LED Module Technical Specification - 109.3x51.01x1.0mm - 10-15V - 3-4.5W - CCT 3000K/4000K/6500K

1. Product Overview

This LED module is designed to meet the requirements of mainstream lighting fixtures, offering easy matching and convenient assembly. The module utilizes high-quality 2835 LED packages known for their high luminous efficacy, low heat generation, and environmental friendliness (mercury-free). Key features include low thermal resistance for improved heat dissipation, high color rendering index (CRI), and a wide selection of color temperatures. The electrical parameters are designed to be compatible with mainstream LED power supplies, ensuring seamless integration into various lighting systems.

The module supports multiple correlated color temperatures (CCT): warm white (3000K), neutral white (4000K), and cool white (6500K), making it suitable for residential, commercial, and industrial lighting applications. With a compact form factor and robust reliability, this module is an ideal choice for ceiling lamps, panel lights, and similar luminaires.

2. Technical Parameters Detailed Analysis

2.1 Optical-Electrical Characteristics

The module operates at a rated forward current of 300 mA, with a typical forward voltage range of 10-15V (depending on CCT version). Power consumption is between 3 and 4.5W. The luminous flux varies by CCT: 380-440 lm for 3000K, 420-480 lm for 4000K, and 420-480 lm for 6500K. The minimum CRI is 80, with typical values reaching 82-84. The color tolerance is maintained within a 5-step MacAdam ellipse, ensuring good color consistency across production batches.

2.2 Absolute Maximum Ratings

The absolute maximum ratings are defined to prevent damage to the LEDs. The maximum forward current is 280 mA continuous, with a peak current of 300 mA (non-repetitive). Reverse voltage should not exceed 5V. The module is rated for ESD sensitivity up to 2000V (HBM). Operating temperature ranges from -40 to +85°C, and storage temperature from -40 to +100°C. The junction temperature of each LED must be kept below 110°C to ensure long-term reliability.

2.3 Binning System Explanation

The module uses a binning system based on color temperature, luminous flux, and forward voltage. The part number encodes the CCT (e.g., 40 for 4000K), LED package type (2 for 2835), CRI bin (T for 84≥CRI>80), power rating (04 for 4W), and light emitting method (D for top view). This systematic naming allows customers to select modules with precisely matched optical and electrical characteristics for consistent lighting performance.

3. Performance Curve Analysis

Although detailed performance curves (e.g., I-V characteristics, lumen vs. current, color shift vs. temperature) are not provided in the datasheet, typical behavior can be inferred from standard 2835 LED performance. The forward voltage exhibits a positive temperature coefficient (approximately -2mV/°C per LED), which means at higher temperatures the voltage drops slightly. Luminous flux decreases with increasing junction temperature; a typical derating factor is around 0.2% per °C. The color temperature may shift slightly (within 100-200K) over the operating temperature range, but the module's binning ensures that shifts remain within acceptable limits.

For thermal management, the module's low thermal resistance design helps maintain junction temperatures within safe limits even under high ambient conditions. Users are advised to follow recommended heat sinking practices as outlined in the application notes.

4. Mechanical and Packaging Information

4.1 Outline Dimensions

The module has a length of 109.3±0.3 mm, a width of 51.01±0.3 mm, and a PCB thickness of 1.0±0.1 mm. These dimensions ensure compatibility with standard ceiling lamp housings. The PCB is designed with mounting holes and connector pads for easy integration.

4.2 Electrical Connection

The module consists of 4 LEDs connected in a 1P4S configuration (one parallel string of 4 series-connected LEDs). The input connector has positive and negative terminals, clearly marked on the PCB. The recommended driving current is 300 mA per module (string). Ensure that the power supply provides adequate voltage (10-15V) to drive the series chain.

5. Soldering and Assembly Guide

Soldering must be performed using lead-free reflow processes compatible with the PCB's solder mask. Avoid manual soldering if possible. During assembly, avoid twisting or bending the module more than 10°. Do not apply force to the LED packages or the connector; handle only by the PCB edges. The silicone lens surface of the LEDs is soft and can be easily scratched or contaminated; use appropriate tools for handling.

Cleaning after soldering is recommended if residues are present. Isopropyl alcohol is a suitable solvent; do not use ultrasonic cleaning as it may damage the LEDs. Ensure that the environment and mating materials contain less than 100 ppm of sulfur compounds, and that bromine and chlorine contents are below 900 ppm each (total <1500 ppm) to prevent chemical attack on LED encapsulants.

6. Packaging and Ordering Information

The module is packaged in cartons with protective cushioning. Each carton carries a shipping label that includes customer part number, manufacturer part number, bin codes for CCT, luminous flux, voltage, color rendering index, quantity, net weight, and date. The outer carton is marked with the manufacturer's logo and handling instructions. For ordering, specify the desired CCT version (3000K, 4000K, or 6500K) and any binning preferences.

7. Application Suggestions

This LED module is primarily designed for ceiling lamps, but can also be used in panel lights, troffers, and downlights. When designing the luminaire, ensure adequate heat sinking: a metal core PCB or thermally conductive mounting plate is recommended. The power supply should provide a constant current of 300 mA with an output voltage range of 10-15V. Use PWM dimming for color tuning if desired, but avoid dimming below 10% to maintain stable color.

For outdoor applications, additional sealing against moisture and dust may be required. The module itself is not waterproof. The operating temperature range of -40 to +85°C covers most indoor and outdoor environments.

8. Technical Comparison

Compared to standard LED strips or discrete LEDs, this module offers pre-assembled series connection and matched LED bins, reducing assembly time and ensuring uniform light output. The three CCT versions allow easy adaptation to different ambiance requirements. The module's high CRI (80+ typical) makes it suitable for applications requiring good color rendering, such as retail and hospitality. Alternative modules with lower CRI may be cheaper but compromise light quality.

9. Frequently Asked Questions

Q: Can I drive this module at a higher current? No, exceeding the absolute maximum forward current (280 mA continuous) may cause premature failure or reduce lifetime. The recommended current is 300 mA peak (non-repetitive).

Q: What happens if I reverse the polarity? Reverse voltage over 5V can damage the LEDs. Always ensure correct polarity connection.

Q: How do I clean the module? Use isopropyl alcohol and a soft cloth. Do not use ultrasonic cleaners or aggressive solvents.

Q: Can I cut the module to a shorter length? This module is not designed to be cut; the PCB layout is fixed for 4 LEDs. For shorter lengths, use a different module design.

10. Practical Use Cases

Case 1: Residential Ceiling Lamp A 3000K module is used in a 30W ceiling lamp to provide warm, cozy light for a living room. Four modules are connected in parallel to achieve the desired brightness, powered by a constant-current driver rated at 1200 mA.

Case 2: Office Downlight 4000K modules are installed in recessed downlights to deliver neutral white light for workspace illumination. The high CRI (82 typical) ensures accurate color representation of documents and objects.

Case 3: Retail Display 6500K modules are chosen for a clothing store to create a bright, cool ambience that makes colors appear vivid. The modules are mounted on aluminum heat sinks and dimmed to 70% to reduce glare.

11. Operating Principles

The module uses 2835 LED packages containing blue LED chips with phosphor conversion to produce white light. The 1P4S electrical configuration means four LEDs are connected in series; each LED sees the same current (300 mA) while the voltage divides across them. This arrangement provides a convenient voltage range for typical constant-current drivers. The PCB is designed with copper traces for efficient heat spreading, and the low thermal resistance of the LEDs allows heat to flow to the mounting surface. Junction temperature must be kept below 110°C to maintain reliability; this is achieved through proper thermal management.

12. Development Trends

The LED lighting industry continues to push for higher efficacy (over 200 lm/W is now common for high-end modules) and higher CRI (90+). This module's design is aligned with the trend toward compact, modular solutions that simplify luminaire design. Future iterations may incorporate integrated drivers, tunable white capability, or wireless control. Additionally, environmental regulations are driving the elimination of hazardous substances, which this module already complies with (mercury-free, low halogen requirements). The adoption of advanced phosphor technology will further improve color stability and lumen maintenance.