IEC 61249-2-26:2005 标准规定了一种非卤素环氧树脂增强的玻璃纤维增强层压板，用于制造印制电路板和其他互连结构。该标准涵盖了铜覆盖和非铜覆盖的增强基材，并规定了其垂直燃烧测试的定义可燃性等级。

该标准要求增强基材必须符合特定的物理、机械和电气性能要求。其中，物理性能包括厚度、密度、吸水率、热膨胀系数等；机械性能包括弯曲强度、弯曲模量、拉伸强度、剪切强度等；电气性能包括介电常数、介电损耗、表面电阻等。此外，该标准还规定了增强基材的垂直燃烧测试要求，包括定义可燃性等级、燃烧时间、燃烧长度等。

该标准还规定了铜覆盖的增强基材的要求。其中，铜箔的厚度、表面处理、附着力等必须符合特定的要求。此外，该标准还规定了铜覆盖的增强基材的表面处理要求，包括化学镀铜、电镀铜、镀锡等。

IEC 61249-2-26:2005 标准的制定旨在提高印制电路板和其他互连结构的可靠性和安全性。该标准的应用范围广泛，适用于电子、通信、航空航天、军事等领域。

相关标准
- IEC 61249-2-21:2003 Materials for printed boards and other interconnecting structures - Part 2-21: Reinforced base materials clad and unclad - Non-halogenated epoxide woven E-glass reinforced laminated sheets of defined flammability (vertical burning test), copper-clad
- IEC 61249-2-22:2003 Materials for printed boards and other interconnecting structures - Part 2-22: Reinforced base materials clad and unclad - Non-halogenated epoxide non-woven/woven E-glass reinforced laminated sheets of defined flammability (vertical burning test), copper-clad
- IEC 61249-2-23:2003 Materials for printed boards and other interconnecting structures - Part 2-23: Reinforced base materials clad and unclad - Non-halogenated epoxide non-woven/woven E-glass reinforced laminated sheets of defined flammability (vertical burning test), non-copper-clad
- IEC 61249-2-24:2003 Materials for printed boards and other interconnecting structures - Part 2-24: Reinforced base materials clad and unclad - Non-halogenated epoxide woven E-glass reinforced laminated sheets of defined flammability (vertical burning test), non-copper-clad
- IEC 61249-2-25:2003 Materials for printed boards and other interconnecting structures - Part 2-25: Reinforced base materials clad and unclad - Non-halogenated epoxide non-woven/woven E-glass reinforced laminated sheets of defined flammability (vertical burning test), non-copper-clad