5050 SMDs used in
RGB LED strip lighting
The
5050 SMD is actually a 'tri' chip,
meaning it has three smaller chips in every
SMD. So each white
LED actually has three white chips inside. 5050s can also be used for colour-changing
LED tape, with red, green and blue chips inside each
LED.
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Simply put, these LED chips are called SMD 5050 because the dimensions of the chips are 5.0mm x 5.0mm. They have 3 LED diodes in one housing (sometimes called tri-chips), and are a lot brighter than individual 3528 LED chips.