RNCF/RNCS Precision Thin Film Resistors Stackpole Electronics RNCF/RNCS Precision Thin Film Resistors are AEC-Q200 qualified and have an operating temperature range of -55°C to +155°C. RNCF resistors offer a wide R-value range, TCR rating down to ±2ppm/°C, and precision tolerances to ±0.01%. The RNCS resistors feature a special manufacturing process that ensures high power, high precision, ultra-stable performance, and long life in the harshest environments. Additionally, the RNCS series from Stackpole Electronics offers special passivation for moisture-sensitive applications.