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A Novel Halogen Free and Low Dk/Df Laminate Material for High Frequency Application
Keywords: Low DK/Df laminate, High speed, Low signal loss
Halogen free laminate materials had been developed due to the market and RoHS or other environmental directive in past several years. However, high speed and low signal loss requirements are also needed for halogen free material because the application frequency of electronic products also become higher and higher. Therefore, the low Dk/Df value should be achieved by the special design for laminate resin. Based on the above background, a novel halogen free and low Dk/Df material, IT-178GD, was developed in ITEQ. The special flame retardants and resin are used in IT-178GD to achieve UL94V-0 and good dielectric property. Its Dk/Df value varies from 4.0/0.007 to 3.8/0.008 with the frequency increased from 1GHz to 10GHz. Except for the above stable dielectric property, IT-178GD has low CTE(50~260) about 3.2% and high thermal resistance (higher than 60min for T288), which assures high PCB reliability for IT-178GD. Therefore, IT-178GD is good environment- friendly choice for high speed and low signal loss application in high frequency communication in future.
Sanny He, Manager
ITEQ Corporation
Dongguan City, Guangdong Province 523925,
China


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