The SFH4255 is a silicon PIN photodiode designed and manufactured by OSRAM Opto Semiconductors. It is optimized for the detection of infrared (IR) radiation. This photodiode is known for its high sensitivity and is commonly used in a variety of applications that require reliable IR detection.

Applications

• Remote Control Systems: Frequently used in remote controls for TVs, DVD players, and other electronic devices to detect IR signals transmitted by the remote.
• Light Barriers and Security Systems: Employed in security systems and industrial automation to detect interruptions in a light beam, triggering an alarm or stopping a process.
• Proximity Sensors: Utilized in proximity detection applications, such as automatic doors, touchless switches, and object detection systems.
• Optical Encoders: Integrated into optical encoders for precise position and motion control in various industrial and robotic applications.
• Light Meters: Used in devices to measure the intensity of light, particularly in photographic and scientific equipment.

Features

• High Sensitivity: The photodiode exhibits excellent sensitivity to infrared radiation, enabling accurate detection of even weak IR signals.
• Fast Switching Speed: Designed for rapid response times, allowing for high-speed data transmission and detection in dynamic applications.
• Wide Operating Temperature Range: Functions reliably across a broad temperature range, ensuring consistent performance in various environmental conditions.
• Compact Size: The small form factor allows for easy integration into space-constrained applications and miniaturized devices.
• RoHS Compliant: Manufactured in accordance with RoHS standards, minimizing the environmental impact and ensuring compliance with environmental regulations.

Benefits

• Precise Detection: The high sensitivity ensures accurate and reliable detection of IR signals, reducing false triggers and improving overall system performance.
• Improved System Response: The fast switching speed enables quick reaction times, enhancing the responsiveness of the system and allowing for real-time data processing.
• Versatile Applications: Suitable for a wide range of applications, providing flexibility in design and implementation for various sensing and detection needs.
• Long-Term Reliability: The robust construction and high-quality materials ensure long-term durability and consistent performance, reducing maintenance and replacement costs.
• Environmentally Friendly: Compliance with RoHS standards minimizes the environmental impact, supporting sustainability and responsible manufacturing practices.

Technical Specifications

The SFH4255 is sensitive to IR radiation, typically in the 850-950 nm range. It is designed to be operated in reverse bias to improve its response time and reduce capacitance. Detailed electrical and optical characteristics, such as responsivity, dark current, and junction capacitance, are available in the OSRAM datasheet for the SFH4255. The datasheet also includes information on the package dimensions and other relevant parameters.