The TC0550D3921T5J is a high-precision, low TCR SMD resistor, measuring 0805 (2.125 mm x 2.35 mm) in size, manufactured by Uniroyal - a leading manufacturer in this market. The resistor is composed of two terminal parts and is made of a high-grade alloy, which gives it outstanding performance and superior stability. It features tight tolerances, low temperature coefficient of resistance (TCR) changes of less than ±50 ppm/°C, and high insulation resistance. The resistor is suitable for use in sensitive circuits such as personal computers, and can also be used in medical equipment and other precision circuits. The resistor is RoHS compliant and comes with a variety of standard and specialized coating packages, allowing it to be used in various high temperature applications.