Recently, some big sites popped up the different price of ten well-known LED lighting brand. The contrast showed the big price variance between the LED bulbs with the same parameter. For example, a 7W LED bulb of one brand cost 7.88 dollars, another brand is 2.12dollars. what is the cause of the tremendous difference price between the LED bulb with the same parameter? Today, I will expose the secret of the big price variance between LED bulbs with you!
1. The difference of lamp bead
There is a very big different price between different quality and types of lamp beads. Such as lamp bead 2835, some cost less than 0.032 dollar, while some cost above0.11 dollar. In order to chase low-cost, some manufacturer employ poor quality lamp beads, which result in frequently serious light degradation. That will shorten the life of bulbs.
2. PCB
The price variance is also very big while compare with different materials of PCB. Like the aluminum substrate is about 32.24 to 48.36 dollars per sqm and FR4 is 24.18 to 32.24 dollars, but the lowest paperboard is only several dollars. Actually, the same aluminum substrate and FR4 also have difference price. Difference materials have difference heat conduction. It will impact the life of LED for the poor thermal conductivity of paperboard.
3. Power source
The power source impact LED price mostly for its different price and large mains fluctuation. A RC voltage-reducing cost only 0.16 dollar, but a high quality switching mode power supply cost 0.96 dollar or more than 1.62 dollars. Power source impact the quality of LED bulbs largely, so inferior power source easy to break down, such as dead lamp and so on.
4. Structure
There is a tremendous difference in the price of different material structure as well as the same structure. Plastic structure is entirely different from metal structure. With the same material structure, the price of public mold and private mold vary widely. The quality of material can influence the heat dissipation and the safe of user.