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thermal load meaning, thermal load definition | English Cobuild dictionary. thermal. 1 adj Thermal means relating to or caused by heat or by changes in temperature. ...thermal power stations. 2 adj Thermal streams or baths contain water which is naturally hot or warm. Volcanic activity has created thermal springs and boiling mud pools.
Thermal impedance is defined as a quotient of the time function of a temperature difference divided by the impressed power dissipation. In the datasheets this value is given as a function of time in the form of a diagram. The static upper range value is the actual thermal resistance. This is indicated in the datasheets in the form of a characteristic. Depending on the choice of temperature detection points, distinctions are made. For example: 1  Z th(j-c) / R th(j-c) : junction-case.