MCPCB-XEG-4821LIN

Aluminium PCB for High-Density LED Applications: MCPCB-XEG-4821LIN

Overview

Designed for versatility and high performance, the MCPCB-XEG-4821LIN Aluminium PCB is tailored to support 4 XEG high-brightness LEDs making it ideal for extensive lighting applications. The board dimensions are 48mm by 21mm. The board has 4×2 +/- solder pads for termination for several topologies.

Optimal Thermal Management

The board incorporates a standard thermal path through a dielectric layer positioned under the LED thermal pads. This design ensures efficient heat dissipation, critical for maintaining the LED’s junction temperature well below its maximum rated value as per LED manufacturer specifications.

Cooling Recommendations

For optimal thermal performance, it is recommended that the PCB be mounted onto a suitable finned heat sink made of aluminium or copper that is exposed to open air. The mounting can be achieved through various methods, including:

• Pressure sensitive, thermally conductive tape (Recommended)
• Thermal Compound: Requires the use of mechanical fasteners

Ensure that both mating surfaces are clean and flat before assembly to maximize heat transfer efficiency.

Mechanical Stability

Mechanical fasteners are recommended to secure the module robustly, ensuring stable and durable mounting. The base of the LED MCPCB is electrically neutral, which eliminates the need for electrical isolation from the cooling surface.

Optics Integration

This PCB is compatible with leading optics solutions from Ledil, Khatod, and Linear Optics, which can be adhered to the PCB using specific adhesives. This design while useful in generic designs is specific to the Ledil Coral CS19838_CORAL-IP-OW

For detailed assembly instructions, refer to Ledil’s generic guide on LED/optics assembly, available for Download

Electrical Configuration

The PCB features Anode and Cathode pads at its sides, supporting various wiring configurations including standalone setups or grouped in series or parallel arrays, enhancing design flexibility.The design allows for specifically RGBW Linear, Individually addressable for all 4 leds. all 4 leds in series and 2Series/2 parallel, making it a highly versatile design

Technical Specifications

• Part Number: MCPCB-XEG-4821LIN
• PCB Technology: Aluminium
• PCB Type: Aluminium, non-direct thermal path Linear PCB
• Dimensions: 48mm x 21mm x 1.65mm
• Base Metal: Aluminium
• Finish Thickness: 0.065” (1.65mm)
• Thermal Conductivity: 3 W/m.K
• Surface Finish: ENIG (Electroless Nickel Immersion Gold)
• Glass Transition Temperature: 170°C
• Compatible LEDs: Cree XEG, USHIO EDCC series

Applications

The Cree XEG comes in 17 colours and White, this provide a massive possible colour range of 000’s of combinations in both direct colours as well as phosphor converted colours including whites

Considerations for Servicing

Note that the use of thermal adhesives may render the PCB difficult to remove without potential damage. Consider this when planning for maintenance or future upgrades, as selecting an alternative thermal interface material (TIM) might be advisable.