Advertorial Utilize the LED 660nm and LED 730nm in horticulture lighting

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Advertorial Utilize the LED 660nm and LED 730nm in horticulture lighting

Horticultural LED technology has revolutionized the way we cultivate plants, offering precise control over light spectra to optimize growth. In this article, we delve into the significance of 730nm and 660nm LEDs, with a special focus on the innovative LED products by Ledestar. We explore their role in plant growth and how these LEDs are transforming horticulture.

Horticulture has undergone a remarkable transformation with the advent of LED technology. Light-Emitting Diodes (LEDs) have become an essential tool for modern horticulture lighting to their energy efficiency, longevity, and spectrum tunability. In this paper, we will investigate the key spectral ranges provided by horticultural LEDs, particularly the 730nm and 660nm wavelengths, and their application in plant cultivation, highlighting products from Ledestar.

The Importance of Spectral Quality:

Light is a fundamental factor in photosynthesis, regulating plant growth, development, and yield. Various regions of the wavelength influence plant processes, and two critical wavelengths for horticulture are 730nm and 660nm.


730nm LEDs:

The 730nm wavelength is within the far-red spectrum, playing a vital role in plant development. It has been proven to enhance plant elongation, branching, and flowering. The far-red light suppresses the shade-avoidance response in plants, promoting upward growth. Ledestar's 730nm LED chips available in SMD 2835,SMD 3030, SMD 3535, and the LED have been engineered to provide a reliable and consistent light source for growers, aiding in the optimization of plant architecture.

660nm LEDs:

Conversely, the 660nm wavelength falls within the deep red spectrum and plays a crucial role in photosynthesis. This range is highly efficient at driving photosynthetic processes, particularly the conversion of light energy into chemical energy. Ledestar's 3535 660nm LEDs are designed with high PPE 4.6μmol/j @700ma , which is essential for promoting strong vegetative growth and flowering.

Ledestar: Leading the Way in Horticultural LED Technology:

Ledestar has emerged as a prominent player in the horticultural LED market, specializing in innovative products that cater to the unique needs of growers. Their commitment to quality and precision sets them apart in this field. Ledestar's horticultural LED chips are engineered to deliver the exact wavelengths required for optimal plant growth.

Spectrum Control:

One of Ledestar's key strengths is their ability to provide precise spectrum control. By offering both 730nm and 660nm LEDs, they empower growers to fine-tune the light environment to match the specific needs of their crops. This level of customization leads to enhanced photosynthesis and better crop yields.

Energy Efficiency:

In addition to spectral precision, Ledestar's LEDs are highly energy-efficient. The low power consumption of LED technology is a significant advantage in horticulture, reducing operational costs while maintaining high light output.


Another noteworthy feature of Ledestar's products is their exceptional longevity. LED technology boasts a significantly longer lifespan compared to traditional lighting sources, further reducing the cost of ownership and the environmental footprint.

Horticultural LED technology, with its ability to finely control light spectra, has reshaped modern agriculture. The utilization of 730nm and 660nm wavelengths, particularly through products like Ledestar's LED chips, has allowed grow light companies to optimize light fixture parameter and increase yields. The future of horticulture is brightly illuminated with LED technology, offering sustainable and efficient solutions for agricultural practices. As the industry continues to evolve, it is crucial for growers to stay abreast of these advancements and take advantage of the incredible benefits these technologies offer.


New member
Good day, Sheldon.
I'm new to lighting technology for plants (don't scold too much).
Industrial automation engineer, assembling hydroponics from structure to automation.
+ solar system with solar collectors, ground accumulator, recuperators - for cooling/heating/ventilation.
+ vermicompost + peat substrate (experiments with Trichoderma were successful. I don’t have nutrient solutions).
+ pumping station - water spraying, lighting.
The principle is cheap, simple, reliable (for people with low and middle incomes).

Problems with lighting - I bought samples twice on Alibaba, very poor quality, fake LM301H diodes, low-quality acrylic (light loss 15-20%), ballast resistors (we heat the air).

I had several questions, I wrote to support three times, no answer.
The topic turned out to be quite serious, so I am turning to you for support and advice!!!

I have an arugula culture, spectrum 5000+660, PPFD 150-170.

A Chinese company provided me with PPFD data at various heights, 4000+660 lamp, Sanan and Epistar diodes, 30W.
- Spectrum Test


- counted the number of lamps at a height of 0.23 m - 378 lamps, high power consumption - 11.4 kW/h))
- PPFD 140-145;
I want to make a cheap, less energy-intensive version of the 5000+660 spectrum.


Separately 5000K module, separately 660 nm ribbon.
I chose the SI-B8R243B20WW 5000K module, V.Gen3 series
・4400lm ・530mA ・50°C ・Vf 44.4V ・187lm/W ・1.8A ・CRI80 ・118°・1120 x 18
-data at ambient temperature 50°C.
Page 4 Rated Lifetime >50,000 hour L70B10@ tp≤80ºC, Rated current
Page 12
c) Schematic Circuit
- VB22C 16S x 6P = 96 LM281+PRO diodes.
There may be an error here:

- 21.6/40.8=529, probably the current will be 530 mA?!

Questions for specialists and manufacturers:
- current 530mA and voltage 44.4V are the manufacturer’s recommended parameters?
0.5 W, 2.7 V mid power LED
Luminous Flux: 37.5 lm @ 65 mA Luminous
Efficacy: 213 lm/W
65mA*2.7 V= 0.1755W; 1/0.1755W=5.698; 5.698*37.5lm=213.675 lm/W
In terms of energy consumption, it’s like LM301 (it’s important for me to offer cheap solutions!).
But I did not understand the diode wiring diagram.
If 530mA/65mA=8 parallel diodes, where the voltage is 2.7V.
96 diodes/8=12, 12x2.7=32.4V, and we have 44.4V.
- is there actually 65mA current on each diode?
If you count from the reverse - 44.4V/2.7V=16, 96/16=6, 530mA/6=88mA.
The result is a current of 88mA and at the same time 187lm/W?
And then what temperature will the led module have at a current of 88mA if the ambient temperature is 25°C?
Atleast approximately.

VERY NAIVE QUESTION, maybe someone has PPFD data of the SI-B8R243B20WW module at a height of 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8 m, where possible take? should have control measurements, but they don’t respond!
I would buy samples of this module for measurements (and 2-3 more 5000K modules with a power of 22-26W), but no one sells them individually.

660 nm, ribbon.
The Chinese company promised me to make any tape based on the LDR-2835TTAR660 diode.
They say the SI-B8R243B20WW module requires a 5:1 ratio, is that correct?

If you make the 660+730 tape separately, perhaps there should be such a scenario - separate inclusion of 730 in the morning and evening?
Sheldon, your experts can calculate two options for the SI-B8R243B20WW (5000K) module:
- separately tape 660 to obtain a spectrum of 5000K+660nm;
- separately 660+730 to get a spectrum of 5000K+660nm? - I buy silicone here.
Maybe there is good silicone in China?
Many thanks to everyone who responded!
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