region (or an object) toward a lower temperature region (or an object). This kinetic energy flow is referred to asheat transfer
. There are three types of heat transfer: conduction, convection, and radiation.Electric currents or alternating electromagnetic fields cause power dissipation in all electronic components, which results in increase of their temperature. The reliability and life expectancy of any component is related to its operating temperature. Failure rate and its inverse, mean time between failures (MTBF), are measures of the electronic system reliability. Typically, according to Arrhenius model, each 10°C rise in temperature increases the failure rate by 50%. At certain temperature any electronic component can be irreversibly destroyed (a typical maximum operating temperatures for semiconductors is 125-175 C at the junction, capacitors 85-125 C, insulated magnet wires- 105-200 C). The task of thermal management is to control the operating temperature of the product through design. The thermal management and analysis are therefore essential parts of electronics design.
| Home |
| Tutorial |
| Topologies |
| SMPS design |
| Software |
| PCB design |
| Computer PSU |
| UPS |
| Circuit |
| Magnetics |
| Formulas |
| EE reference |
| Inverters |
| Thermal design |
| Generators |
| Solar power |
HEAT AND THERMODYNAMICS BASICS
THERMAL MODELING AND ANALYSIS SOFTWARE
THERMAL DESIGN GUIDES, ANALYSIS & APPLICATION NOTES
Heat conduction formulas
Heat Radiation
A heat transfer textbook (conduction, convection, radiation)
The First Law of Thermodynamics
Energy and power units conversion
ThermoAnalytics demo software
Thermal conductivity units
Temperature units conversion
Flow velocity calculator
Thermal resistance and fin efficiency online calculators
THERMAL DATA OF ELECTRONIC COMPONENTS
How to determine thermal resistance for a power semiconductor heat sink
Materials thermal conductivity
Heatsink extrusion temperature and length correction
Fan speed controllers designs
What you need to know about cooling fans
HEATSINK PROPERTIES AND DESIGN NOTES
Analytical Model for simulating electronic systems' thermal behavior
Heatsink design guide
CUSTOM POWER ELECTRONICS SEARCH ENGINE