QSMT-FJ17-AFH00

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 LEDs have become increasingly popular components in many applications. The QSMT-FJ17-AFH00 is an LED indicator in the field of discrete components. It is a single-die, surface-mountable indicator. This article will discuss the application field and working principle of this LED.

Application Field

The QSMT-FJ17-AFH00 is a single-die, surface-mountable device that provides a single-level discrete indication. It is designed for applications requiring a discrete indication where the size of the indicator is a concern. It is ideal for illuminating the backlit buttons on consumer electronics, gaming machines, and remote controls. Additionally, its surface-mountable construction makes it well-suited for printed circuit board (PCB) applications.

The QSMT-FJ17-AFH00 is available in blue and green, with a wide angle of view. It has a housing dimension of 4.9mm x 4.6mm x 2.8mm, making it well-suited for applications where space is limited. The device operates at a voltage of 4.5V and draws a maximum current of 30mA. Its operating temperature range is from -40°C to +85°C. It has an expected lifespan of 10,000 hours, with a typical luminous intensity of 20 to 50 mcd.

Working Principle

The QSMT-FJ17-AFH00 is a Device Light Emitting Diode (LED) indicator. It uses p-n junctions, which are a type of semiconductor junction composed of a p-type semiconductor and an n-type semiconductor. When the forward-bias voltage is applied to the p-n junction, majority carriers from the n-side cross the junction barrier and combine with the majority carriers from the p-side, creating a recombination current in the junction. This current recombination produces light, which is emitted from the LED.

The QSMT-FJ17-AFH00 is a powered-off LED indicator, which means that it does not turn on until an external voltage is applied to the LED. Once the voltage is applied, the LED will illuminate. The LED will remain illuminated until the voltage it is supplied with drops below the threshold voltage of the LED. As the LED consumes current, it will dim as the voltage drops. The LED will turn off once the voltage it is supplied with reaches 0V.

Conclusion

The QSMT-FJ17-AFH00 is an LED indicator in the field of discrete components. It is designed to provide a single-level indication and is well-suited for applications in consumer electronics, gaming machines, and remote controls where space is limited. It is powered-off, and is illuminated once an external voltage is applied to it. The LED will remain illuminated until the voltage it is supplied with drops below its threshold voltage. When the applied voltage reaches 0V, the LED will turn off.

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