RN73C1E2K55B 2.55kΩ 0402 (1005M) Thin Film SMD Resistor ±0.1%. The RN73 series of high precision resistors from Tyco Electronics offers different power dissipations according to chip size, TCR’s down to 5ppm/°C and resistance tolerances to 0.01%. It consists of three sputtered layers based on nichrome thin-film technology giving stable high-frequency performance and with accurate and uniform physical dimensions it facilitates automatic placement.