Temperature Coefficient of Resistance

The temperature Coefficient of Resistance is a ratio of the rate of change of Zero-Power Resistance with temperature to the Zero-Power Resistance at a specified temperature. This is commonly expressed in %/°C and is characterized by:

Where:
α is Temperature Coefficient of Resistance [%/C°]
T is Absolute Temperature [K] at Any Point
R is Zero-Power Resistance [W] at T
β is Beta Constant [K]

Since α is inversely proportional to the square of the temperature, it becomes very large at low temperatures. The Temperature Coefficient of Resistance is useful for observing the temperature slope at a selected temperature point. Together, α and β determine a temperature slope index at Zero-Power Resistance with α determining the sharpness of the temperature slope.

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	Temperature Coefficient of Resistance The temperature Coefficient of Resistance is a ratio of the rate of change of Zero-Power Resistance with temperature to the Zero-Power Resistance at a specified temperature. This is commonly expressed in %/°C and is characterized by: Where: α is Temperature Coefficient of Resistance [%/C°] T is Absolute Temperature [K] at Any Point R is Zero-Power Resistance [W] at T β is Beta Constant [K] Since α is inversely proportional to the square of the temperature, it becomes very large at low temperatures. The Temperature Coefficient of Resistance is useful for observing the temperature slope at a selected temperature point. Together, α and β determine a temperature slope index at Zero-Power Resistance with α determining the sharpness of the temperature slope.