The SM/1xx Series from Bourns are Precision Axial Wirewound Resistors. They have a resistance ranging from 1 ohm to 5 mega-ohms and a resistance tolerance of ±0.005 % to ±1 %. These resistors have a power rating of up to 2 W. They have a temperature coefficient of ±2 PPM/°C and can operate over a temperature range of -55°C to +245°C. These RoHS-compliant non-inductive multi-Pi core resistors offer long-term stability of 100 ppm/year and have matched resistance sets to ±0.001 % and ±0.5 ppm/°C. They are available in surface-mount packages.