Precision and Power Resistors
Resistors are often designated as precision or power. Precision resistors are designed for applications where tight resistance tolerance and stability are primary considerations, and they generally have restricted operating temperature limits and power dissipation ratings. Power resistors can also have tight tolerance and be quite stable, but their design emphasis is to optimize power dissipation – these resistors generally have extended operating temperature limits. A very wide variety of resistor technologies are available in both the precision and power categories and the success of your design may rest on your choice.