HLMPM551 Optoelectronics

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LEDs are widely used in various applications due to their low energy consumption and long life. The HLMP-551 LED is an example of a discrete LED, commonly used as indicators in electronic products. This article will provide an overview of the HLMP-551\'s application field and working principle.

HLMP-551 is a high intensity, 5 mm (0.20 inch), top-viewed, gallium arsenide phosphide (GaAsP), optically diffused type LED. This LED is red in color and has a consistent, even light output. Due to its size, shape, light output and diffused package, the HLMP-551 is often used as an indication light in products. It\'s most commonly used to provide visual indication of power status, but is also used in display panels and for other various applications.

The HLMP-551 LED has a wide viewing angle of 120 degrees, allowing for wider-area visibility and greater readability of adjacent LEDs and other indicators from side angles. This wide viewing angle is particularly useful in larger panels, where multiple LEDs need to be arranged with maximum visibility. Due to its long life span, this LED is a cost-effective and reliable solution for many designs. In addition to its wide viewing angle and long life, the HLMP-551 also has low power consumption. It operates on 2.1V, consuming 1mA of current. This low power consumption ensures the device can be used in a wide range of applications that require minimal power.

The working principle of the HLMP-551 LED is based on the electroluminescent effect. When current runs through an LED, it emits light. The intensity of the emission is proportional to the voltage applied, up to the point of saturation. The HLMP-551 is a gallium arsenide phosphide (GaAsP) LED, which means it is more efficient in its light emission compared to other types of LEDs. This is due to the fact that the GaAsP material absorbs and radiates the energy more efficiently. It also has a higher efficiency of conversion from electrical energy to light.

In summary, the HLMP-551 LED is a discrete LED used for applications requiring visual indication of power status, such as status LEDs, panel display indicators and other types of indicators in electronic products. This LED has a wide viewing angle, low power consumption and long life, making it a reliable and cost-effective solution. The working principle of the HLMP-551 is based on the electroluminescent effect, where the emission of light is proportional to the applied voltage.

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