Overview
The SFH4043-Z is a premium infrared LED emitter designed for demanding applications requiring consistent performance. Manufactured using GaAs technology, it emits at 850nm wavelength, making it ideal for night vision systems, industrial automation, and medical diagnostic equipment. As a surface-mount device, the SFH4043-Z offers excellent thermal management and reliability. Its compact design allows for integration into space-constrained applications while maintaining high radiant output. The component meets industry standards for infrared emitters and is widely used in professional-grade equipment.
Structure and Working Principle
The SFH4043-Z features a hermetically sealed package with a GaAs chip mounted on a lead frame for optimal heat dissipation. The emitter utilizes semiconductor technology where electron-hole recombination produces photons in the infrared spectrum when current flows through the device. The component's optical system is designed to provide a narrow emission angle (typically 20°), concentrating the infrared output for efficient target illumination. This directional characteristic makes it particularly effective for distance sensing applications where focused irradiation is required.
Key Features
The SFH4043-Z stands out for its high radiant intensity, typically reaching 100mW/sr at 100mA drive current. This performance is maintained across a wide operating temperature range (-40°C to +110°C), ensuring reliability in harsh environments. Additional notable features include fast response time (<100ns), low forward voltage, and excellent wavelength stability. The device's robust construction provides resistance to mechanical stress and environmental factors, contributing to long operational life in continuous-use scenarios.
Application Areas
Industrial automation represents a primary application area, where the SFH4043-Z is used in object detection, position sensing, and quality control systems. Its consistent output makes it valuable for machine vision applications requiring uniform illumination. In the medical field, the emitter finds use in pulse oximeters, breath analyzers, and other diagnostic equipment. Other applications include optical data transmission, security systems, and scientific instrumentation where precise infrared illumination is required.
Maintenance and Precautions
Proper handling is essential for maintaining the SFH4043-Z's performance. ESD precautions should always be observed during installation and handling. The device should be stored in anti-static packaging when not in use. Operational considerations include adhering to specified current limits (typically 100mA continuous) and implementing proper heat sinking for high-duty-cycle applications. Cleaning should be performed with appropriate solvents to avoid damaging the optical surface, and mechanical stress on the package should be minimized.
B2B Procurement Guide
When sourcing SFH4043-Z components, verify the manufacturer's certification and request batch testing data for critical parameters. Lead times for industrial quantities typically range from 4-8 weeks, so advance planning is recommended. Consider purchasing from authorized distributors to ensure genuine components, especially given the prevalence of counterfeit infrared devices in the market. For large-volume purchases (1,000+ units), negotiate pricing based on delivery schedule and payment terms. Quality control should include verification of radiant intensity and spectral characteristics.