3mm IR LED

940nm 3mm IR LED Emitter & Phototransistor Receiver Pair Product Features

1. Precise Wavelength Matching: This 3mm IR LED emitter features a 940nm peak wavelength, perfectly aligned with the 940nm peak sensitivity of the matched phototransistor receiver. High spectral compatibility ensures stable signal transmission and low error rate, ideal for infrared remote control, through-beam sensing and detection applications.
2. Excellent Optoelectronic Performance: The 3mm infrared LED delivers 10-20mW/Sr radiant intensity at 20mA with 1.2-1.6V forward voltage, achieving low power consumption and long transmission range. The paired receiver provides 0.3-0.7mA on-state collector current and only 5nA dark current, with high sensitivity and strong ambient stray light resistance.
3. Fast Response Speed: The phototransistor receiver has a typical 15μs rise/fall time, supporting high-frequency pulse detection, dynamic counting and other real-time scenarios.
4. Standard Easy-Assembly Package: Both the 3mm IR LED and receiver adopt a standard F3 round head through-hole package with universal dimensions, compatible with automatic soldering and convenient for paired mounting.
5. High Reliability & Compliance: Epoxy resin package delivers great temperature and impact resistance with consistent batch performance. RoHS compliant, widely used in infrared remote control systems, photoelectric switches, smoke sensors, security through-beam systems, smart sanitary wares, interactive toys and more.