MH&W International has introduced Keratherm U 90 thermal interface material, manufactured by Kerafol, for use where contamination concerns prohibit the use of silicone-based thermal pads, but where high levels of thermal conductivity are needed for sufficient thermal transfer in hot electronic devices.

U 90 material consists of a ceramic-filled polyurethane film with thermal conductivity of 6.0 W/mK and thermal impedance of just 0.05 Kin2/W. The material has a high dielectric breakdown property of 20 kV/mm. It provides strong perforation protection with a tensile strength of 2.0 N/mm2 and a Shore A hardness of 70.

Typical applications for silicone-free U 90 thermal interface pads include medical devices, laser equipment, lighting systems, solar energy, disk drives and aerospace electronics.

MH&W’s Keratherm U 90 interface material is available in 0.1, 0.2 and 0.3 mm thicknesses (3.9 and 7.8, and  11.8 mil). Standard and custom shapes are available in continuous rolls for automated or manual application. Pricing for U 90 thermal interface pads starts at $0.25 for 1 inch square, 0.200 mm thick pads in high volume quantities.

U 90 silicone-free thermal interface materials are part of Kerafol’s Keratherm line of thermally conductive interface materials. More information on U 90 pads can be found at or by calling 1-201-891-8800 for samples and quotes.