3mm Infrared (IR) LED Emitter 940nm

The 3mm Infrared (IR) LED Emitter 940nm is a high-efficiency infrared emitting diode designed for signal transmission and invisible illumination applications. Emitting light at a wavelength of 940 nanometers, this LED produces infrared radiation that is invisible to the human eye but easily detected by IR receivers, camera sensors, and photodiodes.

With a standard 3mm package size, it is ideal for compact electronic designs and PCB mounting. The typical forward voltage ranges between 1.6V and 1.8V, ensuring low power consumption and efficient operation in battery-powered devices.

This IR LED is widely used in remote control systems, infrared communication modules, night-vision support lighting, and opto-sensor circuits such as beam-break detectors and rotary encoders. Its stable emission and long operational life make it suitable for both DIY electronics and commercial applications.

Specifications

Component Type: Infrared (IR) LED Emitter
Lens Diameter: 3mm
Wavelength: 940nm
Forward Voltage: 1.6V – 1.8V (Typical)
Forward Current: Typically 20mA
Package Type: Through-hole
Lens Type: Clear infrared lens
Polarity Identification: Long leg (Anode), Short leg (Cathode)
Viewing Angle: Standard narrow to medium angle

Applications

Remote control transmitters
Infrared communication systems
Night-vision illumination support
IR obstacle detection modules
Beam-break sensors
Opto-isolator circuits
Speed encoders and position sensors
DIY and embedded system projects