INDUSTRY COMPONENT

LED Chip

LED chip is the core semiconductor component that converts electrical energy into visible light through electroluminescence in solid-state lighting systems.

Component Specifications

Definition
An LED chip is a semiconductor device fabricated from materials like gallium arsenide (GaAs), gallium phosphide (GaP), or indium gallium nitride (InGaN) on a substrate. It consists of a p-n junction where electron-hole recombination produces photons. The chip's structure includes epitaxial layers, electrodes, and sometimes phosphor coatings for color conversion. Key parameters include forward voltage, luminous flux, wavelength, and thermal resistance. LED chips are mounted on packages with heat sinks and optical elements to form complete LED devices used in various lighting applications.
Working Principle
LED chips operate on the principle of electroluminescence in a semiconductor p-n junction. When forward-biased, electrons from the n-type region and holes from the p-type region recombine at the junction, releasing energy as photons. The wavelength (color) of emitted light depends on the bandgap energy of the semiconductor material. For white LEDs, blue or UV chips excite phosphor coatings to produce broad-spectrum white light. Efficiency is influenced by material quality, junction design, and thermal management.
Materials
Semiconductor: InGaN (blue/green/white), AlInGaP (red/yellow), GaAs (infrared). Substrate: Sapphire (Al2O3), silicon carbide (SiC), silicon (Si), or gallium nitride (GaN). Electrodes: Gold, aluminum, or copper. Encapsulation: Silicone or epoxy resin. Phosphor: YAG:Ce for white LEDs.
Technical Parameters
  • Lifetime >50,000 hours
  • Chip Size 10-45 mil (0.25-1.14 mm)
  • Wavelength 450-460 nm (blue), 520-530 nm (green), 620-630 nm (red)
  • Luminous Flux 50-200 lm per chip
  • Forward Voltage 2.8-3.6V
  • Thermal Resistance 5-15 K/W
  • Operating Temperature -40°C to +125°C
Standards
IEC 62031, JEDEC JESD51, ISO 9001, DIN EN 62471

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for LED Chip.

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Electrostatic discharge damage
  • Thermal runaway due to poor heat dissipation
  • Color consistency issues in batch production
  • Delamination of phosphor layers
FMEA Triads
Trigger: High junction temperature exceeding rated limits
Failure: Reduced luminous flux, color shift, and shortened lifespan
Mitigation: Implement thermal management with heat sinks, use materials with high thermal conductivity, and design for adequate airflow
Trigger: Electrostatic discharge during handling or assembly
Failure: Catastrophic chip failure or latent defects
Mitigation: Use ESD-protected workstations, grounding straps, and antistatic packaging
Trigger: Poor wire bonding or solder joint quality
Failure: Intermittent electrical connection or open circuit
Mitigation: Optimize bonding parameters, perform pull tests, and use automated inspection systems

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±5% for forward voltage, ±3 nm for dominant wavelength, ±10% for luminous flux
Test Method
Electrical testing with parameter analyzers, optical testing with integrating spheres, thermal testing with T3ster systems, and reliability testing per JEDEC standards

Buyer Feedback

★★★★☆ 4.6 / 5.0 (8 reviews)

"The technical documentation for this LED Chip is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Computer, Electronic and Optical Product Manufacturing environments. No issues with the LED Chip so far."

"Testing the LED Chip now; the technical reliability results are within 1% of the laboratory datasheet."

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Frequently Asked Questions

What is the difference between an LED chip and an LED package?

An LED chip is the bare semiconductor die that emits light, while an LED package includes the chip mounted on a substrate with electrical connections, thermal management, and optical elements like lenses or phosphors.

How does chip size affect LED performance?

Larger chips generally produce higher luminous flux and better thermal dissipation but may have lower efficiency due to current crowding. Smaller chips offer higher density for applications like displays but require precise handling.

What causes LED chip degradation over time?

Degradation results from factors like junction temperature rise, electrostatic discharge, moisture ingress, and material defects, leading to reduced luminous output and color shift.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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