The SFH3211 is a silicon NPN phototransistor designed for proximity sensing and object detection in various applications. Manufactured by OSRAM Opto Semiconductors, this device offers high sensitivity to infrared (IR) radiation and is particularly well-suited for use in reflective sensors. Its design focuses on efficient light collection and conversion, making it a reliable component for detection systems.

Applications

• Proximity Sensors: Used in devices requiring proximity detection, such as automatic faucets, hand dryers, and touchless switches.
• Object Detection: Employed in industrial automation and robotics to detect the presence or absence of objects.
• Reflective Sensors: Integrated into reflective sensors for measuring distance or detecting surface characteristics.
• Gaming Consoles and Interactive Devices: Used for gesture recognition and motion sensing.
• Mobile Devices: Incorporated in features like screen auto-dimming based on proximity to the user.

Features

• High Sensitivity to Infrared Radiation: Ensures reliable detection of IR signals even in low-light conditions.
• NPN Silicon Phototransistor: Provides stable and consistent performance over a wide range of operating conditions.
• Compact Package: Facilitates easy integration into space-constrained applications.
• Optimized for Reflective Sensing: Designed to efficiently collect reflected light.
• Fast Switching Speed: Allows for quick response to changes in IR radiation, enabling real-time detection.

Benefits

• Enhanced System Reliability: High sensitivity and optimized design ensure consistent and dependable detection, reducing false triggers.
• Simplified Design Integration: Compact size and industry-standard pinout simplify the design process, reducing development time.
• Cost-Effective Solution: Provides a balance of performance and affordability, making it suitable for a wide range of applications.
• Improved User Experience: Enables intuitive and responsive interaction in proximity-based applications.
• Increased Efficiency: Fast response time and accurate detection improve the efficiency of automated systems and processes.

Technical Specifications

The SFH3211 typically operates with a collector-emitter voltage (VCE) of up to 30V and a collector current (IC) of up to 50mA. Its peak spectral sensitivity aligns with common IR LEDs. The package is designed to enhance the collection of reflected IR light. It is also compliant with RoHS environmental standards.