67-21/GBC-YV2W2N/2A0

Voltage - Forward (Vf) (Typ):	3.2V
Height (Max):	2.00mm
Size / Dimension:	3.50mm L x 2.70mm W
Supplier Device Package:	2-PLCC
Package / Case:	2-SMD, Gull Wing
Features:	--
Wavelength - Peak:	518nm
Wavelength - Dominant:	528nm
Mounting Type:	Surface Mount
Viewing Angle:	120°
Current - Test:	20mA
Series:	--
Lens Style/Size:	Round with Flat Top, 2.40mm
Millicandela Rating:	1350mcd
Lens Transparency:	Clear
Lens Color:	Colorless
Color:	Green
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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LED Indication – DiscreteLight-emitting diodes, or LEDs, have been used in discrete lighting applications, such as indicating a device is on or off, for many years. LEDs are relatively inexpensive, low power, and require minimal space compared with other common types of indicators. The 67-21/GBC-YV2W2N/2A0 LED is a commonly used type of LED for discrete indication.DescriptionThe 67-21/GBC-YV2W2N/2A0 LED is a two-lead device with a single incandescent-type bulb whose diameter makes it slightly larger than a dime. It has a glass body with a lead frame and encapsulated encapsulating compound. The leads, measuring 2.54 mm in length, are constructed of solid material, enabling it to withstand temperatures up to 125°C. The device has a rated operating voltage of 4.5 V, with total power dissipation up to 8 mW. Its lens color is greenish yellow and the typical hue is 555 nm.Application FieldThe 67-21/GBC-YV2W2N/2A0 LED is best suited for use in discrete applications where just a simple "on/off" indication is needed. Examples of typical applications include indicators for machine status, key locks, medical devices, doorbells, and automotive switches. This type of LED is preferable when higher operating temperatures, dust, and moisture are present.Working PrincipleLEDs use an electrical process called electroluminescence to produce light. In an LED, the electrons combine with holes in the semiconductor material to form an energy level, which then releases energy in the form of light when electrons move from the high energy level to a lower level. This process can be applied to different colors of light depending on the material used in the LED.The 67-21/GBC-YV2W2N/2A0 LED works in the same way as other LEDs. An alternating electric current is applied to the leads, which causes electrons to jump across the junction and into the semiconductor material. This excites the electrons in the semiconductor to a higher energy level, which they then release as light when they drop back to their original state.ConclusionThe 67-21/GBC-YV2W2N/2A0 LED is an ideal choice for discrete indication applications due to its relatively low cost, low power consumption, and small size. It is also suitable for environments with higher temperatures, dust, and moisture. The LED functions by applying an alternating electric current to the leads, which produces light by the process of electroluminescence.

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