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文件内容
| DIN DIN EN 61249-2-31 |
2007-JUL-01 • 待定/草稿 •
(DRAFT) Materials for printed boards and other interconnecting structures - Part 2-31: Reinforced base materials clad and unclad for high frequency application - Halogenated modified or unmodified resin system, woven E-glass laminated sheets of defined relative permittivity (equal or less than 4.1 at 1 GHz) and flammability (vertical burning test), copper-clad (IEC 91/671/CDV:2007); German version prEN 61249-2-31:2007
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