LTST-C250KRKT

Voltage - Forward (Vf) (Typ):	1.8V
Height (Max):	0.90mm
Size / Dimension:	3.20mm L x 1.20mm W
Supplier Device Package:	Chip LED
Package / Case:	2-SMD, No Lead
Features:	--
Wavelength - Peak:	639nm
Wavelength - Dominant:	631nm
Mounting Type:	Surface Mount
Viewing Angle:	130°
Current - Test:	20mA
Series:	--
Lens Style/Size:	Rectangle with Flat Top, 1.20mm x 1.20mm
Millicandela Rating:	113mcd
Lens Transparency:	Clear
Lens Color:	Colorless
Color:	Red
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction to LED Indication - Discrete

LED (Light Emitting Diode) indication is the method of lighting a LED in the presence or absence of a signal, such as voltage or current, or in response to a signal. Discrete LED indication is used for communicating certain states or conditions within a system or circuit. Discrete indication provides visible indication of the on/off status of system elements, such as an indicator that a circuit is energized.

LTST-C250KRKT Application Field & Working Principle

The LTST-C250KRKT is a red LED (Light Emitting Diode) tinted lens in GaAlAs infrared LED. The LED is a 635nm red LED, lead (Pb)-free, with a wide viewing angle, which is suitable for backlighting, and all types of indication, such as alarm, warning, keypad and status indications. The device has a high luminance rating, and is able to be driven with a current up to 50mA. The LTST-C250KRKT application field includes such as Display Equipment, Automotive Applications, Safety Light/Indicator/Warning Light, Office Equipment/Telecommunication, Audio-visual/multimedia equipment, Medical Equipment, and Office Furniture.The working principle of LTST-C250KRKT is based on the principles of an electricity-induced semiconductor. By applying a sufficient voltage to the P-type section of the semiconductor and then to the N-type section, electrons and holes are generated to form a charge-carrier current. When this current is passed through an LED, it causes the phosphor material within the LED\'s housing to emit light, which is visible to the naked eye. The emitted light has a characteristic colour which depends on the type of semiconductor material used and the light intensity is directly proportional to the amount of current passing through the semiconductor material.

Structure of LTST-C250KRKT

The LTST-C250KRKT consists of a lens and a light emitting diode that can be used as indicator for many applications. The LED is composed of a multilayered semiconductor material (doped with phosphorous, arsenic or other elements). The semiconductor material interacts with electrons to generate photons (light) when voltage is applied. The LED is composed of all layers etched onto a flat sheet of the material. The top layer contains the contacts (Anode and Cathode) to which an electric current is applied. Then the LED is encapsulated in a plastic resin to create a package and lens. The lens is also made of a material that has a low index of refraction so that the light emitted will disperse outward and not be directed internally.

Advantages of the LTST-C250KRKT

The LED indicator can provide a range of advantages to users over traditional forms of providing indication, such as bulb-based solutions.The LED is more efficient and produces more light for the same amount of energy as compared to a traditional bulb-based solution. It is also much smaller in size so that it can be used in many applications that otherwise would not have been possible. Furthermore, the LED has a much lower heat generation than a traditional bulb-based solution and so is much safer to use.The LED also has a much longer lifetime than a traditional bulb-based solution, with some LEDs having lifetimes of up to 50,000 hours. This makes it much more cost-efficient in the long-run as it does not need to be replaced like a traditional bulb.

Conclusion

The LTST-C250KRKT is a red LED that can be used for a range of application fields, such as Display Equipment, Automotive Applications, Safety Light/Indicator/Warning Light, Office Equipment/Telecommunication, Audio-visual/multimedia equipment, Medical Equipment and Office Furniture. The LED consists of a lens and a light emitting diode and is powered by applying voltage to the P-type and N-type sections of the semiconductor material. The LED is much more efficient and produces more light for the same amount of energy, is much smaller in size, has a much lower heat generation and much longer lifetime making it more cost-efficient in the long-run.

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