LED SMD (surface-mounted device) bulbs are a type of LED bulb that use surface-mounted LED chips to produce light. These chips are mounted directly onto a printed circuit board, which allows for a high density of LED chips and a compact design.

SMD LEDs are smaller and more efficient than traditional through-hole LEDs, making them a popular choice for LED lighting applications, including LED bulbs. They are available in a range of colors and color temperatures, from warm white to daylight, and are often used in residential, commercial, and industrial settings.