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More powerful LED applications demand an increased focus on thermal management. More powerful LEDs produce more heat and temperature rise has an impact on the short-term function of a LED part such as color shift and reduced light output.
The long-term effects shouldn’t be neglected either. Higher operating temperatures can result in a reduced life time.
To reduce the operating temperature, and thus the impact of the temperature on LED applications or power converters, Eurocircuits has upgraded its IMS material. The formerly used Polytherm TC-Lam 1.3 is now succeeded by Polytherm TC-Lam 2.0.
The main difference is the dielectric. This thermally conductive layer has better properties, such as thermal conductivity of 2.0 W/mK (upgrade from 1.3 to 2.0), and thermal resistance: 0.50 K/W (lowering from 0.77 to 0.5).
The thick aluminum (alloy 5052) layer remains the same and is responsible for the heat dissipation. The copper foil on the opposite side is still 35 microns thick. This copper layer forms the base for the circuit. Other service parameters remain unchanged.
04/29/2021 | I-Connect007 Editorial Team
Mark Thompson has been in bare board fabrication for over 30 years. He is now laying out printed circuit boards at Monsoon Solutions, a high-tech design bureau near Seattle, Washington. With Mark’s extensive hands-on knowledge of PCB manufacturing, he brings a unique perspective to PCB design. In this discussion with the I-Connect007 editorial team, Mark shares what’s important from a process engineer’s point of view, and how to stay on top of evaluating and benchmarking your manufacturing process, along with insights from his new role as a designer.
04/26/2021 | Nolan Johnson, I-Connect007
Nolan Johnson speaks with Michael Gay of Isola and Chris Hunrath of Insulectro about the release of their new halogen-free, high-thermal reliability material, which they hope fills the gap in the market between epoxies and polyimides.
04/26/2021 | Pete Starkey, I-Connect007
EIPC’s seventh Technical Snapshot webinar on April 14 was timely and appropriate. In the context of current supply chain issues and material price pressures facing the PCB industry, particularly in Europe, the EIPC team brought together an outstanding group of experts—each a leading authority in his field—to analyse and comment upon the areas of concern and to respond to questions raised by a capacity audience. As Alun Morgan said, “If you don’t use the European supply chain, you won’t have it anymore!”