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How is the operating temperature (Ta) of a device defined?

Latest Updated:03/18/2009

Question:

How is the operating temperature (Ta) of a device defined ?

Answer:

The operating temperature is the value of the air temperature measured in free space at a position far enough from the component to avoid the influence of heat dissipation. The operating temperature as defined is measured at 1 inch (2.5 cm) from the bottom of package.
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