Description

<p style="text-align:center;margin:0px;padding:0px 0px 20px;border:0px;outline:0px;box-sizing:initial;line-height:20px;font-size:14px;font-family:Arial, &#39;microsoft yahei&#39;, &#39;Times New Roman&#39;, &#39;\5 b8b\4 f53&#39;;white-space:normal;background-color:#FFFFFF;"><br/></p><p style="margin:0px;padding:0px 0px 20px;border:0px;outline:0px;box-sizing:initial;line-height:20px;font-size:14px;font-family:Arial, &#39;microsoft yahei&#39;, &#39;Times New Roman&#39;, &#39;\5 b8b\4 f53&#39;;white-space:normal;background-color:#FFFFFF;"> Here are some wiring rules for&nbsp;components:</p><p> 1. The distance from the wiring area to the PCB board edge cannot exceed 1mm, and the wiring is prohibited 1mm around installation hole</p><p> 2. The power wire should be as wide as possible and not be less than 18mil; signal line width should not be less than 12mil; cpu input the output line should not be less than 10mil (or 8mil); line spacing is not less than 10mil;</p><p> 3. The normal through-hole is not less than 30mil;</p><p> 4, Dual in-line: pad 60mil, aperture 40mil;</p><p> 1 / 4W resistance: 51 * 55mil (0805 surface); pad 62mil, aperture 42mil;</p><p> Promise capacitance: 51 * 55mil (0805 surface); pad 50mil, aperture 28mil;</p><p style="margin: 0px; padding: 0px 0px 20px; border: 0px; outline: 0px; box-sizing: initial; line-height: 20px; font-size: 14px; font-family: Arial, &quot;microsoft yahei&quot;, &quot;Times New Roman&quot;, &quot;\5 b8b\4 f53&quot;; white-space: normal; background-color: rgb(255, 255, 255);"> 5. The power and ground wire should be as radial as possible, and the signal line can not appear loop alignment.<span style="text-align:center;"></span> </p><p style="margin: 0px; padding: 0px 0px 20px; border: 0px; outline: 0px; box-sizing: initial; line-height: 20px; font-size: 14px; font-family: Arial, &quot;microsoft yahei&quot;, &quot;Times New Roman&quot;, &quot;\5 b8b\4 f53&quot;; white-space: normal; background-color: rgb(255, 255, 255);"><img src="https://file.allpcb.com/bbs/17/05/16/150229449.jpg" alt="" style="font-family: Arial, &quot;microsoft yahei&quot;, &quot;Times New Roman&quot;, &quot;\5 b8b\4 f53&quot;; font-size: 14px; text-align: center; white-space: normal;"/></p>