LED SMD LED chips are categorized by core specifications based on package size. Key parameters revolve around photoelectric performance and application scenarios, clearly outlined below:

I. Core Specifications (Package Size) - 0402: 1.0mm × 0.5mm, ultra-small size, suitable for precision instruments and micro-devices. - 0603: 1.6mm × 0.8mm, general-purpose, commonly used for circuit board indicator lights and small backlights. - 0805: 2.0mm × 1.2mm, brightness slightly higher than 0603, widely used in consumer electronics and lighting modules. - 1206: 3.2mm × 1.6mm, slightly higher power, suitable for indicator lights and decorative lights requiring higher brightness. - 2835: 2.8mm × 3.5mm, high brightness mainstream model, used for LED tubes, panel lights, and spotlights. - 3014: 3.0mm × 1.4mm, medium to low power, suitable for backlights, LED strips, and ambient lighting. - 5050: 5.0mm×5.0mm, multi-chip package (commonly 3 chips), rich colors, used for LED strips and decorative lighting.
- 5730: 5.7mm×3.0mm, high power and high brightness, suitable for industrial lighting and outdoor lighting fixtures.

II. Key Parameters

1. Electrical Parameters
- Voltage: Monochrome LEDs (red/green/yellow) 1.8-2.4V, white/blue/violet 2.8-3.6V.
- Current: Standard low power (0402-1206) 20mA,

medium power (2835/3014) 30-60mA, high power (5730) 150-300mA.
- Power: Low power 0.06-0.1W, medium power 0.1-0.5W, high power 1-3W.

2. Optical Parameters - Brightness: Measured in lumens (lm), low power 0.5-5lm, medium power 5-30lm, high power 30-150lm. - Color Temperature: White light is divided into warm white (2700-3500K), natural white (4000-5000K), and cool white (6000-7000K). - Color Rendering Index (CRI): General model ≥70, indoor lighting requires ≥80, high CRI model ≥90. - Beam Angle: Standard 120°, focused model 30-60°, side-emitting model 180°.

3. Other Parameters - Lifespan: 50,000-100,000 hours under normal use, affected by temperature and current. - Operating Temperature: -20℃~+60℃, outdoor models can withstand -40℃~+85℃. ### III. Key Selection Criteria - Choose size based on space: 0402/0603 for precision equipment, 2835/5050 for general lighting. - Choose power based on brightness: low-power for indicator lights, medium to high-power for main lighting.

Selecting LED chips requires knowing what information to provide to the supplier for targeted selection.

The supplier should specify the application of the LED chips in the project, the current industry situation, the problems to be solved, and the specific parameters required during the selection process, including color temperature and lifespan.

This makes the application much clearer. Understand? Based on these requirements, the selected LED chip parameters, functions, materials, and processes are guaranteed.

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