The SFH4244 is a silicon PIN photodiode designed by OSRAM Opto Semiconductors for precise detection of infrared (IR) radiation. This device is optimized for applications that require high sensitivity and a narrow viewing angle. Its robust design and reliable performance make it suitable for use in various industrial, consumer, and medical applications.

Applications

• Remote Control Systems: Used in remote controls for TVs, DVD players, and other consumer electronics to detect IR signals with high precision.
• Light Barriers and Security Systems: Employed in security systems and industrial automation for detecting interruptions in a light beam.
• Proximity Sensors: Utilized in proximity detection applications, such as automatic doors and gesture recognition systems.
• Optical Encoders: Integrated into optical encoders for precise position and motion control.
• Medical Devices: Used in medical equipment for non-invasive monitoring and diagnostics.

Features

• High Sensitivity: The photodiode exhibits excellent sensitivity to infrared radiation, ensuring accurate detection of weak signals.
• Narrow Viewing Angle: The narrow viewing angle minimizes the detection of stray light, improving the accuracy of the measurement.
• Fast Switching Speed: Designed for rapid response times, enabling high-speed data transmission and detection.
• Compact Size: The small form factor allows for easy integration into space-constrained applications.
• RoHS Compliant: Manufactured in accordance with RoHS standards, minimizing the environmental impact of the device.

Benefits

• Precise Detection: The high sensitivity and narrow viewing angle ensure accurate and reliable detection of IR signals, reducing false triggers and improving system performance.
• Improved System Response: The fast switching speed allows for quick reaction times, enhancing the responsiveness of the overall system.
• Versatile Applications: Suitable for a wide range of applications, providing flexibility in design and implementation.
• Long-Term Reliability: The robust construction and high-quality materials ensure long-term durability and consistent performance.
• Environmentally Friendly: Compliance with RoHS standards minimizes the environmental impact of the device, aligning with sustainability goals.

Technical Specifications

The SFH4244 is particularly sensitive to infrared radiation in the range of 850-950 nm, which is the typical wavelength for IR LEDs used in remote control applications. It is designed to be operated in reverse bias. Its specific features include a defined viewing angle, typically around ±12 degrees. The datasheet contains detailed electrical and optical characteristics, such as responsivity, dark current, and junction capacitance.