3mm Infrared Transmitter LED 940nm (3mm IR Emitter Diode)
The 3mm IR Transmitter 940nm is a compact infrared emitting diode designed to generate invisible IR light for sensing and communication applications. It operates at a peak wavelength of 940nm, which is widely used in IR remote control systems and optical detection circuits.
This smaller 3mm package is ideal for compact PCB designs where space is limited, while still providing reliable IR output. It is commonly paired with photodiodes or phototransistors for detection systems.
Key Features
- Infrared Emission 940nm optimized for IR systems
- 3mm Compact Package suitable for small designs
- High Radiant Intensity strong IR output
- Fast Switching suitable for high speed circuits
- Low Power Consumption efficient operation
- Compatible with photodiodes and IR receivers
Specifications
- Device Type: Infrared emitting diode
- Wavelength: approx 940nm
- Forward Voltage: approx 1.2V to 1.5V
- Forward Current: typically 20mA to 30mA
- Output Type: Infrared light emission
- Viewing Angle: typically 20 to 40 degree
- Package Type: 3mm round through hole
- Mounting Type: Through hole
Infrared LEDs at 940nm are widely used because most IR receivers are optimized for this wavelength, ensuring efficient signal transmission and detection
Applications
- IR remote control transmitters
- Proximity and obstacle detection
- Line follower robots
- Optical communication systems
- Encoder and interrupter circuits
Pinout Configuration
- Anode positive
- Cathode negative
Working Principle
- Current flows through diode
- Semiconductor emits infrared light
- IR light detected by receiver
- Signal used for sensing or communication
