MM3012FE-R58

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Through Hole Resistors are components of electronic circuits and are mainly used to limit currents and adjust signal levels in circuits. A typical through hole resistor is the MM3012FE-R58, a low-tolerance, cost-effective resistance-temperature coefficient resistance (PTCR) device. In this article, we will take a look into the features, application field, and working principle of the MM3012FE-R58.

Features

The MM3012FE-R58 is a PTCR through hole resistor with excellent resistance-temperature response. It is made up of a metal film substrate with a nickel-chromium-silicon alloy patterned on top. The top layer of the substrate is plated with PTFE to prevent chemical corrosion and graphite to provide electrical insulation. The MM3012FE-R58 also has a low tolerance rating of ±0.5%, allowing for accurate current control. Moreover, its large surface area provides a higher resistance value without having to build large outer casings.

Application Field

The MM3012FE-R58 is designed for applications in harsh environments or where high temperatures and vibration are present. It can be used in automotive systems, aerospace, power electronics, and other harsh environment applications. Due to its high operating temperature rating of 150°C and its ability to maintain its resistance even at extreme temperatures, the MM3012FE-R58 is ideal for applications in high vibration and temperature environments.

Working Principle

The working principle of the MM3012FE-R58 is based on the “thermistor effect”, a phenomenon in which the resistance of a material changes when its temperature changes. The device uses this effect to maintain an almost constant resistance even when the temperature or voltage changes. The resistance of the MM3012FE-R58 is determined by the composition of its nickel-chromium-silicon alloy. It also has two terminal connections, one lead for the cathode and one for the anode. When a voltage is applied, the current passing through the device is determined by the resistance of the resistor.

When the temperature of the device increases, the resistance of the alloy increases as well. This is beneficial in applications where the temperature increases constantly, such as in power electronics. It also works in the opposite direction: when the temperature decreases, the resistance decreases, thereby keeping the current consistent. This makes it extremely useful in automotive and aerospace applications where voltage instability can be a problem.

Conclusion

The MM3012FE-R58 is a high-quality through hole resistor designed for harsh environment applications. It has excellent resistance-temperature response and a low tolerance rating of ±0.5%. Furthermore, it can also maintain its resistance even at extremely high temperatures and vibration environments, making it an ideal choice for automotive and aerospace applications. Understanding the features, application field, and working principle of the MM3012FE-R58 can help you make the best decision for your circuit design.

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