The PTFM04BD471Q2N34BS with PTC (Positive Temperature Coefficient) Thermistors is a 16 volt, 0.1 amp, 470 ohm temperature sensing device manufactured by Murata. It has a temperature coefficient of 0.3 and a maximum continuous current rating of 0.5 amps. The PTFM04BD471Q2N34BS PTC thermistor is comprised of a ceramic disc containing a special composition of metal oxides which change resistance with temperature. When the temperature rises, the resistance changes in a positive temperature coefficient (PTC) manner, meaning resistance increases with temperature. This feature makes it suitable for use in a variety of applications requiring temperature protection, such as power supplies, heating elements, motors, and most other devices. The PTFM04BD471Q2N34BS is RoHS compliant and lead free.