LR2F390R

Through Hole Resistors are one of the first components used in electrical systems and remain a key component to this day. The LR2F390R is a 0805 size through hole resistor used primarily for power supply and audio applications. It is a popular choice among engineers due to its reliable performance and affordability.

The LR2F390R contains a fixed resistance element, usually made from a combination of materials such as carbon, metal, and chromium. The resistance element is housed in a ceramic casing and is connected to two copper leads. These leads form the terminals of the resistor, which make electrical contact with the board surface. The leads are separated from the resistor body by a glass-filled epoxy material.

The primary purpose of a resistor is to reduce electrical current in an electrical circuit. In most circuits, a resistor is used to reduce the voltage of the signal being sent from one component to another. In addition to this, resistors are used to limit the current, filter noise, and create electrical delays. For the LR2F390R, it is mainly used to reduce the power supply voltage, filter audio, and protect against damage caused by excessive current.

The LR2F390R’s small size and low profile design make it an ideal choice for use in portable devices. Its low profile also makes the resistor easier to integrate into both printed circuit boards and multi-layer boards. The resistor is rated for 1/6W power dissipation, which makes it suitable for both high-frequency and low-frequency circuits.

The working principle of the LR2F390R is simple yet effective. When an electrical current passes through the resistor, the resistance element absorbs the energy and converts it into heat. This energy is dissipated by the resistor casing and dissolves into the surrounding air. The amount of energy absorbed depends on the value of the resistor and the amount of current flowing through it.

The LR2F390R is a reliable and cost-effective through hole resistor that is well suited for a variety of applications. Its small size and low profile make it ideal for power supply, audio, and protection applications, and its low power dissipation makes it suitable for high-frequency and low-frequency applications. Its simple working principle makes the LR2F390R a popular choice for engineers.