The PT91-21B/TR9 is an infrared (IR) emitting diode from Everlight Electronics. This component is designed to emit infrared light at a specific wavelength, typically used in remote control systems, light barriers, and other applications requiring IR communication or detection.

Applications

• Remote Control Systems: Used as the IR light source in remote controls for televisions, DVD players, and other electronic devices.
• Light Barriers: Employed in light barrier systems for object detection in industrial automation and security systems.
• IR Communication: Integrated into devices for short-range IR communication, such as data transfer between devices.
• Touch Panels: Can be used as part of an IR touch panel system.
• Proximity Sensors: Used in proximity sensors to detect the presence of nearby objects.

Features

• High Radiant Intensity: Provides high radiant intensity for efficient IR signal transmission.
• Peak Wavelength: Emits IR light at a specific peak wavelength, typically around 940nm, which is ideal for many IR receiver devices.
• Narrow Viewing Angle: Features a narrow viewing angle, allowing for focused and directional IR signal transmission.
• Fast Switching Speed: Offers fast switching speed, enabling high-speed data transmission.
• RoHS Compliant: Compliant with RoHS standards, ensuring environmental friendliness.

Benefits

• Long-Range Communication: Enables long-range communication in remote control systems due to its high radiant intensity.
• Reliable Object Detection: Provides reliable object detection in light barrier systems with its focused IR beam.
• Efficient Data Transmission: Allows for efficient data transmission in IR communication applications with its fast switching speed.
• Compact Design: Enables compact designs due to its small package size.
• Energy Efficient: Low power consumption makes it energy efficient.

Specifications

The PT91-21B/TR9 has a peak emission wavelength of 940 nm. The forward voltage is typically around 1.2V to 1.4V at a forward current of 50mA. The viewing angle is approximately 20 degrees. The operating temperature range is typically -25°C to +85°C.