What are the advantages and disadvantages of COB LED？

Chip-on-board (COB) LEDs are relatively new to the LED market and offer several advantages over the standard. COB LEDs are a single module in which a manufacturer bonds multiple LED chips (typically nine or more) directly to a substrate. Since the individual LEDs used in COBs are chips rather than traditional packages, these chips take up less space when attached to maximize the potential of the LED chip. When using multiple SMD LEDs mounted close together, the powered COB LED package acts more like a lighting panel than multiple individual light emitters.

Advantages of COB LEDs:

Thanks to the multi-chip package, the light-emitting area of COB LEDs can accommodate several times the light source of standard LEDs, greatly increasing the lumen output per square inch.

A COB LED uses a single circuit with only two contacts to power the multiple diode chips inside it. This results in fewer components per LED chip required for normal operation. In addition, the lower component count combined with the abandonment of traditional LED chip structure packaging can reduce the heat generated by each LED chip. The ceramic/aluminum substrate of the COB LED also acts as a more efficient heat transfer medium when an external heat sink is installed, further reducing the overall operating temperature of the assembly. When mounting the COB on a heat sink, it is important to carefully select a heat sink that will dissipate the heat generated so that the COB can perform to its full potential. Good heat dissipation improves energy efficiency and reduces failure rates in the long run.

Another reason COB LEDs can reduce failure rates is that individual LED chips no longer require spot soldering because each chip is attached directly to the substrate. Fewer solder joints means lower failure rates.

Since lenses and other traditional LED packaging components are no longer required when using COB LEDs, light loss is greatly reduced and viewing angles are increased.

Disadvantages of COB LEDs:

COB LEDs do have the disadvantage that they are currently only available in a limited number of colors (blue, green, pink, red, cool white, natural white, and warm white).

COB LED Lighting Applications:

COB LEDs can be used in a wide range of applications. While COB LEDs can be used for higher output general lighting, these devices are primarily used as solid-state lighting (SSL) fixtures to replace metal halide lamps in applications such as high bays, street lights, and high output track and downlights .

Shenzhen Aihongyang Lighting Co., Ltd. is a high-tech energy-saving company specializing in the production of COB LED planar light sources. The company has 6 automated production lines with a daily output of 400K. The main advantageous products are LED lighting matrix packaging and LED lighting lamps. The company relies on LED With many years of experience in LED application in the electronic packaging industry, we have a production team developed by experts, masters and senior engineers. Products and services, dedicated to the application of LED T5, T8, T10 fluorescent lamps, LED ceiling lamps, LED bulb lamps, LED spotlights, LED downlights and other lamps; dedicated to LED light sources and products with low light decay and long life services. Continuous innovation in LED application products. The enterprise adheres to the principle of "integrity and sustainability", treats products with monographs, treats customers with sincerity, and acts as a model of honest management with the determination to build a century-old enterprise. Realize the perfect combination of the company's planar light source and traditional lamps, and contribute high-quality and low-cost products to the LED industry.