The PT2559B/L2-F is a side-view, radial, 3-lead phototransistor from Everlight Electronics Co Ltd. It is designed to detect infrared light at a wavelength of 940nm. The PT2559B/L2-F has a high current transfer ratio (CTR) of 100%, making it suitable for a variety of applications, including:

• Optical encoders
• Proximity sensors
• Object detection
• Remote controls
• Industrial automation

The PT2559B/L2-F is a small and lightweight component, measuring just 5.0mm x 3.2mm x 2.9mm. It is also highly reliable, with a lifespan of over 100,000 hours.

Features and Benefits

• High CTR of 100%
• Wide operating temperature range of -25°C to +85°C
• Small and lightweight package
• High reliability

Applications

• Optical encoders
• Proximity sensors
• Object detection
• Remote controls
• Industrial automation

Example Applications

• Optical Encoders: Optical encoders are used to measure the rotation of a shaft or spindle. The PT2559B/L2-F can be used in optical encoders to detect the movement of a slotted disk or other encoded pattern.
• Proximity Sensors: Proximity sensors are used to detect the presence of an object within a certain range. The PT2559B/L2-F can be used in proximity sensors to detect the presence of a person, machine part, or other object.
• Object Detection: Object detection systems use sensors to detect the presence of objects in a scene. The PT2559B/L2-F can be used in object detection systems to detect the presence of people, vehicles, or other objects.
• Remote Controls: Remote controls use infrared light to transmit commands to electronic devices. The PT2559B/L2-F can be used in remote controls to receive the infrared signals from the remote control and convert them into electrical signals that can be understood by the electronic device.
• Industrial Automation: Industrial automation systems use sensors and actuators to control machines and processes. The PT2559B/L2-F can be used in industrial automation systems to detect the presence of objects, measure the position of objects, or trigger other events.

Conclusion

The PT2559B/L2-F is a versatile and reliable phototransistor that is suitable for a wide variety of applications. It is a good choice for applications where high sensitivity, wide operating temperature range, and small size and weight are required.