Bourns® FW Series is available with resistance values of 4.7 – 100 ohms for each available power rating of 1 W, 2 W, 3 W, 5 W, and 7 W. The tolerance is standard at 5 % over or under the stated resistance. The temperature coefficient of resistance is 200 ppm per degree Celsius for all models in the series. Each of these parameters is included in the part numbering system for Bourns® FW Series.