SQP500JB-680R

Through Hole Resistors have long been an essential component in electronic circuits. The SQP500JB-680R is a classic example of such a device, and its application and workings can be more easily understood, thanks to this extensive article.

Overview

The SQP500JB-680R is a through-hole resistor of type NTC (negative temperature coefficient), with rated resistance of 680 ohms at 25 °C. It comes in a cylindrical metal package and has pins for connecting with the circuit. It has a wide operating temperature range from - 55°C to + 150°C, and offers good temperature stability.

Principle and Function

The SQP500JB-680R works by passing a tiny current through a thin resistance element, causing a voltage drop across the element. This voltage is then sensed by the associated circuit, which can then be used to determine the resistance of the element. The resistance of the element is directly proportional to the temperature of the environment around it - when the environment gets colder, the resistance of the element increases, and when the environment gets hotter, the resistance of the element decreases.

As the SQP500JB-680R has a negative temperature coefficient, its resistance will decrease as the temperature increases. This makes it ideal for regulating the current through a circuit, as it will respond to small changes in temperature quickly and accurately without the need for manual adjustment.

Applications

The SQP500JB-680R can be used in a wide variety of applications, including controlling the current in motors, protecting against short circuits, and providing voltage regulation. In addition, the wide operating temperature range makes it suitable for use in harsh environments such as automotive, medical, and military applications.

Due to its relatively low rated resistance, the SQP500JB-680R is particularly suitable for use in high-voltage circuits. It can even be used in high-voltage inverters, where it can help to reduce the power usage.

Conclusion

The SQP500JB-680R is an invaluable part of any electronic circuit. With its wide operating temperature range and low rated resistance, it is well suited for a range of applications where precise temperature control or voltage regulation are required. Its simple yet effective function, coupled with its robust construction, makes it an ideal choice for countless applications.