1.Sensing accuracy +/-3 deg. C which is highest of PTC Thermistor and the same level as NTC at sensing point. 2.Same resistance-temperature characteristics as PRF18_QB5RB s eries . Easy to use higher accurate sensing type. 3.SMD type is helpful for miniaturizing circuits because of its small size and light weight. 4.Excellent thermal response due to small size 5.Solid-state construction provides excellent mechanical vibration and impact resistance. 6.Contactless operation provides noiseless opera.