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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.
03/19/2019 | Alun Morgan, EIPC
EIPC Chairman Alun Morgan writes about the highlights of and the technical discussions at the recent EIPC Winter Conference held in Milan last February 14–15.
03/05/2019 | Martin Goosey
The Institute of Circuit Technology hosted its first 2019 seminar at the Woodland Grange Hotel in Royal Leamington Spa in the Midlands of England on February 26. The diverse programme of four presentations was introduced by ICT Chairman Andy Cobley, a professor at Coventry University, who stood in for Bill Wilkie, who had been taken ill at short notice.
01/28/2019 | Barry Matties, I-Connect007
ESI’s Chris Ryder, director of Product Management, and Shane Noel, Flex Systems product manager, discuss laser vias for flex users and the increasing necessity for companies to collaborate early on and become more and more involved, whether that be in the product design, or with the process or base material manufacturers.