RA73 Al2N3 Thin Film Precision Resistors TE Connectivity's / Holsworthy RA73 Aluminium Nitride (Al2N3) Thin Film Precision Resistors are high stability chip resistors offering a very high power-to-size ratio (up to 1W in a 0805 size). The RA73 resistors offer a Temperature Coefficient of Resistance (TCR) as low as 25ppm/°C and resistance tolerances of 0.1%. Standard values are within the IEC 63 E96 and E24 value grids. The RA73 Aluminium Nitride Thin Film Precision Resistors feature accurate and uniform physical dimensions that facilitate automatic placement methods.