标准摘要
[中文适用范围]： 本部分IEC 61249规定了非卤素环氧编织E玻璃纤维层压板（厚度为0.05 mm至3.2 mm，具有规定的阻燃性（垂直燃烧试验），铜覆）的性能要求。玻璃化转变温度定义为最低150°C。相对介电常数等于或小于3.7，损耗因数在1 GHz时等于或小于0.0070。某些性能要求可能有几个性能等级。所需等级应在采购订单中指定，否则将供应默认材料等级。 [外文原描述]： IEC 61249-2-34:2009 specifies requirements for properties of non-halogenated epoxide woven E-glass laminate sheet of a thickness of 0,05 mm up to 3,2 mm, of defined flammability (vertical burning test), copper-clad. The glass transition temperature is defined to be 150 °C minimum. The relative permittivity is equal to or less than 3,7 and the dissipation factor is equal to or less than 0,0070 at 1 GHz.
英文名称Materials for printed boards and other interconnecting structures - Part 2-34: Reinforced base materials, clad and unclad - Non-halogenated modified or unmodified resin system, woven E-glass laminate sheets of defined relative permittivity (equal to or less than 3,7 at 1 GHz) and flammability (vertical burning test), copper-clad