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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
TOSHIBA is not responsible for any incorrect or incomplete information. Information is subject to change at any time without notice.

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What does derating of Safe Operating Area (SOA) mean?

Derating of SOA is to calculate the SOA based on the ambient temperature (or case temperature) of semiconductor device in operation.
The SOA in the datasheet is specified at 25 [deg.C] (ambient temperature or case temperature).
When the ambient temperature (or case temperature) is higher than 25 [deg.C], the SOA becomes narrow.
SOA should be limited by allowable power dissipation (within the junction temperature at the absolute maximum rating) based on ambient temperature.

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