The RM10FTN4421 is an electronic part manufactured by TA-I Tech, a Taiwan-based technology company specializing in resistors, capacitors, and semiconductors. This specific part is a Chip Resistor - Surface Mount, with a resistance of 4.42K Ohms, a tolerance of ±1%, a power rating of 1/8 Watt, and an overall size of 0805 (that is, 0.08 inch by 0.05 inch). This resistor is also compliant with the Restriction of Hazardous Substances (RoHS) directive, which limits the use of certain hazardous materials in the manufacture of electrical and electronic equipment.