The ELD-436HDB/S358 is a high-brightness LED component manufactured by EVERLIGHT. Below are its key specifications, descriptions, and features:
Specifications:
- Color: Red
- Wavelength: 625nm (typical)
- Luminous Intensity: 3000mcd (minimum) at 20mA
- Forward Voltage (Vf): 2.0V (typical)
- Viewing Angle: 30°
- Package Type: 5mm Round LED (T-1 3/4)
- Lead Material: Copper
- Operating Temperature Range: -30°C to +85°C
- Storage Temperature Range: -40°C to +100°C
Descriptions:
- High-Brightness LED: Designed for applications requiring strong visibility.
- Standard 5mm Package: Compact and widely compatible with PCB designs.
- Low Power Consumption: Efficient performance at 20mA drive current.
- RoHS Compliant: Meets environmental safety standards.
Features:
- High Luminous Output: Ensures bright illumination.
- Narrow Viewing Angle (30°): Focused light emission for directed applications.
- Long Lifespan: Durable construction for extended use.
- Lead-Free & Halogen-Free: Environmentally friendly.
This LED is commonly used in indicator lights, automotive lighting, signage, and electronic displays.
*(Note: Always refer to the official EVERLIGHT datasheet for detailed technical parameters.)*
# ELD-436HDB/S358: Technical Analysis and Implementation Guide
## Practical Application Scenarios
The ELD-436HDB/S358, manufactured by EVERLIGHT, is a high-brightness LED designed for demanding applications requiring consistent luminosity and reliability. Key use cases include:
1. Automotive Lighting:
- Employed in daytime running lights (DRLs), brake lights, and interior illumination due to its high luminous intensity (typically >1000 mcd) and wide operating temperature range (-40°C to +85°C).
- Ensures compliance with automotive standards such as AEC-Q101 for component reliability.
2. Industrial Indicators:
- Used in machinery status panels and emergency lighting systems where visibility under harsh conditions (dust, vibration, or moisture) is critical.
- The LED’s robust construction and resistance to environmental stressors make it suitable for factory automation.
3. Consumer Electronics:
- Integrated into appliances and portable devices for backlighting or status indicators, leveraging its low power consumption (forward voltage: ~2.1V) and compact form factor.
4. Outdoor Displays:
- Ideal for signage and traffic signals due to its high efficiency and long lifespan (>50,000 hours), reducing maintenance costs.
## Common Design-Phase Pitfalls and Avoidance Strategies
1. Thermal Management Issues:
- *Pitfall*: Inadequate heat dissipation can degrade performance and lifespan.
- *Solution*: Use PCB designs with thermal vias and heatsinks, ensuring junction temperatures remain within datasheet limits.
2. Electrical Overstress:
- *Pitfall*: Exceeding maximum forward current (e.g., 30mA for ELD-436HDB/S358) causes premature failure.
- *Solution*: Implement current-limiting resistors or constant-current drivers tailored to the LED’s specifications.
3. Optical Misalignment:
- *Pitfall*: Improper lens or reflector design leads to uneven light distribution.
- *Solution*: Simulate beam patterns using optical software and validate with prototyping.
4. Environmental Incompatibility:
- *Pitfall*: Exposure to UV or chemicals may damage the epoxy lens.
- *Solution*: Select variants with protective coatings or housings for harsh environments.
## Key Technical Considerations for Implementation
1. Electrical Parameters:
- Verify forward voltage (Vf) and current (If) compatibility with the driver circuit.
- Account for voltage drops in series configurations.
2. Mechanical Integration:
- Ensure proper alignment with diffusers or lenses to achieve desired illumination angles (e.g., 120° viewing angle for ELD-436HDB/S358).
3. Reliability Testing:
- Conduct accelerated life testing (e.g., 85°C/85% RH) to validate performance under operational extremes.
4. Regulatory Compliance:
- Confirm adherence to RoHS and REACH directives for environmental safety.
By addressing these factors, designers can optimize the ELD-436HDB/S358’s performance while mitigating risks in critical applications.