Temperature Coefficient of Resistance Formula |
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| R=Rref⋅[1+α⋅(T−Tref)] | ||
| Symbol | English | Metric |
| R = resistance at temperature T | Ω | kg−m2/s3−A2 |
| Rref = resistance at temperature Tref | Ω | kg−m2/s3−A2 |
| α (Greek symbol alpha) = temperature coefficient of resistance of the material | F | C |
| T = material temperature in celcius | F | C |
| Tref = reference temperature for which the temperature coefficient is specified | F | C |
Temperature coefficient of resistance, abbreviated as R or TCR, is a measure of how much a material's electrical resistance changes with temperature. It quantifies the relative change in resistance per degree of temperature change.
Temperature Coefficient of Resistance Material |
|
| Material / Substance | Temperature coefficient of resistance / °C (at 20 °C) |
| Aluminum | 0.00429 |
| Brass | 0.0015 |
| Carbon | -0.0005 |
| Constantan | 0.00003 |
| Copper | 0.00386 |
| Germanium | -0.05 |
| Gold | 0.0034 |
| Iron | 0.00651 |
| Manganese | 0.00001 |
| Manganin | 0.000002 |
| Mercury | 0.0009 |
| Nichrome | 0.0004 |
| Nickel | 0.00641 |
| Platinum | 0.003927 |
| Silicon | -0.07 |
| Silver | 0.0038 |
| Tantalum | 0.0033 |
| Tin | 0.0042 |
| Tungsten | 0.0045 |
| Zinc | 0.0037 |