{460} What is Resistor's TCR, PPM/C or PPM/K Temperature Coefficient of Resistance

in this video i discussed What is TCR PPM/C or PPM/K Temperature Coefficient of Resistance is a change in resistance. how to calculate tcr from ppm/c or ppm/c. Temperature Coefficient of Resistance (TCR) tells us that how much resistor value will changes as its temperature changes. It is usually expressed in ppm/°C (parts per million per degree Centigrade) units. what is ppm/°C or ppm/K
1ppm= 1/1000,000
for example 56000 ohm precision resistor has a TCR of 5ppm/°C. That means its resistance unit item (each ohm) will not change more than 0.000005 per ohm per degree Centigrade temperature change.
for example we have 56000 ohm with 2 percent tolerance and ppm/°C
let us calculate the TCR, if the temperature increases 1 degree centigrade
ppm/°C x total temperature change x total resistance value
0.000005 x 1 x 56000 = 0.28 Ohm
by rising just 1 degree temperature, the resistance may deviate 56000 + 0.28 Ohm
the value if Temo coefficient of resistance in datasheet is the maximum allowed limit. but the actual change may be much smaller, depending on the specific characteristics of that resistor.
in this video you will know
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what is TCR
what is temperature coefficient of resistance
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how to calculate tolerance of resistance

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