84N

The 84N from Arlon Electronic Materials is a Ceramic-Filled Polyimide Prepreg that is based on Arlon’s 85N pure polyimide system. It is designed for use in filling etched areas in polyimide multilayers that contain thick copper layers and for filling clearance holes in metal cores. The ceramic filler in the resin serves to reduce shrinkage and inhibit crack formulation during through-hole drilling in filled clearance areas. It meets the IPC4101/40 and /41 description and specification and provides excellent thermal properties with Tg of 250°C and a decomposition temperature of more than 407°C. This prepreg has low Z-axis expansion which minimizes the risk of latent PTH defects caused during solder reflow and device attachment.

The 84N is suitable for use in PCB's that are subjected to high temperatures during processing, such as lead-free soldering, HASL, IR reflow. It can also be used in applications with long term exposure to high temperatures such as aircraft engine instrumentation, down hole drilling, under-hood automotive controls, burn-in boards, or industrial sensors.