Referenzwiderstände

Referenzwiderstände, also known as standard resistors or precision resistors, are resistors with exceptionally tight tolerances and stability. Their primary purpose is to provide a highly accurate and stable reference value in electronic circuits. This accuracy is crucial for applications where precise measurements or controlled current/voltage levels are required.

The performance of a reference resistor is characterized by several key parameters. Tolerance refers to the maximum allowable deviation from the nominal resistance value, typically expressed as a percentage. Stability describes how well the resistance value remains constant over time and under varying environmental conditions, such as temperature and humidity. Temperature coefficient of resistance (TCR) quantifies the change in resistance per degree Celsius of temperature change, with lower TCR values indicating better temperature stability.

Referenzwiderstände are manufactured using specialized materials and techniques to achieve their high precision. Common materials include metal film, wirewound, and specialized alloys. The manufacturing process involves careful calibration and testing to ensure adherence to strict specifications.

These resistors find widespread use in a variety of applications, including precision voltage dividers, current sensing circuits, calibration standards, data acquisition systems, and in the manufacturing of other electronic components. Their reliability and accuracy make them indispensable for ensuring the performance and integrity of sensitive electronic designs.