What is IR LED (infrared light-emitting diode)?

An IR LED (infrared light emitting diode) is a solid state lighting (SSL) device that emits light in the infrared range of the electromagnetic radiation spectrum.

IR LEDs allow for cheap, efficient production of infrared light, which is electromagnetic radiation in the 700 nm to 1mm range. IR LEDs are useful in a number of types of electronics, including many types of remote controls for televisions and other electronics. Used with infrared cameras, IR LEDs can act like a spot light while remaining invisible to the naked eye.

Because IR LEDs can be used in conjunction with a number of different types of sensors, they are becoming common in machine-to-machine (M2M) environments and Internet of Things (IoT) applications. 

As you can see in the pictureL for these 5050 SMD LED, there have three position for the LED chip. For some application, there don't need much high power LED for working. Sometime we just need some small power 940nm LED for emitting some infrared radiation. In order to save the cost and produce some uniform radiation light, we usually packaged three small chip into the 5050 SMD LED case, which got SMD LED in the bottom of the case. There also have 6 pins on the SMD case and each side will got three pins. Each LED chip are independently, which means you can control the working number of the LED. Do you need some SMD LED 3 chips with 940nm LED? Contact us for more detail!