• Estimate lower-tier temperature rise in a stacked 3D IC from upper-tier power, thermal coupling, and thermal resistance.
• Compare fabrication or device scenarios while holding coefficients and unit conventions constant.
• Check a hand calculation before moving to a higher-fidelity process, circuit, or TCAD model.

The result is only the temperature rise attributable to coupled upper-tier power; it does not include the lower tier's own dissipation.

• A single coupling factor cannot represent spatial hot spots, transient heating, interface resistance, or temperature-dependent material properties.
• Use parameters measured for the same material, geometry, temperature, and operating regime whenever the result informs engineering work.

• Package Thermal Resistance

  Use Package Thermal Resistance to derive the junction-to-ambient thermal resistance from the steady-state temperature rise over dissipated power. Choose this tool when you need to estimate lower-tier temperature rise in a stacked 3D IC from upper-tier power, thermal coupling, and thermal resistance.

• Self Heating Rise

  Use Self Heating Rise to compute on-die self-heating temperature rise from dissipated power and thermal resistance. Choose this tool when you need to estimate lower-tier temperature rise in a stacked 3D IC from upper-tier power, thermal coupling, and thermal resistance.