Vishay thin film PNM’s are a discrete precision resistor that is available 12 case sizes. They cover a resistance range of 10 ohms to 3 Megohm with tolerances to 0.1% and a temperature coefficient of resistance of 25 ppm/degree C . These devices eliminate materials that would disturb magnetic fields applications such as in MRI magnetic resonance imaging machines. The PNM series chip resistor has been carefully engineered with non magnetic materials to eliminate the effects of stray magnetic fields on circuit performance. The construction provides a non magnetic barrier layer for improved solderability and a moisture resistant tantalum nitride resistor film on a high purity alumina substrate.