Part Number: SS345SURWA/S530-A3/290
Manufacturer: EVERLIGHT
Specifications:
- Type: SMD LED
- Color: Red
- Wavelength: 620-625nm (typical)
- Luminous Intensity: 290mcd (minimum at 20mA)
- Forward Voltage: 1.8-2.2V (typical at 20mA)
- Reverse Current: ≤10μA (at 5V)
- Viewing Angle: 120°
- Package Type: PLCC-2 (Surface Mount)
- Dimensions: 3.2mm x 2.8mm x 1.9mm
- Operating Temperature Range: -40°C to +85°C
- Storage Temperature Range: -40°C to +100°C
Descriptions:
The SS345SURWA/S530-A3/290 is a high-brightness red LED designed for surface-mount applications. It features a wide viewing angle and is suitable for backlighting, indicators, and general lighting purposes.
Features:
- High luminous intensity
- Low power consumption
- Wide viewing angle (120°)
- Compact PLCC-2 package
- RoHS compliant
- Lead-free and halogen-free
This LED is ideal for applications requiring reliable performance in a small form factor.
# Technical Analysis of EVERLIGHT SS345SURWA/S530-A3/290
## 1. Practical Application Scenarios
The EVERLIGHT SS345SURWA/S530-A3/290 is a high-performance optoelectronic component, typically used in sensing and switching applications. Key use cases include:
Industrial Automation
- Position Sensing: Integrated into assembly lines to detect object presence or alignment via infrared (IR) reflection.
- Safety Interlocks: Ensures machinery operates only when protective barriers are closed, reducing workplace hazards.
Consumer Electronics
- Proximity Detection: Used in smartphones and tablets to disable touchscreens during calls.
- Ambient Light Sensing: Automatically adjusts display brightness based on environmental lighting conditions.
Automotive Systems
- Gear Position Sensing: Monects transmission state in automatic vehicles.
- Liquid Level Detection: Confirms fuel or brake fluid levels via IR beam interruption.
These applications benefit from the component’s high sensitivity, low power consumption, and robust packaging.
## 2. Common Design-Phase Pitfalls and Avoidance Strategies
Optical Misalignment
- Pitfall: Improper alignment between emitter and detector reduces signal integrity.
- Solution: Use precision mounting fixtures and verify alignment during prototyping with an oscilloscope.
Ambient Light Interference
- Pitfall: External light sources (e.g., sunlight) may trigger false positives.
- Solution: Implement modulated IR signals with synchronous detection to filter noise.
Thermal Drift
- Pitfall: Temperature fluctuations alter output characteristics.
- Solution: Select components with specified operating ranges (-40°C to +85°C) and incorporate thermal compensation circuits.
Electrical Overstress
- Pitfall: Voltage spikes damage the phototransistor or LED emitter.
- Solution: Add transient voltage suppressors (TVS) and current-limiting resistors.
## 3. Key Technical Considerations for Implementation
Optical Characteristics
- Wavelength: 940 nm IR emission ensures compatibility with standard phototransistors.
- Sensitivity: Verify detector response time (<10 µs) for high-speed applications.
Electrical Parameters
- Forward Current (IF): Do not exceed 50 mA to prevent LED degradation.
- Collector-Emitter Voltage (VCEO): Ensure phototransistor ratings match system voltage (typically 5V–24V).
Mechanical Integration
- Package: Surface-mount (SMD) design requires reflow soldering; avoid mechanical stress during assembly.
- Optical Path: Maintain a clear, unobstructed line-of-sight between emitter and detector.
By addressing these factors, designers can optimize reliability and performance in end-use environments.