Resources | Temperature Coefficient of Resistance
Temperature Coefficient of Resistance (TCR)
TCR is a measure of the stability of the resistance value with respect to changes in temperature. Standard TCR values for our thick film resistors are ± 100, 200, and 300 ppm/°C. Standard thin film TCR values are ±25, 50, and 100 ppm/°C.
Resistors of similar value from the same manufacturing lot show little variation in TCR behavior from chip to chip. TCR values within a typical thick film lot vary less than 50 ppm, while TCR values within a typical thin film manufacturing lot vary less than 30 ppm. Tracking less than 15 ppm can be achieved in a thin film lot when required. Resistors from different manufacturing lots can have a much wider variation in TCR. If close tracking is required, please specify when ordering so that we can supply you with selected resistors from a single manufacturing lot.