HVR250P120CR3F

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PTC Resettable Fuses, also known as polymeric-positive temperature coefficient (PPTC) fuses, are widely used in many industries. They are a type of current-limiting fuse that use an organic resin to create a thermal cut-off, resetting after the current is removed. The specific PPTC fuse model HVR250P120CR3F is widely used in a variety of applications, across multiple industries. In this article, we’ll discuss the application field and working principle of this model.

Application Field

The HVR250P120CR3F model is designed for applications that require high- are commonly used in industrial, data communication, electronic equipment, communication, automotive, and consumer appliance circuits. It can also be used to limit surge current pulses. This versatile component can be mounted on printed circuit boards, boards, and even directly connected to a termination device.

In industrial applications, the HVR250P120CR3F is used to protect sensitive components from high-frequency over-currents and current pulses. It is specifically designed to offer protection for high-frequency switching circuits and Power Factor Correction (PFC) circuits, which are used to manage the power supply of electronic devices. In data communication, the PPTC fuse is used to protect ports, leads, and modules from high fault currents. Additionally, it can be used in automotive circuits to protect against short circuits and in consumer appliances to protect against over-currents.

Working Principle

The HVR250P120CR3F is a PTC resettable fuse which operates on the principle of positive temperature coefficient. In this type of fuse, an organic material is used which has a high impedance (high resistance) when cold but as it is heated (when the current passes through the fuse) its resistance decreases. This allows the fuse to allow an increased current to flow without having to melt the fuse element or blow a switch. When the current increases to its maximum rated value, the fuse will trip and the heating element will cool down. This will cause the resistance of the fuse element to increase and the fuse will open.

Once the fault current is removed the fuse will reset itself and the PPTC fuse will be able to be reused. This is effective for low power circuits as the PPTC fuse is able to protect equipment from surge currents and short circuits multiple times.

The HVR250P120CR3F model has a low resistance of only 0.25 ohms and can handle currents up to 120A, making it an ideal choice for a wide range of PCB and power supply protection requirements. It offers a fast response time of 10 nanoseconds and is RoHS compliant, making it highly reliable and safe.

In conclusion, the HVR250P120CR3F PTC resettable fuse offers flexible protection from currents and fault current pulses across a wide range of applications. With its low resistance and fast response time, it is a reliable and safe choice for protecting components and power supplies.

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