SQM500JB-4K3

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Introduction

Through hole resistors are discrete electronic components which feature an encapsulated, typically cylindrical, housing containing the resistive elements of the device. Through hole resistors, and their surface mount counterparts, are amongst the most common components in any electronic design, and are used in a wide range of applications including power supply regulation, signal conditioning, and system protection. The SQM500JB-4K3 is a 5 W linear through hole resistor that occupies a 0.83 inch by 0.79 inch mounting board area.

Applications of SQM500JB-4K3

The SQM500JB-4K3 is a high-power, 3-terminal through-hole resistor designed for use in power supply regulation, signal conditioning, or system protection applications. It is ideal for applications that require a high power rating and a low thermal resistance. The SQM500JB-4K3\'s internal design allows it to dissipate heat quickly and evenly, which makes it suitable for use in high-powered applications such as power supplies and digital circuits. In addition, the SQM500JB-4K3 features a rated power of 5 W, a temperature coefficient of 20 ppm, and a maximum operating temperature of +150°C.

Working Principle of SQM500JB-4K3

The SQM500JB-4K3 is a three-terminal through-hole resistor that works on the principle of resistive heating. It uses a resistive-type terminal to connect two external leads. One of the external leads is connected to a positive DC voltage while the other is connected to a negative DC voltage. The resistor heats up as current passes through it, and the amount of heat generated is directly proportional to the current flowing through it. The heat generated by the resistor causes the temperature of the resistive element to rise, which in turn increases the resistance. As the resistance increases, the current flowing through the resistor decreases, and the resistor begins to dissipate the heat generated by the current.

Advantages of SQM500JB-4K3

The SQM500JB-4K3 offers many advantages, including:

• Low thermal resistance: The SQM500JB-4K3 offers superior thermal performance compared to other through-hole resistors, making it ideal for high-power applications.
• Long life: The SQM500JB-4K3 is designed for a long lifespan. This makes it suitable for applications that require long-term stability.
• High power rating: The SQM500JB-4K3 has a maximum power rating of 5 W and can dissipate heat quickly and efficiently over its rated range.
• Cost-effective: The SQM500JB-4K3 is a cost-effective solution for through-hole resistor applications, providing a reliable performance and a long life span.

Limitations of SQM500JB-4K3

The SQM500JB-4K3 also has some limitations:

• Can only be used in 3-terminal through-hole resistor applications.
• The temperature coefficient of 20 ppm is not suitable for applications requiring precise temperature control.
• It is not suitable for applications requiring higher power ratings.

Conclusion

The SQM500JB-4K3 is a high-power, 3-terminal through-hole resistor designed for use in power supply regulation, signal conditioning, or system protection applications. Its design allows it to dissipate heat quickly and evenly, making it suitable for high-powered applications. The SQM500JB-4K3 also offers a long lifespan and a cost-effective solution for through-hole resistor applications. While it has limitations, such as a temperature coefficient of 20 ppm, the SQM500JB-4K3 is an ideal choice for applications requiring high power ratings and long-term stability.

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