Since its formation in the late 1960s, flashlight has become essential hand-held lighting tools in every household. In daily life, people often need to use flashlight in emergency situations, such as car maintenance, outdoor lighting, power failure, etc. With the continuous progress of science and technology, flashlight is also moving towards the direction of portable, small, rechargeable, multi-functional, resulting in a hot-selling portable flashlight on the market. In order to avoid the portable flashlight in the working process due to high temperature and lead to motherboard burning, manufacturers will install a NTC thermistor as a temperature monitoring and temperature controlling components.

The portable flashlight includes a housing, a lens, a light emitting diode, a battery and a printed circuit board (PCB). Among them, the miniature insulated lead NTC thermistor is installed on the printed circuit board to protect the circuit and play the role of temperature monitoring and temperature controlling.



With the increasing requirements of people for the convenience of life, portable flashlight has been widely used in daily emergency, car maintenance, camping, outdoor construction, equipment maintenance, warehouse room and other situations that need to work or activities under the condition of insufficient light. Multi-function also becomes one of the selling points that portable flashlight is sold on market at present. Besides common lamplight adjustment function, portable flashlight still has the function of SOS emergency call for help, waterproof, portable charger and so on.

Miniature insulated lead NTC thermistor produced by EXSENSE Electronics Technology Co., Ltd., which has the advantages of high sensitivity, high precision, small epoxy sealing head and great stability. It plays the role of temperature monitoring and temperature controlling in portable flashlight.