A surface-mount device, often known as an SMD, is an electronic device in which the components are attached or put directly on the PCB’s surface.

The process for creating an SMD is known as surface-mount technology, or SMT. The through-hole technology building method of inserting components with wire leads into holes in the circuit board has mostly been supplanted in the industry.

For components that aren’t suitable for surface mounting, such as big transformers and heat-sinked power semiconductors, both methods can be utilised on the same board.

Because SMT components have smaller or no leads, they are generally smaller than their through-hole counterparts. It might feature a variety of short pins or leads, flat contacts, a matrix of solder balls (BGAs), or terminations.

P10 and P4, the number behind P represents the pixel dot spacing, so the LED display P10 is spaced 10mm apart, and the P4 display dot spacing is 4mm. Moreover, the smaller the number behind P, the more pixels in the unit area, the more clear the picture, the pixel density of P10 display is 10000 points/m2, and P4 is 62500 points/m2, so the clarity: P4>P10


In addition, the P4 full-color display is used indoors. As for the P10, it is generally used in the wild environment. In the indoor environment, the P10 is not used at all. So the main difference between LED display p10 and p4 is as follows:


1. First, the indoor display screens are all surface-mounted, three-in-one or three-in-one; while the outdoor is usually plugged in, of course, there are also integrated three-in-one, but the technology is relatively not very sophisticated, application areas Not much, the wild is still based on the inserted lights. Therefore, P10 uses a plug-in lamp, and P4 is a surface mount.


2. The frame structure is different (the room is not required to be waterproof, the outdoor request is waterproof), P10 is used for outdoor use, the environment is bad, it is waterproof, shockproof, dustproof, the cabinet needs IP65, the module needs glue; and the P4 is used indoors. You don’t have to do too tight waterproofing.


3. The brightness in the field is much higher than the brightness in the room, so the P10 is much brighter than the indoor P4 display.


4. The application environment is different. The LED display P10 is generally used in the wild environment such as squares and commercial pedestrian streets. The screen area is generally large and the viewing interval is relatively long. The P4 indoor display is generally used in indoor environments such as conference rooms and hotels. The area is generally small and the viewing interval is relatively close.