Thermal Properties of an Inductor

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SUMMARY

The thermal properties of inductors, particularly ferrite-based inductors, exhibit significant changes in low temperature environments, specifically between -100 and -70 degrees Celsius. The primary property affected is the magnetizing inductance, which decreases as temperatures drop. Datasheets from manufacturers provide inductance versus temperature graphs, although they typically do not extend below -20 degrees Celsius. Understanding these changes is crucial for applications operating in extreme conditions.

PREREQUISITES
  • Understanding of inductor functionality and design
  • Familiarity with ferrite materials and their magnetic properties
  • Knowledge of temperature effects on electronic components
  • Ability to interpret datasheets and inductance graphs
NEXT STEPS
  • Research the effects of low temperatures on ferrite materials
  • Examine datasheets from various inductor manufacturers for inductance versus temperature data
  • Learn about alternative materials for inductors in extreme environments
  • Investigate thermal management techniques for electronic components in low-temperature applications
USEFUL FOR

Electrical engineers, circuit designers, and anyone involved in the design and application of inductors in low-temperature environments will benefit from this discussion.

JeffMandell
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What properties of an inductor change in a low temperature environment. Specifically in the -100 through -70 degrees Celsius range?
 
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JeffMandell said:
What properties of an inductor change in a low temperature environment. Specifically in the -100 through -70 degrees Celsius range?

For ferrite-based inductors, mainly the magnetizing inductance drops at low temperatures. You can look at datasheets for various magnetic materials at the manufacturer's websites -- the inductance versus temperature graph will show you what you are asking about. However, the low temperature end of the graph will often not go below -20C or so...
 

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