SMD stands for surface mounted device technology. This means that the LEDs are soldered to a printed circuit board. In an SMD LED lamp, the LED chips are placed together in a few blocks. LED chips are very small, but visible to the naked eye.
RikWS2812B RGB led - 10 piecesSuper bright, easy to use with the normal WS2812B library and can even be soldered on normal prototype circuit boards. Be careful with the orientation of this mini thing. Glad I ordered them!