A resistor is a passive component that reduces voltage or limits the current flowing through a circuit. This component can also absorb energy and dissipate this energy in the form of heat. Its resistance to the flow of electrons is determined by the conductive materials with which it is built. The materials used in the composition of a resistor perform a critical role in enabling performance reliability and stability, particularly for high-voltage, high-power, high stability/accuracy, or high-current applications. Our resistors portfolio contains two types of resistors: fixed resistors (including surface mount, through-hole, and chassis mount), which offer one resistance value and are used in almost all applications; and variable resistors (including potentiometers and trimmer potentiometers), which offer broad resistance values and are predominantly used to control either current or voltage by changing the resistance value. Choosing the right resistor is crucial for designing a circuit with the power, accuracy, current, or voltage needed to efficiently power any device.
What's the difference between a pre-charge resistor and an in-rush resistor? What about a braking resistor or a crowbar resistor? Which types of resistors offer short-term overload capability and which offer continuous power dissipation? Learn all this and more, in this glossary explaining the technology of our power resistors.
Thin Film SMD Resistors: Advantages for Your Design
Today’s thin film resistors offer more variations and finer tolerances, enabling designers to achieve more accuracy in resistance value with fewer components. These can also help you save space on printed circuit boards while reducing device weight. Understanding thin film technology is the first step to choosing the right resistor.
Choosing Power Resistors
Power resistors protect technology by converting large amounts of energy into heat that can be dissipated. Designing your devices for long-term reliability requires power resistors that can withstand performance requirements. Learn how you can select the right power resistor for your design.