Professional IC Distribution & Technical Solutions

The EL-1100GD is a surface-mount LED component manufactured by EVERLIGHT. Below are the factual specifications, descriptions, and features of this part:

Specifications:

• Color: Green
• Lens Appearance: Water Clear
• Forward Voltage (Vf): 2.1V (Typical)
• Forward Current (If): 20mA
• Luminous Intensity (Iv): 20mcd (Minimum)
• Viewing Angle: 120°
• Wavelength (λp): 565nm (Typical)
• Reverse Voltage (Vr): 5V
• Power Dissipation (Pd): 70mW
• Operating Temperature Range: -40°C to +85°C
• Storage Temperature Range: -40°C to +100°C

Descriptions:

• Package Type: 0805 (2.0mm x 1.25mm)
• Mounting Type: Surface Mount (SMD)
• Lead-Free & RoHS Compliant

Features:

• High brightness with wide viewing angle
• Low power consumption
• Ideal for backlighting, indicators, and display applications
• Compatible with reflow soldering processes

This information is based on EVERLIGHT's official datasheet for the EL-1100GD LED.

# EL-1100GD: Technical Analysis and Implementation Considerations

## Practical Application Scenarios

The EVERLIGHT EL-1100GD is a high-performance optoelectronic component designed for precision sensing and signaling applications. Its primary use cases include:

1. Industrial Automation: The EL-1100GD is widely deployed in proximity sensors and object detection systems due to its high sensitivity and fast response time. In conveyor belt systems, it ensures accurate object counting and positioning, reducing errors in automated sorting processes.

2. Medical Devices: The component’s low noise and stable output make it suitable for medical equipment such as pulse oximeters and fluid level detectors. Its reliability in low-light conditions ensures consistent performance in critical healthcare environments.

3. Consumer Electronics: Integrated into touchless interfaces (e.g., gesture-controlled devices), the EL-1100GD enhances user experience by providing reliable infrared detection. Its compact form factor allows seamless integration into space-constrained designs.

4. Automotive Systems: Used in rain sensors and cabin occupancy detection, the EL-1100GD operates effectively across a wide temperature range (-40°C to +85°C), meeting automotive-grade durability requirements.

## Common Design-Phase Pitfalls and Avoidance Strategies

1. Insufficient Noise Immunity:

• *Pitfall*: Electrical noise from nearby components can degrade signal integrity.
• *Solution*: Implement proper shielding and grounding techniques. Use low-ESR decoupling capacitors near the EL-1100GD’s power pins.

2. Optical Crosstalk:

• *Pitfall*: Unintended light leakage between emitter and detector pairs causes false triggers.
• *Solution*: Design physical barriers (e.g., opaque partitions) between emitter and detector. Opt for modular housing with dedicated light channels.

3. Thermal Mismanagement:

• *Pitfall*: Excessive heat in high-duty-cycle applications reduces component lifespan.
• *Solution*: Ensure adequate airflow or heat sinking. Derate operating current if ambient temperatures exceed 70°C.

4. Inconsistent Output Calibration:

• *Pitfall*: Variations in ambient light lead to erratic behavior.
• *Solution*: Incorporate dynamic threshold adjustment algorithms or use the EL-1100GD in conjunction with ambient light sensors.

## Key Technical Considerations for Implementation

1. Electrical Parameters:

• Forward current (IF) should not exceed 50 mA to prevent premature degradation.
• Reverse voltage (VR) must stay below 5 V to avoid damage.

2. Optical Alignment:

• Precise mechanical alignment between emitter and detector is critical. Use jigs or alignment marks during PCB assembly.

3. Environmental Robustness:

• For outdoor applications, ensure IP-rated sealing to protect against moisture and dust ingress.

4. Signal Conditioning:

• Pair the EL-1100GD with a transimpedance amplifier to optimize weak signal detection in low-light scenarios.

By addressing these factors, designers can fully leverage the EL-1100GD’s capabilities while mitigating operational risks.