EM-891K / EM-891KB high-speed laminates are low-loss and cure in 120 min at >200°C (material temperature). EM-891K has a Dk of 3.3 @1GHz and a Df of 0.002 @1GHz. Tg is 170C. Three month shelf life under controlled conditions. Compatible with most common oxide treatments.
Elite Material Co., emctw.com