QTLP9122 Optoelectronics

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LEDs are among the most popular electric components used to indicate light or display information. The QTLP9122 is an LED indicator manufactured by Lite-On Technology Corporation. It is designed for various industries, including automotive, electronic, and industrial control applications. The device is a two-terminal Bi-Color LED Indicator designed for quick and easy installation, which saves space and reduces wiring complexity. It is a long-lasting and reliable source of light for providing visual feedback to the user regarding the status of an electrical system. This article will discuss the application fields and working principle of the QTLP9122.

Application Fields

The QTLP9122 is ideal for signal indicating applications requiring high reliability in a variety of industries. It is particularly suitable for automotive, electronic, and industrial control applications. It is also used in circuit boards and control panels. The device has several advantages, including high noise immunity, minimal installation space, lower current consumption, and reduced wiring complexity. The LED indicator is designed for long-term applications and can encapsulate a variety of plastic mouldings, including unipolar and bipolar indicators. Its two terminals make it easy to install in tight spaces and facilitates wire routing.

Working Principle

The QTLP9122 is a bi-color LED indicator that features two different colors, red and green. This device is designed to produce a bright, illumination-grade indication in both colors as a continuous, dimmable light source. Two small contact pins are located on each end of the device. The upper contact pin (MTK) is the common anode while the lower contact pin (MKS) is the common cathode. This allows the device to produce illumination without requiring the use of common anode and cathode leads. When two different voltage sources are applied to the two pins, an electrochemical reaction takes place within the device, which then radiates energy in the form of visible light. This allows for continuous light, as well as dimming controls by adjusting the voltage applied to the two pins.

Conclusion

In conclusion, the QTLP9122 from Lite-On Technology Corporation is a two-terminal bi-color LED indicator designed for flexible applications such as automotive, electronic, and industrial control. It is a long-lasting source of illumination for status alerts, as well as dimming controls. The device is also highly reliable and also features minimal installation space, low current consumption, and reduced wiring complexity. It is a cost-effective and reliable way to add visual cues in any application.

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