MF-R185

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PTC (Positive Temperature Coefficient) resettable fuses, with MF-R185 as the representative, have a wide range of applications and are mainly used to protect electric circuits from damage caused by current overload or other abnormal conditions. The MF-R185 is designed in accordance with the IEC Standards 60269, and is typically suitable for applications in diverse electrical and electronic devices.

The MF-R185 resettable fuse functions by incorporating a polymer PTC element within a solid metal cylindrical body. This element is designed to open an electric circuit in the event of an excessive current overload or short circuit. When the current exceeds the resettable fuse’s rated current, it acts as an open switch and disconnects the circuit. Once the cause of the current overload or short circuit is eliminated and the current returns to a safe level, the PTC element gradually cools down, leading to its reset and restoring the circuit to its original state.

The MF-R185 resettable fuse is applied on mobile phones, home appliances, laptops, automobiles and other electric or electronic appliances. The advantage of the MF-R185 is its unique self-resetting feature that eliminates the need for manual resetting. Furthermore, it has a temperature coefficient of positive temperature coefficient (PTC) that enables better protection from short circuit and current overload, and a maximum temperature rise of 35℃ which makes it highly reliable and increases its lifespan. In addition, it has excellent electrical characteristics and an impressive power rating of 185mA.

The MF-R185 resettable fuse can operate efficiently within a wide temperature range, from -55 ⁰C to 125 ⁰C. These temperature ratings ensure reliable performance throughout the operation life of the device. Its accuracy is also excellent with a maximum incident energy withstand of 8KA. The MF-R185 is also highly immune to dV/dt induced transient overvoltages, for example surge spikes induced by the rapid opening of contacts or relays. Moreover, the MF-R185 has an excellent environmental resistance that enhances its long-term stability and useful life even when exposed to damp or dusty environments.

To summarise, the MF-R185 is a superior resettable fuse characterised by its PTC element, wide temperature range and high precision ratings. It is well suited for power supply devices such as mobile phones, home appliances, laptops, automobiles and other electric or electronic appliances. The MF-R185 provides reliable and effective circuit protection from current overload, power surges and short circuit events, while its self-resetting feature helps to reduce maintenance and repair time.

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