LED SMD (Surface Mount Device)
This is newer technology. SMDs can be made much smaller and a lot thinner because the part is only soldered to the “surface” of one side of the circuit board.
LED DIP (Dual Inline Package)
This method of manufacturing is attaching a part to a circuit board is known as “through the hole”.
LED SMD Vs LED DIP
Most DIP screens have a separate LED (R, G, B) for each of the three main colours: Red, Green, and Blue. Some have an extra red LED, forming one square pixel from 4 lights. SMD LED screens are usually use 3-in-1’s, which are smaller, thinner, and brighter. There are DIP 3-in-1 bulbs, but they cost more and are naturally bigger than their SMD equivalents.
SMD LED light source is a very small with light chips enveloped in epoxy resin Generally speaking, the voltage per SMD LED is 2-3.6V, current 0.02A-0.03A, with very low voltage, current, and power consumption. Equivalent to 1/8 of incandescent light, 1/4 of traditional light. Under proper current and voltage conditions, the life span of SMD LED can reach 100,000 hrs. Compared to other LED tubes like Dip LED, the optical decay is reduced from 10% to 5% in 1000hrs. The life span of SMD LED is longer due to Automatic Equipment’s heat emitting process.
Mainly adopted 3528 and 5050/5060 SMD high brightness chip, single SMD LED over 5.5lm/1800MCD 3-in-1 SMD screens look better. They are a lot brighter, the colors are more vivid and true, and the picture is crisp and sharp. DIP displays are still cheaper to make, and because SMD is a newer technology, DIP on average has a longer lifespan or shelf life.
Quality control in the factory makes all the difference, especially with SMD being so much smaller. Machines that are decades old, or even can assemble DIP circuit boards by hand. SMD with no pin anchored through a hole, requires newer more-precise assembly methods.
More recently, video screens have hit the market with a new type of LED package. These screens use Dot-Matrix modules that mount just like any other DIP part, but have several RGB 3-in-1 LEDs sealed into one unit. This allows them to be even closer together than with SMD, meaning more brightness and resolution, while also being easier to mount.
They are as thick as DIP however, but you lose the ability to make a transparent or fully flexible display. Some of the costs are offset by the fact that assembly is as quick and easy as it gets, and the modules are becoming cheaper as demand increases. Failure of any one pixel means replacing the entire section, but the pins can go into sockets making them quick to replace.