SQM200JB-39R

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Through hole resistors are one of the most commonly used electrical components for managing electrical current and voltage levels. SQM200JB-39R is a through hole resistor designed for use in industrial applications and is suitable for high-precision applications such as in motor speed control and LED lighting. In this article, we will discuss the application field and working principle of this through hole resistor.

The SQM200JB-39R is a thick film resistor which is designed for precision and stability across broad temperature ranges, and it is available in a TO-39 package with a lead spacing of 5.6mm. This resistor is rated for 300W power dissipation and 25A maximum current, making it suitable for high-power applications such as motor speed control and LED lighting. Additionally, the resistor features a high-temperature operation range of up to 125°C and a wide operating temperature range of -40°C to 100°C. This makes it a great option for industrial applications, which often require components that can endure extreme temperatures.

In terms of performance, the SQM200JB-39R features a precision tolerance of ±0.10%, which is important for applications that require high-precision voltage or current control. Moreover, the resistor has a low temperature coefficient of resistance (TCR) of ±50ppm/K over the operating temperature range. This ensures that the resistor maintains its resistance level even when subjected to extreme temperatures. Additionally, the resistor has a resistance range of 0.162Ohm to 883Ohm, which makes it suitable for both low- and high-power applications.

The working principle of the SQM200JB-39R is based on its thick-film construction. A thick-film resistor is composed of a ceramic substrate and a resistive layer. The resistive layer is composed of noble metals such as palladium, silver, and gold, and an organic binder, such as a polyester or acrylic. These metals are deposited onto the substrate in a thin film and then heated to form a highly conductive surface. The resistor then exhibits its resistance by dissipating the current through this surface.

The SQM200JB-39R is a popular choice for industrial applications due to its high-precision tolerance, wide operating temperature range, and long-term stability. The resistor is well-suited for high-power applications such as motor speed control and LED lighting, as it is rated for 300W power dissipation and 25A maximum current. Additionally, the resistor features low TCR and good temperature insulation properties, which makes it a great option for high-temperature applications. All in all, the SQM200JB-39R is a great choice for managing electrical current and voltage levels in industrial applications.

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