The E-Class Series of SurgeGuard Lightning Arrestors from NexTek, Inc. have been designed to optimize RF performance at frequencies up to 6 GHz. The series provides bi-directional protection, and it passes DC without any performance degradation. This series was developed to meet the demands of RF applications including Ultra Wideband, Wi-Fi, WiMAX, ground penetrating radar, surveillance, high-speed communications systems, 5.0-GHz to 6.0-GHz UNII, MMDS, WLL, ISM bands, public safety 4.9 GHz, and HiperLAN. It is based on a gas discharge tube design packaged in two small-geometry form factors designated PTCONFSAF09e and PTCONxONF09E. The miniature PTCONxONF09E arrestors measure 42 mm x 24 mm; the PTCONFSAF09e measure 50 mm x 24 mm. More product information is available on the NexTekwebsite.