Vishay Intertechnology Inc. introduced a new series of radial-leaded, positive temperature coefficient (PTC) thermistors. Devices in the new TFPTL <http://www.vishay.com/doc?33027> series feature nickel thin film elements with positive temperature coefficients of + 4110 ppm/K, fast response time of < 2 s, and high stability over a wide temperature range from - 55 to + 150 °C.