Professional IC Distribution & Technical Solutions

The ELS-816USRWA/S530-A3 is an infrared (IR) emitter manufactured by EVERLIGHT. Below are its key specifications, descriptions, and features:

Specifications:

• Wavelength (Peak): 940nm
• Forward Current (IF): 100mA
• Forward Voltage (VF): 1.5V (typical)
• Radiant Intensity (Min): 35mW/sr @ 100mA
• Viewing Angle (2θ½): ±20°
• Operating Temperature Range: -40°C to +85°C
• Package Type: 5mm Round LED
• Lens Appearance: Water Clear
• Lead Material: Copper

Descriptions:

• High-efficiency 940nm infrared emitter designed for remote control and sensing applications.
• Features a 5mm round package with a water-clear lens for optimal IR transmission.
• Suitable for automotive, industrial, and consumer electronics applications.

Features:

• High radiant intensity for reliable performance.
• Low forward voltage for energy efficiency.
• Wide operating temperature range for harsh environments.
• RoHS compliant and lead-free.

This IR emitter is commonly used in remote controls, security systems, and optical sensors.

(Note: Always refer to the official datasheet for detailed technical parameters and application guidelines.)

# Technical Analysis of EVERLIGHT’s ELS-816USRWA/S530-A3 LED Component

## 1. Practical Application Scenarios

The ELS-816USRWA/S530-A3 is a high-brightness, surface-mount LED designed for applications requiring reliable illumination with precise color consistency. Key use cases include:

• Automotive Lighting: Used in dashboard backlighting, interior ambient lighting, and status indicators due to its high luminous intensity and stable performance under varying temperatures.
• Consumer Electronics: Integrated into LCD backlighting for displays, keypad illumination, and wearable devices, benefiting from its compact form factor and low power consumption.
• Industrial Indicators: Employed in control panels and machinery status lights where long-term reliability and visibility under harsh conditions are critical.
• Medical Devices: Suitable for diagnostic equipment and handheld instruments due to its low electromagnetic interference (EMI) and consistent output.

The LED’s wide operating temperature range (-40°C to +85°C) and high electrostatic discharge (ESD) protection (up to 8kV) make it ideal for environments with electrical noise or thermal fluctuations.

## 2. Common Design-Phase Pitfalls and Avoidance Strategies

Pitfall 1: Thermal Management Issues

Excessive current or inadequate heat dissipation can degrade LED performance.

• Solution: Implement proper PCB thermal vias, use heat sinks, and adhere to the recommended forward current (If) specified in the datasheet.

Pitfall 2: Incorrect Forward Voltage Matching

Mismatched driver voltage can lead to uneven brightness or premature failure.

• Solution: Verify the forward voltage (Vf) of the LED batch and design driver circuits with appropriate current-limiting resistors or constant-current drivers.

Pitfall 3: Poor Optical Alignment

Misaligned LEDs in backlighting or indicator applications cause uneven illumination.

• Solution: Use precision pick-and-place machines during assembly and verify alignment with optical testing.

Pitfall 4: ESD Damage During Handling

Static discharge can degrade LED performance without visible damage.

• Solution: Follow ESD-safe handling procedures, including grounded workstations and anti-static packaging.

## 3. Key Technical Considerations for Implementation

• Electrical Parameters: Operate within the specified forward current (typically 20mA) to ensure longevity. Exceeding this value reduces lifespan.
• Optical Characteristics: Verify dominant wavelength and viewing angle compatibility with the application (e.g., narrow-angle for indicators vs. wide-angle for backlighting).
• Mechanical Constraints: Ensure PCB pad layout matches the LED’s footprint to avoid soldering defects.
• Environmental Resilience: Confirm IP rating (if applicable) for moisture or dust resistance in outdoor or industrial settings.

By addressing these factors, designers can maximize the performance and reliability of the ELS-816USRWA/S530-A3 in their applications.