.The 0603WAF191KT5E is a 0603 chip resistor manufactured by Uniroyal, with a power rating of 100mW, ±1% tolerance, and resistance value of 1.91O. This resistor is RoHS compliant, and designed to be used for surface mount applications. Its size, 0603, is a standard metric unit of size in the electronics industry. It is also an insulated, non-inductive ceramic type resistor. This resistor is suitable for high temperature, high frequency applications, where small size and low cost are critical.