5505205

Series:	550
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Color:	Green
Wavelength - Peak:	565nm
Configuration:	Single
Current:	20mA
Millicandela Rating:	34mcd
Viewing Angle:	50°
Lens Type:	Diffused, Tinted
Lens Style/Size:	Round with Domed Top, 5mm (T-1 3/4)
Voltage Rating:	2.2V
Mounting Type:	Through Hole, Right Angle

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

Light-emitting diodes (LEDs) are a type of semiconductor device used in a wide variety of applications. LEDs are used for simple indicators and low-power lamps, to complex circuits and board-level indicators, including arrays, light bars, and bar graphs. LEDs are usually referred to by their color; common colors include red, yellow, green, blue, and white. Different colors require different amounts of power to operate. Most LEDs require direct current at low voltage (around 3V to 5V) and have current ratings in the microamp to milliamp range. LEDs are usually used in small circuits (1” or less in size) and are very energy efficient, with relatively low power draw.

Circuit Board Indicators

LEDs are used in a variety of applications on circuit boards, including indicators, lamps, and other interface elements. A circuit board indicator is typically used to indicate the status of a circuit, such as whether it is powered on or off. Some indicators may be switch-operated, while others may be connected to a circuit to indicate the presence of a fault or low voltage. LEDs are also used to indicate the presence of a signal and to provide a visual feedback to the user.Circuit board indicators may be single LEDs or arrays of LEDs in various configurations, such as bi-color, tri-color, and multi-color. These arrays help to simplify circuit design by providing multiple indicators in a single package.

LED Arrays

LED arrays are formed by combining several individual LEDs into an array or network. Arrays are used to provide a brighter light output and can be used to create illumination patterns, such as a bar graph. LED arrays may also be used to display simple text, such as the current time or temperature.LED arrays may be constructed in a variety of shapes and sizes, including lines, rectangles, and circles. They can be used for decorative lighting, such as in architectural lighting or interior lighting, or for function-specific applications, such as in automotive dashboards.

Light Bars and Bar Graphs

Light bars and bar graphs are constructed by combining a series of LEDs into a single package. Light bars usually consist of an array of LEDs in a row, while bar graphs usually have an array of LEDs in a column. Both provide a visual representation of a value or condition. Light bars and bar graphs are used in many different applications, including automotive and consumer electronics. They are used to display the temperature, fuel level, RPMs, and other values, as well as for simple notification systems.

Conclusion

LEDs are a versatile and energy-efficient lighting solution that can be used for a wide variety of applications, from simple indicators to complex arrays, light bars, and bar graphs. LEDs provide a high-brightness illumination, even at low voltages, and their small size makes them ideal for use in small circuits. LEDs are used in a variety of applications, from display indicators to decorative lighting and automotive dashboards.

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