When measuring milliohm resistors like 0.33ohms you need to use a milliohm meter. Also milliohm resistors drift very easy with temperature. How do you measure milliohm resistors besides using a milliohm meter? I put my milliohm meter across the 0.33ohm resistor and use a hairdryer or cooling spray and watch if the resistor drifts up or down. If I replace the 0.33 ohm resistor with a higher wattage the temperature drifts less. But I don't know which temperature coefficient to use at a lower watter when I resistors with a 6th band. I heard that military resistors milliohm resistors don't drift at all why is that?
Resistance Temperature Coefficient
Resistors values can change with temperature. The 6th band represents the temperature coefficient or tempco and is represents the amount the resistance value will change with temperature. It is in units of ppm/degree C. The band colors represents the following:
brown – 100 ppm/ºC
red – 50 ppm/ºC
orange – 15 ppm/ºC
yellow – 25 ppm/ºC
blue – 10 ppm/ºC
violet – 5 ppm/ºC
Is brown band better or is violet band better for temperature changes?
I never understood this temperature chart because carbon comp resistors change differently , metal film , carbon film
So i don't know which type to use for milliohm resistors, which type to use so they don't drift in temperature or in voltage?
The wattage rating in milliohm resistors makes it stable for voltage coefficent?
Resistance Temperature Coefficient
Resistors values can change with temperature. The 6th band represents the temperature coefficient or tempco and is represents the amount the resistance value will change with temperature. It is in units of ppm/degree C. The band colors represents the following:
brown – 100 ppm/ºC
red – 50 ppm/ºC
orange – 15 ppm/ºC
yellow – 25 ppm/ºC
blue – 10 ppm/ºC
violet – 5 ppm/ºC
Is brown band better or is violet band better for temperature changes?
I never understood this temperature chart because carbon comp resistors change differently , metal film , carbon film
So i don't know which type to use for milliohm resistors, which type to use so they don't drift in temperature or in voltage?
The wattage rating in milliohm resistors makes it stable for voltage coefficent?