MechaTronix achieves thermal management of 5000-lm COB LED sources with low-profile LED coolers

May 11, 2015
With the current lumen boost of many tier 1 LED manufacturers, the demand raised exponentially for ultra-low profile LED coolers for use in height restricted down light applications.

Although the increase in lumen per watt and internal efficacy of recent COB LED modules has made the use of passive LED cooling much more likely, most standard LED coolers in the market aimed for classic designs where the cooling surface was created by a smaller diameter with a bigger height.

MechaTronix now launches the ModuLED Mega 13420. With a diameter of 134mm and a height as low as 20mm, this LED coolers perform with a thermal resistance of 1.32°C/W or the equivalent of 5000 lumen.

The challenge in this ultra-low LED cooling profile comes from the spreading of the heat source to the rest of the design. Creating enough basic cooling surface in a wide diameter low profile LED cooler is not that hard. But the COB LED areas have been shrunken over 40% in the last two years to obtain an easier light image control with secondary optics.

Also the power density on that area has significantly increased from 25 watts in a 28x28 package to recently 50 watts and more. With this major change in light engine approach, the spreading resistance of low-profile LED coolers becomes the focal point to guarantee the lifespan of the lighting design.

Through advanced thermal engineering and hundreds of hours of thermal simulations, MechaTronix has reached its ultimate goal on this 20 millimeter low profile LED cooler: a maximum temperature drop of 3 degrees Celsius from the heart of the cooler to the outer diameter cooling area, equivalent for the perfect internal spreading resistance.

To avoid extra costs with afterwork, the ModuLED Mega again leverages ground-breaking modularity with mounting holes that allow for very easy attachment of a great number of market-leading LED engines. Looking at the specific purpose of these LED coolers to support ultra-low downlight applications with higher lumen packages, MechaTronix has added besides the Zhaga platforms some extra mounting pitches on this design for the Tridonic Talexx FLE and DLE, Osram PrevaLED Cube, Philips Fortimo DLM, and a further score of tier 1 LED manufacturers.

Full details of the ModuLED Mega LED cooler are available on our website.

Samples and pricing can be obtained through the worldwide distribution network:


Submit new products, case studies/projects, and other press releases at and