CFR25SJR-52-390K

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Through Hole Resistors are widely used electronic components which have applications in all types of circuits. One such example is the CFR25SJR-52-390K. This resistor is a cost-effective single-ended axial-leaded through hole resistor capable of being used from -55°C up to +125°C Junction temperatures. It is designed with a nickel-plated-copper body for easy mounting on a printed circuit board, and is rated up to 150 volts.

The CFR25SJR-52-390K has many potential applications, most notably as a low-power, medium-voltage resistor in modern circuit designs. It is commonly employed in power supply functions, as part of DC-DC converters, and in other applications where the need to dissipate heat is essential. It is also well-suited for the audio and RF circuitry. The CFR25SJR-52-390K is available in 0.2, 0.3, 0.4 and 0.8 watt power ratings.

The working principle of the CFR25SJR-52-390K is quite simple. When a voltage is applied across it, electrical current passes through it. This current causes a certain amount of resistance, and thus dissipates power in the form of heat. This procedure is known as ohmic heating.

The resistor is constructed such that it has a small gap, or E-gap, in its construction in order to enhance the dissipation of power. As the temperature of the resistor increases, its resistance increases, thus controlling both the voltage and current in a circuit. In order to minimize thermal runaway, the resistor is designed with a thermal resistance known as the junction-to-ambient rating.

The CFR25SJR-52-390K also includes a fail-safe feature which limits the output to a safe level if the temperature exceeds its maximum rated value. This helps to ensure that the device does not damage the surrounding circuitry, should a fault condition occur. As a result, the CFR25SJR-52-390K is an ideal choice for applications requiring a reliable, high-temperature-resistant resistor.

In conclusion, the CFR25SJR-52-390K is a versatile, cost-effective and reliable through hole resistor capable of being used in a variety of situations where heat dissipation and high temperature resistance are required. It is suitable for power supplies, DC-DC converters and various audio and RF circuit applications. It has a fail-safe feature, and its thermal resistance can be used to prevent thermal runaway.

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