AGY Launches Low-Loss Glass Fibre Yarn AGY has introduced L-Glass, a low-loss glass fibre yarn for printed wiring board (PWB) applications. The low dielectric constant (Dk) and low dissipation factor (Df) properties of L-Glass fibre are suitable for designs requiring increased signal speeds and better signal integrity than traditional E-Glass/epoxy substrate materials. Scott Northrup, director of new business development at AGY, said: 'Substrate materials that provide low dielectric constant and low dissipation factor properties have become an essential element of high-speed digital systems such as mobile communication base stations, high-end routers and servers, and high-speed storage networks. 'As these systems move to higher processing speeds, substrates with low-loss properties are needed to ensure the speed and integrity of the signals,' he added. Low-loss laminates for high-speed applications have traditionally been produced in one of two ways. In one method, a ...
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