Professional IC Distribution & Technical Solutions

Manufacturer: LED BRIGHT

Part Number: BA-4X7UV-A-X1-LC3.3

#### Specifications:

• Type: LED (Ultraviolet)
• Wavelength: 395-400 nm (UV-A range)
• Forward Voltage (Vf): 3.2V - 3.4V
• Forward Current (If): 20mA (typical)
• Luminous Intensity: 400-500 mcd (millicandela)
• Viewing Angle: 120° (wide angle)
• Package: 4x7 mm rectangular surface-mount (SMD)
• Material: Epoxy resin
• Operating Temperature: -30°C to +85°C
• Storage Temperature: -40°C to +100°C

#### Descriptions:

The BA-4X7UV-A-X1-LC3.3 is a compact, high-efficiency UV-A LED designed for applications requiring ultraviolet illumination. Its 4x7 mm SMD package ensures easy integration into PCB designs, while the wide viewing angle provides uniform light distribution.

#### Features:

• High UV Output: Efficient emission in the 395-400 nm range.
• Low Power Consumption: Operates at standard 3.3V logic levels.
• Wide Viewing Angle: 120° for broad coverage.
• Compact SMD Design: Suitable for space-constrained applications.
• Reliable Performance: Stable operation across industrial temperature ranges.
• RoHS Compliant: Environmentally friendly construction.

This LED is commonly used in UV curing, counterfeit detection, and fluorescence inspection systems.

# BA-4X7UV-A-X1-LC3.3: Technical Analysis and Implementation Guide

## Practical Application Scenarios

The BA-4X7UV-A-X1-LC3.3 is a high-performance UV LED component manufactured by LED BRIGHT, designed for specialized applications requiring precise ultraviolet light emission. Its primary use cases include:

1. Medical Sterilization Systems

The component’s 3.3V operating voltage and UV output make it suitable for compact sterilization devices, such as portable UV sanitizers and surface disinfection tools. Its efficiency in emitting UV-C wavelengths ensures effective microbial inactivation.

2. Forensic and Counterfeit Detection

In forensic analysis, the LED’s stable UV output aids in detecting trace evidence (e.g., bodily fluids or security markings). Its low power consumption allows integration into handheld devices for field use.

3. Industrial Curing Systems

The BA-4X7UV-A-X1-LC3.3 is used in UV curing processes for adhesives, coatings, and inks. Its consistent irradiance ensures uniform curing, critical in automotive and electronics manufacturing.

4. Environmental Monitoring

Deployed in air and water quality sensors, the LED assists in detecting pollutants by exciting fluorescent markers. Its robust design ensures reliability in harsh environments.

## Common Design-Phase Pitfalls and Avoidance Strategies

1. Thermal Management Issues

*Pitfall:* UV LEDs generate significant heat, which can degrade performance or reduce lifespan if not managed.

*Solution:* Implement active cooling (e.g., heatsinks or thermal pads) and adhere to the manufacturer’s recommended junction temperature limits.

2. Electrical Overstress

*Pitfall:* Exceeding the 3.3V forward voltage or maximum current rating can cause premature failure.

*Solution:* Use constant-current drivers and incorporate overvoltage protection circuits to ensure stable operation.

3. Optical Misalignment

*Pitfall:* Improper lens or reflector alignment reduces UV output efficiency.

*Solution:* Design fixtures with precise mechanical tolerances and verify alignment during prototyping.

4. Material Degradation

*Pitfall:* Prolonged UV exposure can degrade nearby materials (e.g., plastics or adhesives).

*Solution:* Select UV-resistant materials for enclosures and optical components.

## Key Technical Considerations for Implementation

1. Drive Circuitry

A constant-current driver is essential to maintain stable output. Ensure compatibility with the LED’s 3.3V forward voltage and verify ripple current specifications.

2. Optical Design

Use quartz or UV-grade glass lenses to minimize absorption losses. Consider beam angle requirements for the target application.

3. Environmental Robustness

For outdoor or industrial use, ensure the component is protected against moisture and dust (IP-rated enclosures may be necessary).

4. Regulatory Compliance

Verify adherence to safety standards (e.g., IEC 62471 for UV hazard classification) and ensure proper shielding to protect users from UV exposure.

By addressing these factors, designers can optimize the BA-4X7UV-A-X1-LC3.3’s performance and reliability in diverse applications.