The 5mm IR Infrared Receiver LED is a compact, high-performance photodiode designed to detect infrared light signals, typically in the 940nm wavelength range. It is commonly used in applications such as remote control systems, IR data transmission, and object detection. When paired with an infrared transmitter LED, this receiver is ideal for creating point-to-point communication or sensing setups for your DIY electronics, robotics, and automation projects.

The IR receiver can detect modulated infrared light, converting the received signal into a digital output (HIGH or LOW), making it compatible with microcontrollers like Arduino, Raspberry Pi, or ESP32 for further processing and triggering actions.

How It Works:
The infrared receiver works by detecting the modulated infrared light emitted by an IR LED. When the receiver detects the infrared light (usually modulated at specific frequencies), it generates a corresponding electrical signal that can be read by a microcontroller or used to trigger other components in your circuit.

When no infrared signal is detected, the output is typically LOW. When infrared light is received, the output becomes HIGH. This digital output makes it easy to interface with logic circuits, microcontrollers, or other digital devices.

Specifications:

• Type: 5mm IR Photodiode Receiver

• Peak Wavelength: 940nm (compatible with common IR LEDs)

• Output Type: Digital (HIGH when detecting infrared light, LOW otherwise)

• Voltage: 5V (typical for compatibility with microcontrollers)

• Response Time: Fast, capable of detecting modulated signals up to 50kHz

• Package: 5mm (standard LED size)

• Operating Current: 20mA (typical)

• Sensitivity: High sensitivity for standard infrared communications

Limitations:

• Line-of-sight is required for optimal performance between the infrared LED transmitter and the receiver.

• The receiver may be sensitive to ambient light such as sunlight or strong artificial lighting, which can interfere with detection.

• Distance and accuracy depend on the intensity of the transmitted signal and the quality of the receiver’s lens. Typically effective within a range of 3-5 meters.

• Requires modulated infrared signals for communication—cannot detect continuous IR light without modulation.