Professional IC Distribution & Technical Solutions

The ELF-416UGWB is a surface-mount LED component manufactured by EVERLIGHT. Below are its specifications, descriptions, and features:

Specifications:

• Manufacturer: EVERLIGHT
• Part Number: ELF-416UGWB
• LED Color: White
• Viewing Angle: 120°
• Forward Voltage (Typical): 3.2V
• Forward Current (Max): 20mA
• Luminous Intensity (Min): 400mcd
• Package Type: SMD (Surface Mount Device)
• Dimensions (L x W x H): 1.6mm x 0.8mm x 0.6mm
• Operating Temperature Range: -40°C to +85°C

Descriptions:

• The ELF-416UGWB is a compact, high-brightness white LED designed for surface-mount applications.
• It is suitable for backlighting, indicator lights, and general illumination in consumer electronics and automotive applications.

Features:

• High Brightness: Provides strong luminous intensity for its size.
• Wide Viewing Angle: 120° ensures broad light dispersion.
• Compact SMD Package: Small footprint for space-constrained designs.
• Reliable Performance: Stable operation across a wide temperature range.
• RoHS Compliant: Meets environmental safety standards.

This information is based on EVERLIGHT's official datasheet for the ELF-416UGWB.

# ELF-416UGWB: Technical Analysis and Implementation Considerations

## Practical Application Scenarios

The ELF-416UGWB, manufactured by EVERLIGHT, is a high-performance surface-mount LED designed for applications requiring precise illumination with low power consumption. Its compact form factor and robust performance make it suitable for:

1. Automotive Lighting: Used in dashboard backlighting, interior ambient lighting, and status indicators due to its high brightness (typically 1200–1500 mcd) and wide viewing angle (120°). The component’s ability to operate across a broad temperature range (-40°C to +85°C) ensures reliability in harsh environments.

2. Consumer Electronics: Integrated into devices such as smartwatches and wearables for notification LEDs, where energy efficiency and minimal footprint are critical. The ELF-416UGWB’s low forward voltage (2.8V–3.4V) aligns with battery-powered designs.

3. Industrial Control Systems: Employed in panel indicators and machinery status displays, leveraging its high electrostatic discharge (ESD) protection (up to 8kV) and long operational lifespan (>50,000 hours).

4. Medical Devices: Utilized in diagnostic equipment and portable medical tools where consistent luminance and low electromagnetic interference (EMI) are essential.

## Common Design-Phase Pitfalls and Avoidance Strategies

1. Thermal Management Issues:

• Pitfall: Inadequate heat dissipation can degrade LED performance and lifespan.
• Solution: Implement proper PCB thermal vias and copper pours. Ensure the operating current remains within the datasheet specifications (typically 20mA).

2. Inconsistent Luminosity:

• Pitfall: Variations in forward voltage or current can cause brightness discrepancies.
• Solution: Use constant-current drivers instead of voltage-driven circuits. Match LEDs from the same production batch for uniform performance.

3. ESD Sensitivity:

• Pitfall: Despite built-in ESD protection, improper handling during assembly can damage the LED.
• Solution: Follow IPC/JEDEC J-STD-020 guidelines for moisture sensitivity and ESD-safe soldering practices.

4. Optical Misalignment:

• Pitfall: Incorrect placement or lens design may lead to uneven light distribution.
• Solution: Simulate optical paths using tools like LightTools or TracePro during PCB layout. Verify alignment with prototyping.

## Key Technical Considerations for Implementation

1. Electrical Parameters:

• Ensure the driver circuit matches the LED’s forward current (20mA recommended) to prevent overdriving.
• Account for voltage drops in series configurations to maintain consistent brightness.

2. Mechanical Integration:

• The ELF-416UGWB’s 1.6mm x 0.8mm footprint requires precise pick-and-place assembly. Verify stencil design for solder paste application.

3. Environmental Compliance:

• Confirm adherence to RoHS and REACH standards for end-product certifications.

By addressing these factors, designers can optimize the ELF-416UGWB’s performance across diverse applications while mitigating common risks.