5mm Infrared Emitter and IR Receiver LEDS Diode (10pcs)

The Infrared (IR) emitter and receiver diodes are typically sold in matched pairs or kits, commonly operating at a 940nm wavelength for applications like remote controls, obstacle detection, and security sensors. A common configuration for hobbyists is a 10-piece set containing 5 emitters and 5 receivers.

Component Specifications:

These 5mm diodes generally share the following technical characteristics:

• Wavelength: 940nm is the industry standard for most IR remote and sensing systems.
• Forward Voltage: Typically ranges between 1.2V and 1.5V.
• Operating Distance: Most standard pairs offer a transmission and receiving range of approximately 7 to 8 meters.
• Appearance: Emitters usually have a water-clear lens, while receivers (photodiodes) often feature a black or dark blue lens to filter out visible light and reduce false triggers from ambient sources.

Applications:

• Remote controls for TVs, audio equipment, and other consumer electronics
• Wireless data communication
• Infrared signaling and sensing
• Automation systems
• DIY electronics projects
• Robotics

Usage Tips:

• Polarity: Like standard LEDs, the longer lead is the anode (positive) and the shorter lead is the cathode (negative).
• Circuit Protection: Always use a current-limiting resistor (e.g., 120 ohms for a 5V supply) to prevent burning out the emitter LED.
• Testing: Since IR light is invisible to the human eye, you can check if an emitter is working by looking at it through a smartphone camera, which can detect the infrared glow.