If your question is related to precision resistors, they are basically designed for zero temperature coefficient. They show a residual temperature coefficient, that must be expected as the sum of a systematic term (possibly a quadratic or cubic function of temperature) and individual variations. Although there may be a systematic dependency on resistance value, you should not assume any TK matching of individual resistors unless specified by the manufacturer.
In the model lib i have the temperature coefficient...my doubt is "will the temperature coefficient vary for different resistor value, for the same type of resistor ?"
bharatsmile2007,
Temperature Coefficient (Tempco) is usually given on the manufacturers data sheet in units of parts per million per degree C, e.g. 2 ppm/degC. The guaranteed maximum tempco value for a given resistor family does not vary with the resistance value, unless specifically specified on the data sheet.
Regards,
Kral