The MCPCB-XP20-Star made in TPAD uses latest pillar design technology to minimise thermal resistance by eliminating the dielectric layer so that the LED thermal pad is soldered directly to the aluminium or copper base. This ensures the lowest possible LED junction temperature, resulting in increased LED life, light power output and overall reliability.
The MCPCB-XP20Star is designed to take 1 leds, with 3.45×3.45mm base, so will suit Cree XPG, XPG2, XPL, XHP35, Nichia NVSL219 and numerous other leds with the same base dimensions. The board layout is for a single Led
Direct Thermal Path : No Dielectric under the thermal pad of LED
The MCPCB-XP20Star module requires careful attention to mounting and cooling to ensure that the junction temperature of the LED is kept well below the maximum rating as specified in the LED documentation published by Led Manufacturers
For optimal cooling, we recommend that the module be mounted to a suitable finned heat sink (aluminium or copper) that is exposed to open air. The module can be mounted to a heat sink in various ways
- 20mm pressure sensitive, thermally conductive tape (Recommended)
- Arctic Alumina thermally conductive adhesive
- Thermal Compound: Requires the use of mechanical fasteners
Before fastening the module to the heat sink, ensure that the two mating surfaces are perfectly flat and clean in order to maximise heat transfer to the the sink.
The bottom of the LED MCPCB is electrically neutral, so it is not necessary to electrically isolate the base from the cooling surface.
Please note the use of Thermal Adhesives makes the PCB unlikely to be removed for servicing. Please consider this if removal of the board is desired as another TIM may be a better choice.
Optics Support: The board is drilled to take Ledil pinned Optics and other optics with the same pin footprint*
Heatsink: Small Form heatsinks to suit
Termination: The board has multiple pads in Cathode and anode to allow for wire clearance in multiple application
* some holders may require modifications to allow wire access to the PCB, Cutter assumes no responsibility for holder modifications
Specifications
| Part # | MCPCB-XP20Star |
|---|---|
| PCB Technology | Direct Thermal Path Copper |
| PCB type | 20 mm Star PCB |
| PCB Size | 20mm x 1.65mm |
| Base Metal type | Copper |
| Finish thickness | 0.065”(1.65mm) |
| Direct Thermal Path | YES |
| Thermal Conductivity | 390.0 W/m.K |
| Surface Finish | ENIG |
| Glass Transition Temp. | 170 degree Celsius |
| Compatible LED | Cree XPG, XPG2, XPL, XHP35, Nichia NVSL219 |
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