PFVS.170 Circuit Protection

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PTC Resettable Fuses

PTC resettable fuses are an important component in many types of electrical equipment and other components because of their ability to reduce the risk of fire due to power surges. A PTC resettable fuse is a thermally sensitive, solid-state nonlinear resistor with an electrical characteristic that varies with increasing temperature which makes it an ideal overcurrent protection device. The PFVS.170, for instance, is a resettable fuse for use in many applications.

Application Field

The PFVS.170 resettable fuse is a cost-effective solution for many applications, such as power supplies, overload protection, overvoltage protection, and fault protection. It is ideal for power supplies, such as power adaptors, internet switches, modems, and routers, as well as other electrical and electronic devices. The PFVS.170 can also be used as a protection device in lighting systems, such as LED lighting, to protect against short circuits as well as power surges.

Working Principle

The PFVS.170 resettable fuse works by recognizing when an overcurrent /short-circuit condition has occurred and then shuts off the circuit to prevent further damage and hazard. It does this by responding to a temperature rise due to an excessive current passing through it. When the current exceeds the fuses threshold, the resistance element will heat up and gradually rise in value. This causes the device to become a high-resistance element, which then prevents further current from passing through it. The overload or short circuit is thus interrupted, protecting the circuit from further damage.

Once the circuit has cooled, the fuse will reset and be in its normal state, allowing the circuit to work normally. The device is non-aging, meaning it can be reset repeatedly without significantly affecting performance or lifespan. This makes it ideal for applications that need frequent overload protection, such as power supplies. The device also has an extremely low self-leakage current making it efficient and power savvy.

Advantages

The PFVS.170 resettable fuse has many advantages, including its low cost, reliability, and efficiency. It is also small, light weight, and has a wide operating temperature range that makes it suitable for a wide range of applications. It has a fast response time, meaning it can react quickly to an over current /short circuit condition and prevent further damage to the circuit. In addition, its low self-leakage current means that it is highly efficient and power-friendly.

The PFVS.170 is also RoHS compliant, making it safe to use in a variety of applications. In addition, it has the ability to be reset repeatedly without significantly affecting performance or lifespan, making it ideal for applications that need frequent overload protection, such as power supplies.

Conclusion

In conclusion, the PFVS.170 resettable fuse is an efficient, reliable, and cost-effective solution for many applications. It is suitable for a wide range of applications, from power supplies to lighting systems, and is RoHS compliant. Its fast response time, low self-leakage current, and ability to be reset repeatedly without significantly affecting performance or lifespan make it an ideal overload protection device.

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