This 25121WF220LT4E chip resistor is a surface-mount, RoHS compliant device manufactured by Uniroyal. It is a thin-film resistor with a resistance value of 22K ohms, and it features a size of 1206 with a tolerance of ± 4%. The device also features a power rating of 1/2 watt, voltage of 100V, and tolerances of 1%. Additionally, it operates in a temperature range of -55°C to 185°C. The device also has solder terminals for attachment, and it is protected against thermal derating, voltage derating, and lead-free processing.