LST EN 61643-321-2003 Components for low-voltage surge protection devices - Part 321: Specifications for avalanche breakdown diode (ABD) (IEC 61643-321:2001)
2003LST EN 61643-321-2003 Components for low-voltage surge protection devices - Part 321: Specifications for avalanche breakdown diode (ABD) (IEC 61643-321:2001)