ElectronicsThe TC0650F6981T5E High Precision & Low TCR SMD Resistors 1206 RoHS manufactured by Uniroyal Electronics are surface-mount resistors with a size of 1206, meaning that they measure approximately 0.125 inches (3.2 millimeters) in length and 0.06 inches (1.6 millimeters) in width. This is the standard size for SMD resistors, also known as surface-mount technology or surface-mount devices. They are designed to have a tolerance of ±0.25%, and a temperature coefficient of resistance (TCR) of seven parts per million (ppm)/°C maximum. The resistors are RoHS (Restriction of Hazardous Substances) compliant, meaning they do not contain lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE. This allows them to be used in more environmentally-friendly applications.