# What is the operating temperature range of transistors, diodes, etc.?

Latest Updated:08/01/2005

## Question:

What is the operating temperature range of transistors, diodes, etc.?

## Answer:

Among semiconductor products, integrated circuit products are useless if their circuits do not function, and therefore the (circuit) operating temperature range is specified.
Discrete devices such as transistors and diodes do not by themselves have circuit functions, and therefore no operating temperature range is specified for them.
Use such products within the storage temperate range.

The lower limit of the usage temperature range is the storage temperature range, but the upper limit is restricted by the junction temperature.
For example, if the absolute maximum rating for the junction temperature is 150 °C, such as in a transistor, perform derating so that the junction temperature does not exceed 150 °C.

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