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    The market for light-emitting diode (LED) lighting devices is expanding rapidly primarily because of the product’s improved performance and significantly lower prices. Despite such features, LED lighting devices still lack the track record compared with incandescent and fluorescent lamps because of safety issues involving their use. Specifically, amid their excellent features, such as high-efficient lighting and low power consumption, the highbrightness LED device itself can become extremely hot.


    This article introduces a simple method to implement overheat protection of LED lighting devices using the POSISTOR, a positive temperature coefficient (PTC) ceramic thermistor manufactured by Murata Manufacturing Co., Ltd. This method can improve the safety of LED lighting devices at low cost.


    To view the Farnell range or Murata Posistor's click here.
    To view the Farnell range of PTC thermistors click here.