H8390RFCA

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Through Hole Resistors have an important place in all kinds of electronics. They are used in almost every device and system from toys to industrial and aerospace applications. The H8390RFCA is a Through Hole Resistor specifically designed for high voltage applications. It combines the advantages of a PTC (Positive Temperature Coefficient) resistor and a ceramic disc resistor in one convenient package.

The H8390RFCA offers several unique features. First, it has flexible mounting options. The resistor can be mounted horizontally or vertically, making it great for tight spaces or close to other components. Second, it is rated for a very high voltage of 3700 VAC. This makes it perfect for industrial and aerospace applications. Third, it has high power dissipation ratings, allowing it to operate at temperatures as high as 125°C. Finally, it is UL recognized, making it compliant with most safety and regulatory standards.

The H8390RFCA works by using a ceramic disc resistor as the primary resistor element. This produces a predictable and repeatable resistance value. The ceramic disc is then embedded in a high temperature plastic housing that includes a PTC resistor as the thermal protection element. This combination provides a sturdy and reliable device with excellent high voltage characteristics.

The working principle of the H8390RFCA is quite simple. When the voltage across the device increases, the current increases as well. This causes heat to build up in the resistor, which triggers the PTC element. The PTC increases the resistance of the device, limiting the current and dissipating the excess heat. This protects components downstream from the resistor. When the voltage drops again, the PTC element resets and the resistor returns to its normal resistance value.

The H8390RFCA is a great choice for high voltage applications. Its combination of a ceramic disc and a PTC (Positive Temperature Coefficient) resistor in one package makes it very reliable and robust. In addition, its ability to be mounted horizontally or vertically makes it a very versatile component.

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