5530121F

Series:	553
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Color:	Green (x 1), Red (x 1)
Wavelength - Peak:	563nm, 650nm
Configuration:	2 High
Current:	10mA
Millicandela Rating:	16mcd Green, 10mcd Red
Viewing Angle:	--
Lens Type:	Diffused, Tinted
Lens Style/Size:	Round with Domed Top, 3mm (T-1)
Voltage Rating:	2.1V Green, 2V Red
Mounting Type:	Through Hole, Right Angle

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LEDs - Circuit Board Indicators, Arrays, Light Bars, Bar Graphs

Light-emitting diodes (LEDs) are miniature solid-state devices that utilize electroluminescence to produce visible light. These devices have an extremely wide variety of applications, such as indicators, signal lights, advertisement lighting, automotive lighting, and display backlighting. 5530121F is an LED unit of circuit board indicator, which has diverse applications and functioning principles.

5530121F Application Field

The 5530121F LED unit is mainly used in potential indicators and signal lights. It is a LED device with a wide viewing angle and is suitable for various applications such as:

• Street light traffic control systems.
• Traffic signal indication.
• Police, fire and ambulance warning signals.
• Industrial audio/visual alarm signals.
• Automotive and other industrial indicators.
• Illumination for lighted cabinet and switch panels.

Besides these applications, 5530121F LED unit can also be used as a lightbar for aircraft or vehicles, bar graph displays and emergency warning signals.

5530121F Working Principle

The 5530121F LED unit consists of a light-emitting diode and a printed circuit board. The function of the LED is to emit light when supplied with a current; the purpose of the printed circuit board is to provide electrical connections and supports. How the LED works is quite simple. When the device is connected to a power source, electrons cross the junction between the n-doped and p-doped materials in the diode and cause what is known as a “forward voltage”. This causes electrons to recombine with holes in the p-doped region of the diode, releasing energy in the form of visible light.The printed circuit board of the 5530121F LED unit is used for two primary purposes. First, it provides the platform for the LED to be mounted on; the printed circuit board allows the LED to be securely attached in place. Secondly, it provides the necessary electrical connections for the LED. Usually, the printed circuit board is fitted with a selection of resistors, capacitors, and diodes to produce the electrical current required to safely operate the LED.

Conclusion

In conclusion, the 5530121F LED unit has a multitude of practical applications, from street lights and traffic signals to cabinet and switch panels. Furthermore, the LED components contained within the unit are easily understood and quickly explained. The printed circuit board within the unit serves multiple purposes, including mounting and electrical connection. As a result of this, the 5530121F LED unit is extremely reliable and suitable for a variety of uses.

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Part Number	Manufacturer	Price	Quantity	Description