SRP350

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PTC Resettable Fuses

PTC (Positive Temperature Coefficient) Resettable Fuses are components of modern day electronics that provide protection against voltage and current overloads. PTC Resettable Fuses are often found in consumer electronics, power supplies, adaptors, and industrial applications.

The basis of operation of PTC Resettable Fuses is to sense the temperature of the ambient environment, detect when the temperature reaches a certain level that is unsafe, and then shut off the power supply to the device. This ensures the safe operation of the device by preventing it from being damaged or overheating.

SRP350 Application Field and Working Principle

The SRP350 is a PTC Resettable Fuse that is designed for both over-current and over-temperature protection. It is widely used in consumer electronics, audio-visual equipment, communications, and industrial equipment due to its many features and benefits.

The working principle of the SRP350 PTC Resettable Fuse is simple and highly reliable. The device utilizes a metal oxide element that is connected in series with the power supply. This metal oxide element has a positive thermal coefficient, meaning that its electrical resistance increases as its temperature increases. In other words, when the temperature of the device rises above the rated temperature, the resistance of the metal oxide element increases, causing the power supply to be cut off. This prevents the device from overheating or being damaged.

The SRP350 also has wear-levelling technology which reduces the impact of frequent current cycle operation on the life of the device. Moreover, the device has automatic reset capabilities which allows it to reset itself after an overcurrent or overtemperature event.

Furthermore, the SRP350 PTC Resettable Fuse has a wide range of operating temperatures which makes it suitable for use in a variety of applications. It has a temperature rating of 15°C to +125°C, with a breakdown voltage range of over 98% at 25°C. Additionally, the fuse has various approvals including UL, CUL, PSE and VDE.

Conclusion

PTC Resettable Fuses are an important component for the safe operation of electronic devices, and the SRP350 is one of the most popular devices on the market. Its application field and working principle make it suitable for a range of consumer products, with its wide range of operating temperatures and automatic reset capabilities being particularly useful features. With its many advantages, the SRP350 can be considered a reliable and trusted device for providing overcurrent and overtemperature protection.

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