LED chips/dies: Chip Size 0.1×0.1 mm to 1.0×1.0 mm

Component Specifications

Definition

LED chips, also known as LED dies, are the core semiconductor components within LED packages that generate light through electroluminescence. These chips consist of multiple semiconductor layers (typically gallium nitride-based materials) deposited on a substrate. When forward voltage is applied across the p-n junction, electrons and holes recombine, releasing energy in the form of photons. The wavelength (color) of emitted light depends on the semiconductor material's bandgap energy. LED chips are characterized by their small size (typically 0.1-1.0 mm²), high luminous efficiency, and directional light emission.

Working Principle

LED chips operate on the principle of electroluminescence in semiconductor materials. When forward bias voltage is applied to the p-n junction, electrons from the n-type region and holes from the p-type region are injected into the active region. These charge carriers recombine radiatively, releasing energy as photons. The semiconductor material's bandgap determines the photon energy and thus the emitted light wavelength. The chip structure includes multiple epitaxial layers (n-type, active region, p-type) grown on a substrate, with metal contacts for electrical connection.

Materials

Primary materials: Gallium nitride (GaN) for blue/white LEDs, Aluminum gallium indium phosphide (AlGaInP) for red/orange/yellow LEDs, Gallium arsenide (GaAs) substrates. Dopants: Silicon (n-type), Magnesium (p-type). Substrates: Sapphire (Al₂O₃), Silicon carbide (SiC), Silicon (Si). Electrodes: Gold, aluminum, or copper metallization.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Chip Size	0.1×0.1 mm to 1.0×1.0 mm
Luminous Flux	50-200 lumens per chip (at 350 mA)
Viewing Angle	120-140 degrees
Forward Current	20-350 mA
Forward Voltage	2.8-3.6V (typical for white LEDs)
Thermal Resistance	5-15 K/W
Dominant Wavelength	450-630 nm (depending on color)
Operating Temperature	-40°C to +125°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 23550, IEC 62031, JEDEC JESD51, ANSI C78.377

Parent Products

This component is used in the following industrial products

LED Array / Module

A compact assembly of multiple LED chips arranged in a specific pattern, typically mounted on a circuit board, that serves as the core light-emitting unit in RGB/RGBW lighting systems.

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Engineering Analysis

Risks & Mitigation

Electrostatic discharge damage
Thermal degradation from poor heat dissipation
Current crowding leading to localized overheating
Delamination of metal contacts
Moisture ingress causing corrosion

FMEA Triads

Trigger: Excessive forward current
Failure: Thermal runaway and catastrophic failure
Mitigation: Implement current limiting circuits and proper thermal management

Trigger: Electrostatic discharge during handling
Failure: Immediate or latent damage to semiconductor junctions
Mitigation: Use ESD-protected workstations and proper handling procedures

Trigger: Poor wire bonding
Failure: Intermittent electrical connection or complete open circuit
Mitigation: Implement automated optical inspection and pull testing of bonds

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±5% for forward voltage, ±3nm for dominant wavelength, ±10% for luminous flux

Test Method

Integrating sphere measurement for luminous flux, spectrometer for chromaticity, temperature-controlled probe station for electrical characteristics

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of LED chips/dies

Manufacturer profiles associated with LED chips/dies.

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the difference between LED chips and LED packages?

LED chips are the bare semiconductor components that generate light, while LED packages include the chip mounted on a substrate with phosphor coating, encapsulation, and electrical connections for practical use.

How long do LED chips typically last?

Properly manufactured LED chips can operate for 50,000-100,000 hours before lumen output degrades to 70% of initial value, depending on operating conditions and thermal management.

What determines the color of light emitted by an LED chip?

The semiconductor material's bandgap energy determines the photon wavelength. Different materials (GaN for blue/white, AlGaInP for red/orange) produce different colors. White light is typically created by combining blue LED chips with phosphor coatings.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

LED chips/dies