SMD030F-2 Circuit Protection

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PTC Resettable Fuses are electric fuses that reset and perform the essential function of protecting the connected loads. SMD030F-2 is a single-pole thermal-link miniature circuit breaker widely used for electronic or electrical equipment with small current rating within 400mA at 125V AC rating. It is mainly applied in the field of overheat protection, short circuit protection and current overload protection.

The working Principle of SMD030F-2 is simple and straightforward. It consists of a ceramic thermostat and a metal terminal, which can be protected by metal or plastic housing. It works by detecting the device temperature when it heats up to a point where it can no longer control the current, the thermostat will open the circuit and reduce the current, breaking the electrical connection, thus protecting the electronic device.

The SMD030F-2 series is especially suitable for equipment that needs circuit protection and overload protection in ac or dc circuits. The rated current can be changed from 80mA to 400mA with different temperatures during current overload status. Meanwhile, the overcurrent trip points are accurate and reliable. The device can also be manually reset after the power is turned off. The superior performance of SMD030F-2 PTC Resettable Fuses makes them widely used in LED display, medical appliances, telecom applications, test meters, audio-visual products, etc.

Unlike traditional fuses, once the SMD030F-2 PTC Resettable Fuse operates, it does not need to be replaced, but only manually reset once the power is off. This property is especially useful for applications that require frequent power cycles or equipment with hard-to-reach fuses. When replacing a fuse, the SMD030F-2 provides a much more cost-effective and time-saving alternative which greatly reduce maintenance costs.

Using a PTC (Positive Temperature Coefficient) material and a special metal element, the SMD030F-2 can provide rigorous protection to a wide range of equipment. It can detect different over-temperature levels and operate in a wide range of temperatures, from -40℃ to +125℃. The superior performance of SMD030F-2 makes it an ideal choice for applications that require efficient protection against over-current or over-temperature.

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