The WEJ563JC-T4A-DZ is a 5 mm infrared LED emitter with a peak wavelength of 940 nm, suitable for IR transmission in remote controls, obstacle detection, and optoelectronic circuits. It offers stable output and narrow beam angle for focused IR delivery.

Specifications

• LED Type: Infrared emitter
• Package: 5 mm through-hole (T-1 3/4)
• Peak Wavelength: 940 nm
• Forward Voltage (V_F): 1.2 V (typ.), 1.5 V (max.)
• Forward Current (I_F): 20 mA (typ.), 100 mA (max. pulse)
• Radiant Intensity: ~20 mW/sr (at 20 mA)
• Emission Angle: ~20° (narrow beam)
• Lens Color: Water clear
• Emission Color: Invisible IR (940 nm)
• Polarity: Long lead = anode (+), short lead = cathode (–)
• Storage Temperature: –40 °C to +85 °C
• Operating Temperature: –25 °C to +80 °C
• Material: GaAlAs infrared chip
• RoHS Compliant: Yes

Features

• 940 nm peak wavelength for IR remote and sensor applications
• Narrow beam angle for focused transmission
• Compatible with photodiodes and IR receivers
• Easy to integrate into breadboards and PCBs
• Ideal for DIY electronics, robotics, and IR communication
• Common use cases:
  - IR remote control transmitters
  - Obstacle detection and line-following robots
  - IR breakbeam sensors and counters
  - DIY alarm and automation systems