YDT741-2002通信设备过电流保护用正温度系数(ptc)热敏电阻器技术要求.pdfVIP

11u 中华人民共和国通信行业标准 YD/T741- 2002 代替 YD/T 741- 1995 一 通信设备过电流保护用正温度系数(1rC) 热敏电阻器技术要求 SpecificationofPositiveTemperatureCoefficient(PTC)thermistorsforthe over-currentprotectionofcommunicationsinstallations 2002-07-22发布 2002-07-22实施 中华人民共和 国信息产业部 发布 YD/T 741-2002 目 次 前 言···················································，·····························································…… 川 1 范围·································································，·········································…… 1 2 规范性引用文件· ·········································································… … 1 3 术语和定义 ···································································································…… 1 4 使用环境条件·······················································，············……，……，.2 5 产品分类··················································，·················································…… 2 6 技术要求 ···································································、····································…… 2 7 电气性能试验方法·····························································································…… 6 8 环境试验方法····························································································.…… 8 9 检验规则 ··································，········································，·····························…… 9 10标志、包装、贮存和运输·，···············································，.·.··········.……，……11 标准分享网 免费下载