Y505050R0000K0L
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33355706-Y505050R0000K0L
Resistor Trimmer, Metal Foil, 50 Ohm, ± 10%, 500 mW, 25 Turn, Multi Turn, Panel Mount
The resistance-change factor per degree Celsius of temperature change is called the temperature coefficient of resistance. This factor is represented by the Greek lower-case letter “alpha” (α). A positive coefficient for a material means that its resistance increases with an increase in temperature.
Tolerance is the percentage of error in the resistor's resistance, or how much more or less you can expect a resistor's actual measured resistance to be from its stated resistance. A gold tolerance band is 5% tolerance, silver is 10%, and no band at all would mean a 20% tolerance.