The 5-1879128-3 is a Type RN73 series thin-film precision resistor designed for high-stability applications requiring exceptional accuracy and temperature stability. It features a temperature coefficient of resistance (TCR) as low as 5ppm/°C with tolerance down to 0.01%, utilizing a three-layer sputtered nichrome construction on an alumina substrate with silver electrodes and nickel barrier layers. The resistor is available in multiple case sizes (0402 to 2512) with electroplated 100% matte tin terminal finish and MSL1 moisture sensitivity level rating. Key technical specifications include dimensions ranging from 1.00 mm × 0.50 mm × 0.30 mm (0402) to 6.30 mm × 3.10 mm × 0.55 mm (2512), with resistance values conforming to E96 and E24 grids. This component is ideal for communications, industrial controls, instrumentation, and medical applications where precision, stability, and reliability are critical requirements.