21 ?2011 littelfuse, inc. speci?cations are subject to change without notice. please refer to www.littelfuse.com/spa for current information. tvs diode arrays (spa ? family of products) revision: april 14, 2011 sp1001 series sp1001 general purpose esd protection - sp1001 series description zener diodes fabricated in a proprietary silicon avalanche technology protect each i/o pin to provide a high level of protection for electronic equipment that may experience destructive electrostatic discharges (esd). these robust diodes can safely absorb repetitive esd strikes above the maximum level speci?ed in the iec 61000-4-2 international standard ( level 4, 8kv contact discharge) without performance degradation. their very low loading capacitance also makes them ideal for protecting high- speed signal pins. pinout functional block diagram features t - p x d b q b d j u b o d f p g q ' (typ) per i/o t & |