1. Product Identification & General Information

· Product: SW3318E-G LED (and SW3318E-G(B) – indicating a variant, possibly a batch or minor revision)
· Manufacturer: AUK Corp. (implied)
· Intended Use: General electronic components (office equipment, measuring devices, appliances).
· Important Disclaimer: Requires consultation with AUK Corp. before using in high-reliability applications (medical, aerospace, safety systems). AUK Corp. disclaims liability if not used as intended.
· Specifications Subject to Change.

2. Electrical and Optical Characteristics

· Forward Voltage (Vf) and Luminous Intensity (Iv) Test Conditions: IF = 20mA, Ta=25℃.
· Grade Classification (Important for Quality Control):
* Vf Ranges: 2.9-3.2V (Grade 1), 3.2-3.5V (Grade 2), 3.5-3.8V (Grade 3).
* Iv Ranges: 310-520mcd (Grade O), 520-780mcd (Grade P), 780-1170mcd (Grade Q).
* Tolerance: Luminous Intensity tolerance for each grade is ±18%.
· CIE 1931 Chromaticity Diagram: (Refer to image) Shows color coordinates (X, Y) for various color bins (a, b, c). This is used to define the color produced by the LED, ensuring consistency.
· Diagrams: Include graphs illustrating:
* Forward Voltage vs. Forward Current (I-V)
* Forward Voltage vs. Ambient Temperature (I-F vs. Ta)
* Radiation Diagram
* Spectral Distribution.

3. ESD (Electrostatic Discharge) Precautions – Crucial for Handling

· Sensitivity: The LED is *highly* sensitive to ESD because the chip material (Al2O3 - Sapphire) is an insulator.
· Damage from ESD: ESD can cause damage that results in:
* Reduced light output.
* Voltage drops (Vf).
* Complete failure (no light).
· ESD Prevention Methods:
* Humidity Control: Increased humidity (80% relative humidity) reduces static buildup.
* ESD Protective Materials: Using antistatic mats, wrist straps, and protective clothing.
* Proper Handling Techniques: Avoiding contact with potentially static-generating surfaces.
* Table of ESD risks at specific relative humidity ranges.
· Note: Follow all ESD precautions to minimize the risk of damage.

4. Key Takeaways and Critical Points

· Color Consistency: The LED's color is precisely defined by its CIE coordinates.
· Grade Matters: The LED's grade (1, 2, or 3) dictates its performance characteristics (Vf, Iv) and must be considered for application requirements.
· ESD is Paramount: The most important aspect of handling the SW3318E-G LED is stringent adherence to ESD prevention measures. Failure to do so can cause irreparable damage.
· Application Scope: The use is limited with potential liabilities if not consulted with the manufacturer.