IEC 61249-2-43:2016标准适用于印制电路板和其他互连结构的增强基材。该增强基材是一种非卤素环氧纤维素纸/编织E玻璃增强层压板，铜覆盖，用于无铅组装。该标准规定了该材料的垂直燃烧测试方法和定义的可燃性。

该标准要求该材料必须符合以下要求：

1. 垂直燃烧测试：该材料必须通过垂直燃烧测试，符合UL 94 V-0级别的要求。

2. 定义的可燃性：该材料必须符合定义的可燃性要求，即在垂直燃烧测试中，材料的燃烧速率必须小于50mm/min。

此外，该标准还规定了该材料的物理和机械性能要求，如弯曲强度、剪切强度、拉伸强度等。

相关标准
- IEC 61249-2-21:2013 Materials for printed boards and other interconnecting structures - Part 2-21: Reinforced base materials clad and unclad - Non-halogenated epoxide woven E-glass reinforced laminate sheets of defined flammability (vertical burning test), copper-clad for lead-free assembly
- IEC 61249-2-22:2013 Materials for printed boards and other interconnecting structures - Part 2-22: Reinforced base materials clad and unclad - Non-halogenated epoxide non-woven E-glass reinforced laminate sheets of defined flammability (vertical burning test), copper-clad for lead-free assembly
- IEC 61249-2-23:2013 Materials for printed boards and other interconnecting structures - Part 2-23: Reinforced base materials clad and unclad - Non-halogenated epoxide glass fabric reinforced laminate sheets of defined flammability (vertical burning test), copper-clad for lead-free assembly
- IEC 61249-2-24:2013 Materials for printed boards and other interconnecting structures - Part 2-24: Reinforced base materials clad and unclad - Non-halogenated epoxide glass mat reinforced laminate sheets of defined flammability (vertical burning test), copper-clad for lead-free assembly
- IEC 61249-2-42:2016 Materials for printed boards and other interconnecting structures - Part 2-42: Reinforced base materials clad and unclad - Non-halogenated epoxide woven E-glass reinforced laminate sheets of thermal conductivity (vertical thermal conductivity test), copper-clad for lead-free assembly