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  • 行业新闻新闻中心 > 行业新闻 > SMT贴片电子元器件区分方法    

    SMT贴片电子元器件区分方法

    点击数:1  发布日期:2019/5/17
    <p style="margin: 0px 0px 16px; color: rgb(68, 68, 68); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.5px;">随着SMT贴片技术向微型化、高效化发展,各类常用元器件也越来越小。常用的贴片电阻、贴片电感和贴片电容在外形上也就变得难以区分。那么又该如何快速区分常用的SMT贴片元器件呢?下面小编为您介绍SMT贴片电子元器件快速区分的方法。<p style="margin: 0px 0px 16px; color: rgb(68, 68, 68); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.5px;">贴片电感和贴片电容的区分:<p style="margin: 0px 0px 16px; color: rgb(68, 68, 68); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.5px;">(1)看颜色(黑色)——一般黑色都是贴片电感。贴片电容只有勇于精密设备中的贴片钽电容才是黑色的,其他普通贴片电容基本都不是黑色的。<p style="margin: 0px 0px 16px; color: rgb(68, 68, 68); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.5px;">(2)看型号标码——贴片电感以L开头,贴片电容以C开头。从外形是圆形初步判断应为电感,测量两端电阻为零点几欧,则为电感。<p style="margin: 0px 0px 16px; color: rgb(68, 68, 68); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.5px;">(3)检测——贴片电感一般阻值小,更没有“充放电”引发的万用表指针来回偏转现象。而贴片电容具有充放电现象。<p style="margin: 0px 0px 16px; color: rgb(68, 68, 68); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.5px;">(4)看内部结构——找来相同的元器件可以剖开元器件看内部结构,具有线圈结构的为贴片电感。<p style="margin: 0px 0px 16px; color: rgb(68, 68, 68); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.5px;">贴片电感和贴片电阻的区分:<p style="margin: 0px 0px 16px; color: rgb(68, 68, 68); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.5px;">(1)根据外形判断——电感的外形有多边形状,而电阻基本以长方形为主。当需要区分的元器件外形具有多边形,特别是圆形时,一般认定为电感。<p style="margin: 0px 0px 16px; color: rgb(68, 68, 68); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.5px;">(2)测量电阻数值——电感的电阻值比较小,电阻的电阻值相对大些。<p style="margin: 0px 0px 16px; color: rgb(68, 68, 68); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.5px;">贴片电容和贴片电阻的区分:<p style="margin: 0px 0px 16px; color: rgb(68, 68, 68); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.5px;">(1)看颜色——贴片电容多为灰色、青灰色、黄色,通常为比硬纸壳稍浅的黄色。有的贴片电容上没有印字,主要是其经过高温烧结而成,导致无法在其表面印字。<p style="margin: 0px 0px 16px; color: rgb(68, 68, 68); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.5px;">(2)看标志——贴片电容在电路中的符号为“C”,贴片电阻的符号为“R”。<p style="margin: 0px 0px 16px; color: rgb(68, 68, 68); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.5px;">(3)测量法——一般贴片电容的阻值很大,而贴片电阻相对较小。贴片电容具有充放电现象,而贴片电阻没有。<p style="margin: 0px 0px 16px; color: rgb(68, 68, 68); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; letter-spacing: 0.5px;">只要熟悉各种元器件的功能及型号,就能很快的区分各种外形相似的元器件了。
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