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Ultimate Guide to LED Grow Light PCB Manufacturing


Wed, Apr 27, 2022

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LED grow lights

For LED grow lights, the most important part is the PCB board, which carries LEDs and dissipates thermal quickly. If you plan to develop an LED grow light brand, or if you want to make custom LED grow lights for your farm or indoor bases, this post by the one-stop LED grow light PCB manufacturer PCBONLINE will guide you through.

Part 1: Wavelengths of LED Grow Lights

LED grow lights are LED lights specially designed for plant growth and mainly shed red and blue light. The red light in the wavelength of about 700nm helps plants to bloom and bear fruits, while the blue light in the wavelength of about 400nm promotes plant growth.

LED grow light PCB wavelength

Different plants have different demands for red and blue light. For plants whose stems and leaves are what we want, such as lettuce, we can increase the portion of blue light LED beads in the PCB design. For plants whose fruits are what we want, such as tomatoes, we can increase the portion of red light LED beads in the PCB design.

Generally, the ratio of red and blue light of LED grow lights ranges from 9:1to 6:1.

For the comfort of the eyes, a small amount of green light LED beads are also added to the PCB design.

Besides red/blue LED grow lights, there are the other type - full spectrum LED grow lights, which imitate sunshine and serve as supplemental lighting.

LED plant lights

Compared with traditional grow lights, such as metal halide bulbs and high-pressure sodium lights, LED grow lights save independent rectifiers and can directly power on. What's more, LED grow lights greatly save energy.

Part 2: LED Grow Light PCBs

You may worry about the drop in LED working efficiency when the temperature gets high. But you don't have to, if your LED grow lights use quality PCBs that can dissipate thermal quickly.

LED grow light PCB

Most of the LED grow lights PCBs are aluminum-based. Aluminum PCBs from PCBONLINE have a thermal conductivity of 1W/mK to 9W/mK. This thermal conductivity is enough for the needs of most LED grow lights. From PCBONLINE, aluminum PCBs for LED grow lights can be single-sided, double-sided, flexible, single-layer, and double-layer.

However, if you want a better thermal conductivity of the LED grow lights, you can also choose ceramic PCBs for your design. Without a dielectric layer, ceramic PCBs have better thermal dissipation than aluminum PCBs. From PCBONLINE, you can have alumina substrate PCBs and aluminum nitride PCBs manufactured.

Besides aluminum PCBs and ceramic PCBs, from PCBONLINE, FR4, copper, and glass substrate PCBs are also available for LED grow lights.

One-Stop LED Grow Light PCB Manufacturing - From Initial Idea to End-Product Assembly

If you have designed PCBs for your LED grow lights and want to make them into reality, or if you have a plan to have LED grow lights manufactured for your farm but without a PCB design, you can work with the LED grow light PCB manufacturer PCBONLINE.

PCBONLINE, a one-stop advanced PCB manufacturer founded in 1999, has two large PCB manufacturing bases and one PCB assembly factory. PCBONLINE provides one-stop LED grow light PCB manufacturing from your initial idea to bulky production and end-product assembly.

Here are reasons for you to let PCBONLINE manufacture your LED grow light PCBs:

    • Our engineer can custom adjust the LED wavelength best for your plant growing.
    • From PCBONLINE, LED grow light parameters can be tailored, such as light colors and lumen.
    • We already achieved industry 4.0 aluminum PCB production for LED grow lights, and the cost is only $30/㎡ for bulky production.
    • If you don't have an LED grow light PCB design, we can provide free open-source solutions for you.
    • One-on-one professional engineering support throughout your project until you get what you want.
    • PCBONLINE provides one-stop LED grow light PCB solutions, from prototyping/sampling to bulky production.

If you have any needs or questions about LED grow light PCBs, please feel free to contact PCBONLINE by email at info@pcbonline.com.


It is the PCB that enables LED grow lights to work for a long time and dissipate thermal quickly. If you want to have LED grow lights manufactured or look for turnkey LED grow light PCBs, don't miss the 23-year-old source factory PCBONLINE.