The RS-1-20K-1%-R part from Stackpole is a single surface-mount resistor. This resistor has a resistance of 20,000 ohms (20K), a tolerance of 1%, and is made with a flame-resistant epoxy coating (R). It is considered to be a high-precision resistor, and it is very small in size, making it suitable for placement on circuit boards with limited real estate. The RS-1-20K-1%-R is designed to resist voltage and heat, and it is commonly used in electronic applications such as automotive and communication systems.