HLMP-1520

Current - Test:	10mA
Base Part Number:	HLMP-1520
Height (Max):	6.35mm
Size / Dimension:	--
Supplier Device Package:	T-1
Package / Case:	Radial
Features:	--
Wavelength - Peak:	565nm
Wavelength - Dominant:	569nm
Mounting Type:	Through Hole
Viewing Angle:	45°
Series:	HLMP-152x
Voltage - Forward (Vf) (Typ):	2.1V
Lens Style/Size:	Round with Domed Top, 3mm (T-1), 2.92mm
Millicandela Rating:	22mcd
Lens Transparency:	Clear
Lens Color:	Green
Color:	Green
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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LED Indication - Discrete

LEDs, short for Light Emitting Diodes, are diodes primarily used for the purpose of emitting light when a current passes through them. Discrete LEDs are used for a variety of lighting tasks and typically specifically produced for a single purpose. The HLMP-1520 is a common discrete LED and comprises discrete packages generally used as indicators in a variety of electrical and electronic applications.

HLMP-1520 Design

The HLMP-1520 is a T-1 (3mm) LED lamp of the type characterized by a single LED in a rectangular, 3-pin lamp package. This LED is packaged in a black, heat-resistant T-1 case, and features a transparent white plastic lens that emits a green, red, or amber light depending on the color chosen. It has three leads : an anode and a cathode, and a ground, with a recommended pad layout to accommodate the various colors available.

Operation

LEDs can operate in either linear or switching modes depending on the design. In the case of the HLMP-1520 LED, operation is in linear mode. Upon introduction of a current through the LED, the LED emits visible light in direct proportion to the current applied. This type of LED is known as an electron maLED (ELM) LED, and these LEDs are designed to operate in a linear fashion.

The Peak Wavelengths

The HLMP-1520 has a peak wavelength of either 690nm for red/amber colors or 525-535nm for green colors. Depending on the color desired, a peak wavelength of either 690nm or 525-535nm will determine the amount of visible light it can produce.

Power Draw and Heat Dissipation

The HLMP-1520 has a maximum power draw of 200-400mW and a heat dissipation of 0.7-1.2 Watts depending on the color chosen. As LEDs are primarily intended to be used as indicators, they rarely require a power draw greater than a few hundred milliwatts. The small size and high efficiency of LEDs allow them to be used in a range of applications without requiring significant power draw or heat dissipation.

Driving Configurations

The HLMP-1520 can accept either direct current or pulsed currents in order to achieve operation. Were the HLMP-1520 to be used in direct current operation, a two-terminal configuration would be used. The two terminals used would be the anode (positive) and cathode (negative). When being used in pulsed current operation, a three-terminal configuration would be used, with the additional terminal being the ground. The pulsed current option is primarily preferred as it can be used in applications that require precision and higher current accuracy, such as motion detection.

Applications

The HLMP-1520 LED is often used as an indicator in a wide range of electronic and electrical applications, primarily due to its small size, bright light output, and power efficiency. It can be found in various forms of equipment such as dashboards, mobile phones, audio systems, coin-operated vending machines and gaming machines. Additionally, it is used as a status indicator in printers, modems, bar code scanners, and more. The particular color of the LED -- green, red, or amber -- will inform users of various functional details, such as power on and off in a device or system. Overall, the HLMP-1520 LED is a versatile and viable LED for many types of applications due to its reliability and ability to be used in both linear and switching modes.

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