AGRF800S-2

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PTC (Positive Temperature Coefficient) Resettable Fuses are commonly used in the electronics industry for overcurrent protection. The AGRF800S-2 is a PTC resettable fuse that is designed for applications including computer motherboards, LCDs, systems and audio systems. It has a wide range of operating temperatures and is applicable for both DC and AC applications. The AGRF800S-2 offers a higher current capability and fast response compared to traditional current limiters such as PTCs and thermal fuses. This allows the device to be used in a range of applications that require more stringent current protection.

The AGRF800S-2 is a polymeric positive temperature coefficient (PPTC) resettable fuse. A PPTC fuse is composed of a semiconductor material that contains conductive polymers. The PPTC has a higher resistance at low temperatures but will decrease resistance when the temperature increases. When an overcurrent flows through the fuse, the resistance increases until a critical point is reached. When this point is reached, the device fails and the current is interrupted.

The AGRF800S-2 is designed with a compact size and has an operating temperature of -20°C to +80°C. It has a low profile form factor of approximately 13mm x 6mm x 4.5mm and can be mounted onto the side of the board. The device offers a fast response time of 10us max. and a maximum current rating of up to 8A. It is also designed to feature a low clamp rating of 55 VDC and stays in a protection mode at temperatures below -20°C.

The AGRF800S-2 works by detecting an overcurrent condition and reacting to it in a fraction of a millisecond, reducing current flow. The protection current of the device is referred to as the let-through current, which is the peak current that the fuse is designed to allow before it trips. The current rating of the device is defined as the maximum continuous operating current and is stated as 8A. The time to trip is the time taken for the fuse to reach its current trip level after the event of overcurrent is detected. This time period is typically much shorter than the 10us response time. If an overload or short circuit occurs, the device will enter a protection mode and protect the device or system from damage.

The AGRF800S-2 offers a variety of features, including excellent temperature stability, audible alert capability, reverse current protection, and hot pluggable protection. The device also features an all plastic terminal construction which provides an enhanced protection against shock and vibration. The AGRF800S-2 is also able to withstand up to ten reset cycles before reaching the end of its life.

The AGRF800S-2 is an ideal device for applications that require circuit protection and current limiting, due to its fast response time and specified current rating. It is a reliable and robust resettable fuse, suitable for protection from overloading and short-circuiting. It offers an excellent level of protection for motherboards, LCDs, systems and audio systems, and can be used in a wide range of applications that require more stringent current protection.

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