Recently, trimmable resistors have been in high demand due to their properties. Many manufacturers of electronic equipment see the benefits of using these components in theory; however, the results can be quite different in practice without knowledge of laser trimming technology. To fully realize the benefits of these devices, it is necessary to carefully set up and control the trimming process, which will also greatly influence the component’s achievable performance. This application note will explore trimmable resistors and the trimming process.