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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.
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What is a radiation equivalent circuit?

A radiation equivalent circuit (Figure 1) is a thermal circuit described by an electrical circuit.
By replacing the heat flow by current, the heat path conducted to the outside can be represented by an electric circuit.
Figure 2 shows the thermal resistance from device junction to ambient.

For radiation equivalent circuit, please refer to “Thermal Design and Attachment of a Thermal Fin: Power MOSFET Application Notes”

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