Features of 3LEDs High Efficiency LED Backlight Module
1. Three-LED Configuration for Higher Backlight Output
The YS-MB6331 3-LED high-output LED backlight module integrates three SMD2835 LEDs into one lighting unit and delivers approximately 200 lm per module. This higher-output configuration is useful when a signage design requires more illumination from each individual module without continuously increasing the number of installation points.
2. 175° Wide-Angle Light Distribution
The 175° beam angle spreads light broadly throughout the sign cavity, helping reduce concentrated bright areas and supporting more even illumination across the visible face. This makes the module well suited to light boxes and illuminated lettering where uniformity is important.
3. Back Injection-Molded Housing
The module incorporates a rear injection-molded construction, creating a compact and lightweight body around the lighting assembly. This structure simplifies handling and keeps the module practical for installation inside different types of sign cabinets and illuminated letters.
4. Long-Life SMD2835 LED Platform
The SMD2835 LED technology is designed for long service life and stable light output, supporting commercial signs that need to remain illuminated for extended operating periods while maintaining consistent brightness.
3LEDs High Efficiency LED Backlight Module Dimensions(mm)

3LEDs High Efficiency LED Backlight Module Layout Density Guidelines
These factory-tested layout density guidelines are engineered specifically for our YS-MB6331 high-efficiency LED sign modules, ideal for commercial backlit signs, channel letters and custom light box fabrication. Reference the table below for engineer-recommended LED spacing (DX/DY), installation density per square meter, and projected surface illuminance across standard light box thicknesses. This reference helps signage fabricators and project engineers deliver uniform, shadow-free brightness across every sign face, while optimizing module quantities and keeping project costs on budget.
| Light Box Thickness(mm) | LED Spacing(mm) | Installation density(PCS/m²) | Surface illumination(Lux) | Watts per square(W/㎡) |
| 40 | DX=110, DY=65 | 140 | 7000~12000 | 207 |
| 50 | DX=130, DY=80 | 96 | 7000~8000 | 138 |
| 60 | DX=150, DY=100 | 66 | 5000~6500 | 96 |
| 80 | DX=160, DY=120 | 52 | 3500~5000 | 74 |
| 100 | DX=160 DY=140 | 44 | 2500~3500 | 64 |
| 120 | DX=160, DY=160 | 39 | 2000~3000 | 56 |

3LEDs High Efficiency LED Backlight Module Wiring Diagram & Installation Guide

Recommended Applications for 3LEDs High Efficiency LED Backlight Module
1. High-Output Channel Letter Illumination
The YS-MB6331 3-LED LED module is well suited to illuminated lettering that needs stronger output from each lighting point. Its 200 lm per module helps provide sufficient brightness across larger characters while giving sign manufacturers more flexibility when determining module quantity and spacing.
2. Commercial Facade Identification Signs
The module can be integrated into illuminated building names, corporate identity signs and other facade-mounted displays. Its IP67-rated construction provides added protection where the lighting system is exposed to dust and moisture, while the 12V DC design keeps the electrical system straightforward.
3. Transportation & Public-Facing Displays
The product can be considered for illuminated identification and advertising structures in airports, subway stations and other high-traffic public environments. Its combination of stable 12V operation, IP67 protection and long-life LED technology makes it appropriate for signage that operates for extended periods.
4. Custom Large-Character Sign Systems

Packaging & Shipping Information for 3LEDs High Efficiency LED Backlight Module
| Item No. | Qty Per bag(PCS) | Per/Carton(Bag) | Total Qty(Bag) | GK(Kg/Carton) | Dimension of outer carton(mm) | ||
| L | W | H | |||||
| YS-MB6331 |
100 |
20 |
2000 | 21 | 520 | 300 | 360 |

Professional 3LEDs High Efficiency LED Backlight Module Manufacturer & Supplier
Founded in 2013, YESUN LED is a Shenzhen-based manufacturer specializing in LED signage and commercial lighting solutions. With 5,000㎡ of automated factory space, dedicated SMT lines, and strict full-process QC, we support OEM/ODM projects for customers in over 100 countries. To learn more about our team, factory, and production capabilities.
Product Certifications & Compliance
Our products comply with international standards including UL, ETL, CE, and RoHS certifications to support different market requirements.
3LEDs High Efficiency LED Backlight Module Quality Control Process
We apply strict quality inspection standards throughout production to ensure stable performance and reliable quality before shipment.



















