NF C61-743-321*NF EN 61643-321:2002 Components for low-voltage surge protective devices - Part 321 : specifications for avalanche breackdown diode (ABD)
2002NF C61-743-321*NF EN 61643-321:2002 Components for low-voltage surge protective devices - Part 321 : specifications for avalanche breackdown diode (ABD)