Let's first take a look at the characteristics of LED lamp beads? The angle of the LED lamp beads is very small, because the light is more concentrated, the range is very long, but the lighting plan is limited; and the general angle of the LED patch is made very large. , because the light is relatively scattered, the illumination plan is wide, but the range is relatively close. The LED lamp bead is selected for discharge and light emission, and the LED patch is selected for cold light emission.

In contrast, what are the advantages of SMD? LED SMD is also a kind of LED lamp beads. Common LEDs have two or four pins, and some have no pin-like pins, which are soldered close to the copper foil of the circuit board, all the same. The key to choosing a lamp bead is to consider the color temperature, color rendering index, light efficiency, light decay, and the quality of the power supply. Buy these things and buy better quality ones.

What is the difference between them? There are many ways for LED lamp bead chips, and the main thing is to consider the heat dissipation methods of various powers. You can find a salesperson of an LED chip manufacturer on the Internet, ask them for a piece of information, and then ask them about it, and you will have a very thorough understanding.

The advantages and disadvantages of each are explained in detail

Regarding the LED lamp beads, what is its advantage? The cob in the LED lamp. The shape of the led lamp bead has undergone in-line insertion and patch. With the advancement of technology, it is a matter of course that multiple led light-emitting chips are highly integrated and directly packaged on the substrate (integrated design of circuit and heat dissipation), forming a compact structure, high power, and large size. Power led light-emitting element, this is "COB" (seemingly a lamp bead, theoretically a group of lamp beads).

As for the patch, what are its advantages? Integrated LED is generally a nickname for COB light source in the market, but in theory, the characteristics of COB light source cannot be clearly described. COB refers to Chip-On-Board, which directly encapsulates low-power chips on aluminum substrates to quickly dissipate heat. The chip area is small, the heat dissipation efficiency is high, and the drive current is small. Therefore, it has high heat dissipation with low thermal resistance and high thermal conductivity. Compared with the general SMD low-power light source characteristics: higher brightness, small thermal resistance (

If the light is on, it means that the function of the lamp bead is not hindered at all. If the light is not on, exchange the red and black test pens and test again. Avoid the cathode and anode of some lamp beads that are opposite to the general ones. The lamp beads are lit to observe the color of the lamp beads, whether the color temperature can meet the requirements. Whether the brightness is suitable. Choose suitable lamp beads. Therefore, we found that both of them have their own advantageous addresses.