PCH125-RG Optoelectronics

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Light emitting diode (LED) indications are used in various applications including consumer electronics, communication and instrumentation. Discrete LED indications, such as the PCH125-RG, provide a simple and reliable way to provide feedback to users. This article will explain the application field and working principle of the PCH125-RG.

The PCH125-RG is a red/green dual color LED which is suitable for a range of applications. It offers a higher luminous density than common dual color LEDs, giving it a brighter intensity at the same current. This makes it suitable for applications where a high luminous intensity of the colored part is required, such as instrumentation devices, telecommunications and consumer electronics.

The working principle of the PCH125-RG is based on the use of two internal LEDs, red and green. The LEDs are connected to the power source through two current-limit resistors; one for each LED. By varying the resistors, the ratio of the current flowing through the green LED to the red LED can be adjusted. This determines the ratio of red to green emitted from the LED.

The LED is driven from a single power source. When the current source provides a negative DC voltage, the current flowing through the LED is determined by the specific value of the current-limit resistor and the voltage drop across the LED itself. In the case of a PCH125-RG, the maximum current rating is usually set to 50 mA, which is sufficient for most applications.

The PCH125-RG is designed to operate in a range of temperatures and environmental conditions. It is constructed using robust materials which are designed to withstand extreme heat, cold and humidity. This makes it suitable for use in a variety of industrial applications. Additionally, it is RoHS compliant, making it an environmentally friendly choice.

The PCH125-RG is also designed for ease of assembly. It can be soldered directly onto a circuit board, eliminating the need for extra components such as sockets. It is available in a variety of package types, such as through-hole and surface-mount, making it suitable for a variety of applications.

In summary, the PCH125-RG is a red/green dual color LED which is suitable for a range of applications due to its high luminous density, robust design and easy assembly. The working principle of the LED is based on two internal LEDs, red and green, which are driven through two current limit resistors. This allows the ratio of red to green emitted from the LED to be adjusted depending on the specific application. The PCH125-RG is RoHS compliant and is available in a variety of package types, making it suitable for a range of applications.

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