VLR170LF

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PTC Resettable Fuses, of which the VLR170LF is one, are an important electronic component. They represent a break in the circuit that is made to prevent electrical shock or damage to any equipment that could be connected to the circuit. This type of fuse, when it detects a fault condition, will trip and open the circuit.

As the name implies, PTC Resettable Fuses use a Positive Temperature Coefficient (PTC) of resistance to protect a system from excessive current. The fuse contains a conductive polymer material that, when heated by a sudden surge in current, will rapidly increase its resistance. This rise in resistance causes the current passing through the fuse to drop below the allowable rating and the fuse will trip, disconnecting the circuit.

The VLR170LF is designed to operate in an operating range of -40°C to +85°C. It can be used in a wide range of applications, such as consumer electronics, medical equipment, light fixtures, motor controllers and automotive systems. It is rated to operate at -60mA with a current rating of 10A, making it suitable for use in sensitive electronic circuits.

The working principle of the VLR170LF is simple. When a surge in current is detected by the PTC resistor inside the fuse, it will increase its resistance, thus dropping the current to a safe level. This drop in current causes the fuse to trip and the circuit to be disconnected. The PTC resistor is able to reset after power is disconnected, which allows the circuit to be reconnected once the fault condition has been cleared.

Although the VLR170LF is a fairly robust device, it is important to note that it can still be damaged by excessive current. The recommended maximum operating current is 10A so it should never be used in a circuit that carries more than that. It also has a maximum operating temperature of 85°C, so it should never be used in a circuit that is operating at temperatures higher than that.

The VLR170LF is a highly reliable and cost-effective solution for protecting a variety of electronic circuits. With its wide operating range and high current rating, it is suitable for use in a wide range of applications. It can also be reset manually, providing an extra layer of protection when the fault condition has been cleared. Its robust design and low cost make it an ideal choice for designers who are looking for a robust and cost-effective solution for protecting their equipment.

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