L25J2R0

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Chassis Mount Resistors

A chassis mount resistor is a passive electrical component, typically constructed from a metal or ceramic material, and used to provide a fixed path for current to flow through. It has two terminals, one of which terminates the input current or voltage while the other output is connected to ground or a load. This type of resistor is often used in automotive and avionics applications, as well as in power supplies and communication systems.

The most common chassis mount resistor is known as an L25J2R0. This component has a maximum operating voltage of 250 volts and an operating temperature range from -55 to 125°C. The power dissipation rating of this resistor is 2 watts, without over voltage or over current protection. As with most resistors, the L25J2R0 features four color bands that indicate its value in Ohms (resistance).

The application field of the L25J2R0 chassis mount resistor includes automotive and avionics applications, as well as DC power supplies, portable equipment, and communication systems. Its primary use is for controlling current in these systems, as it can be adjusted to exact specifications for a given application. It is also especially useful in automotive applications due to its thermal tolerance and its ability to remain stable over a wide range of temperatures.

The working principle of a chassis mount resistor is based on the Joule heating effect. This occurs when electric current passes through a resistor, creating heat according to Ohm’s law. This heat is then dissipated through the terminals of the resistor, leaving a negligible temperature rise inside the component. The resistor is capable of operating at higher current and voltage levels, as long as their power rating is not exceeded.

Due to its widespread applications, the chassis mount resistor is one of the most easily recognizable electrical components. It can be identified by its four color bands, which indicate the value of the resistor in Ohms. Additionally, the component also features two terminals at either end, on which current is fed through and out of the device.

In conclusion, the chassis mount resistor is one of the most popular components used in automotive and avionics applications. The L25J2R0 is one of the most popular models, and is capable of operating up to 250 volts with a power dissipation rating of 2 watts. Its working principle is based on the Joule heating effect, and it can be identified by its four color bands and two terminals.

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