RUSBF075-2 Circuit Protection

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PTC Resettable Fuses (referred to as PTC Fuses) are designed to protect any electrical circuit from current overload or over-voltage conditions. The PTC fuse works by increasing electrical resistance when a predetermined current level is passed through the fuse, thus limiting current and protecting the circuit or device. The RUSBF075-2 is a Polymer PTC Resettable Fuse, and has a typical resistance of 0.2 Ohm and a hold current of 0.75A.

The RUSBF075-2 PTC Resettable Fuse is widely applicable in various application fields such as consumer electronics, consumer appliances, automotive electronics, cellphones, chargers, cordless tools, power supplies, audio and video equipment, healthcare and safety equipment, and communication systems. The devices are designed for high volume production applications that require safety and reliability.

Working Principle of RUSBF075-2

The RUSBF075-2 Resettable Fuse is a PTC device with a Polymer PTC resistor element that is suitable for overcurrent protection applications. It is designed to limit current when an overcurrent situation occurs. The polymer used for the PTC fuse provides a temperature-stable performance even when subjected to extreme current levels. The device must be reset manually after it has tripped (disconnected the over-loaded circuit).

The RUSBF075-2 PTC Resettable Fuse has a reliable and reversible reset mode of operation, a low maximum operating voltage and a low resistance when cold. It also has a low leakage current, making it suitable for a variety of applications. The fuse has a wide operating temperature range of -40 to +135°C, and has an operating time of less than 10ms.

The fuse also has a self-clearing function that allows it to clear itself after an overload condition. When the over-current condition is removed, the device will conduct again, thus resetting itself. This self-clearing function allows the device to be used in applications where the current flow exceeds the rated current value.

Applications of RUSBF075-2

The RUSBF075-2 PTC Resettable Fuse provides a reliable and cost-effective solution for overcurrent protection applications. It is widely used in consumer electronics, consumer appliances, consumer motor applications, power supplies, LED lighting systems, mobile phone chargers, audio and video equipment, communication systems, healthcare and safety equipment, and more. The device has a wide operating temperature range and a low resistance when cold, making it ideal for a variety of applications.

The RUSBF075-2 PTC Resettable Fuse can also be used as an emergency shut off device for consumer motor control applications such as washing machines, dryers, dishwashers, and other household appliances. The device also provides overcurrent protection to automobile and off-grid solar-powered equipment.

The PTC fuse is also effective in high-power applications, especially in the automotive industry. The device provides a safe solution for controlling and monitoring current flow from the battery, starter motor, alternator, and ECU. The RUSBF075-2 PTC Resettable Fuse is also suitable for power supplies and overcurrent protection for wireless charging and automotive Qi charging applications.

Conclusion

The RUSBF075-2 PTC Resettable Fuse is a reliable and cost-effective overcurrent protection device that is suitable for a variety of applications. It has a wide operating temperature range and a low resistance when cold, making it ideal for high-power applications. The device is also designed with a self-clearing function, making it suitable for applications where the current flow exceeds the rated current value.

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