How to choose the core component of a plant grow light—LED chips?

Release Date:

2024-07-04

An LED grow light is an artificial light source that uses LED chips as the light-emitting elements to provide the lighting conditions required for plant photosynthesis.

LED chips are the core component of grow lights; high-quality chips ensure reliable operation and emit a spectrum of wavelengths tailored to meet plants’ growth needs, thereby strengthening root development, promoting vegetative growth, regulating flowering time and flower color, accelerating fruit ripening and coloring, and enhancing taste and overall quality.

Selecting the right, high-quality LED chips is the top priority in the manufacturing of plant growth lights.

The primary difference between plant-growth LED chips and conventional LED chips lies in their spectral bands.

Plant-growth LED chips are designed and configured to match the specific light spectra required for plant development, whereas conventional LEDs typically emit either white light or standard red light (primarily in the 620–630 nm range). However, different plants may require red wavelengths as narrow as 640–650 nm or as broad as 730–740 nm. Moreover, even within the same species, the optimal light spectrum varies across different growth stages. Therefore, it is essential to use more precisely tailored plant-growth LED chips to achieve the right spectral balance in grow lights.

When selecting LED chips for plant growth lighting, the primary consideration is the desired wavelength range, which determines the optimal spectral balance of the light source. In general, plant lighting and grow lights predominantly use blue, red, and violet light; yellow light is also sometimes employed. Red light primarily promotes flowering and fruiting, while blue light mainly stimulates stem and leaf development.

Commonly used LED chips include 5730, 2835, and 3030 LEDs.

Red light: 620–650 nm
Blue light: 460–470 nm
Violet light: 390–40 nm


Using LED beads for plant growth lighting is not only energy-efficient but also allows for customizable color tuning, making it more versatile and flexible in application.

More information

What is a light-emitting diode?

Light-emitting diodes are commonly referred to as LED beads. They are used in a wide range of applications and can be seen on streets and in alleys everywhere. For example, traffic lights at intersections remind people to obey traffic rules; remote controls transmit or receive signals; they can be used to display images on ultra-large screens; and various streetlights provide warm illumination at night. Even everyday household appliances rely on their contributions.

What are the tips for selecting LED chips?

1. Brightness: LED brightness varies, and so does the price. LEDs used in LED lighting must comply with laser safety classification standards.

What factors influence the price differences of LED light beads?

LED chips are a well-known product in the LED industry; however, many people are less familiar with their pricing. What causes such wide variations in LED chip prices? Below, we will outline the factors that influence LED chip prices.

What is the light-emitting principle of LED chips?

An LED chip is a light-emitting diode, and an LED bulb is simply the common, colloquial term for an LED.

Are you familiar with full-color LED chip-on-board modules for side mounting?

The brightness of full-color LED surface-mount devices is closely related to the LED’s viewing angle. The narrower the viewing angle, the higher the brightness; moreover, differences in manufacturing processes can lead to significant variations in service life. For a 5-mm LED with a 180-degree viewing angle, the white-light luminous intensity is only a few hundred mcd, whereas for a 15-degree viewing-angle LED, the luminous intensity exceeds 10,000 mcd. When high-power LEDs are used outdoors, the brightness is even greater. Single-power LEDs include 1 W, 3 W, and 5 W models; some high-power LEDs can be combined to form a single high-power LED with output up to several hundred watts. Color temperature is independent of brightness, but brightness is directly related to the lumen value.

Key Considerations for Full-Color SMD LEDs on the Side

Side-view full-color LED chips, also known as surface-mount LEDs, are a type of simple lighting device. Their light-emitting principle is based on passing an electric current through a compound semiconductor; when electrons and holes recombine, the excess energy is released in the form of light, thereby producing illumination.