Thermal interface pads

16 February 2011 Manufacturing / Production Technology, Hardware & Services

MH&W International now provides U 90 silicone-free thermal interface materials (TIMs) with a new light tack adhesive to provide high thermal conductivity where contamination threats prevent the use of silicone-based thermal pads, and allow their easy positioning between components and heatsinks. Typical applications for Keratherm U 90 and U 80 silicone-free TIMs include medical devices, laser equipment, LED lighting, solar energy, disk drives and automotive electronics.

Keratherm U 90 is a ceramic-filled polyurethane film with a thermal conductivity of 6,0 W/mK and thermal impedance of 0,05 Kin²/W. A lower cost version, Keratherm U 80, also silicone-free, provides 1,8 W/mK of thermal conductivity and 0,11 Kin²/W of thermal impedance. Both TIMs are available with a light tack adhesive to keep them in place during assembly or pre-attached to heatsinks. The light tack adhesive can be compared with adhesives used on repositionable notes. The TIM pads will not be damaged when removed from mounting surfaces, which is a common problem when stronger adhesives are used.

The U 90 TIM with adhesive is available in thicknesses of 0,125, 0,225 and 0,325 mm; U 80 is 0,175 and 0,325 mm thick. Both TIMs are available on roll stock or custom shaped pads.

For more information visit www.mhw-thermal.com

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