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What is the formula for the junction to case thermal resistance (θJC)?

April 26, 2017Case Formula resistance Thermal

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What is the formula for the junction to case thermal resistance (θJC)?

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θJC is defined by the following formula: θJC = (TJ – TC) / PD Where TJ is the junction temperature of the semiconductor device mounted inside the oscillator (measured in °C), TC is the external case or package temperature of the oscillator (measured in °C), and PD is the power dissipation of the oscillator (measured in Watts). Given the above equation, the θJC parameter is measured in units of degrees Celsius per Watt (°C/W).