250R180TMR

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PTC Resettable Fuses, also known as polyfuses, are devices used to protect electronic circuits from damage due to short circuits. They are generally made of polymeric materials that undergo phase transition when a temperature threshold is exceeded, and can be reset after the fault is cleared. 250R180TMR is one type of polyfuse with wide application fields and working principle.
250R180TMR is a type of resettable poly fuse, with wide temperature range of -40 to +125°C, which makes it suitable for various electronic applications. The rated current and rated voltage of 250R180TMR is 250mA and 180V, respectively. It is a two-pin part, with black and blue colors as its pins.The working principle of 250R180TMR is based on the phenomenon of thermal runaway. When the device encounters an over-current situation, the resistivity of the element will increase due to its positive temperature coefficient. This will generate some heat and result in further increase of its resistivity and temperature until thermal runaway is experienced, and the device is tripped off. After the fault is cleared and the temperature decreases, the element will recover its original resistivity and tripped state is cleared.
250R180TMR is commonly used for protection of power circuits and other electronic components, such as protection of digital camera, telephone, charger, etc. By preventing damage from over-current, it can significantly reduce the cost of maintenance and replacement of those electrical and electronic components. Moreover, with its low resistance and wide operating temperature range, 250R180TMR can provide reliable and durable safety performance.
In conclusion, 250R180TMR is an effective and reliable protection device for many electronic applications. It can easily and quickly be reset after any over-current, and provide excellent protection against abnormal current flow. With its wide operating temperature range and low resistance, 250R180TMR is a great choice for many application fields.

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