PCB设计制作封装的详细步骤（蓝牙音箱案例实操图）
本文以蓝牙音箱为案例详细讲解PCB设计中焊盘设计和放置建封装步骤:确定封装类型-焊盘设计-放置焊盘-添加安装外框-添加丝印-添加器件摆放区域-添加文字信息
https://bdn.135editor.com/uploadword/201807/5b3dc59e-be70-4c13-82cd-600cac10006b.jpg
一、确定封装类型
根据提供规格书和器件规格型号确定封装类型
1、完整的规格型号（三视图）
https://bdn.135editor.com/files/users/161/1613295/201807/3KuARfwA_t5NC.pnghttps://bdn.135editor.com/files/users/161/1613295/201807/JjGssPv5_OuFO.pnghttps://bdn.135editor.com/files/users/161/1613295/201807/GIV8jS7d_qq6S.png
2、规格书的参数
https://bdn.135editor.com/files/users/161/1613295/201807/LDuakNW7_cFYt.png
二、建立焊盘设计
1.首先打开Pad Designer，更改单位—milimeter
https://bdn.135editor.com/files/users/161/1613295/201807/Fnyd4sxM_2CMz.png
2.点击layer，根据如下步骤
Regular Pad(规则焊盘)，Thermal relief(花焊盘，热风焊盘)，Antipad（反焊盘）
https://bdn.135editor.com/files/users/161/1613295/201807/yDMueceA_DBPZ.png
3.将 soldermask/pastemask层的参数与begin layer层面一样，
soldermask 层面焊盘会比实际焊盘大0.1mm
https://bdn.135editor.com/files/users/161/1613295/201807/SnTju78D_ynIp.png
4.将文件保存，命名规范需注意：贴片/通孔+类型+宽（小数点用d表示）x长+单
https://bdn.135editor.com/files/users/161/1613295/201807/p3F2bTNY_VdNA.png
四、放置焊盘
1.新建一个package symbol
https://bdn.135editor.com/files/users/161/1613295/201807/8s4ZX5Pv_UYxs.png
2.将路径更改成pad的放置路径
https://bdn.135editor.com/files/users/161/1613295/201807/EGU7MLsc_Kqez.png
3.devpath/padpath/psmpath三个路径都需要更改成一样
https://bdn.135editor.com/files/users/161/1613295/201807/LVEq9znX_S3e8.png
4. setup—design parameter ,将单位更改成millimeter，显示原点
https://bdn.135editor.com/files/users/161/1613295/201807/BGGOwcbk_PFtP.png
https://bdn.135editor.com/files/users/161/1613295/201807/dcp94FhC_hrWW.png
5. 更改格点，setup—grids选用0.254，如右图
https://bdn.135editor.com/files/users/161/1613295/201807/a7RrNV5O_KnRV.png
6.在layout菜单下，进入pin的命令
https://bdn.135editor.com/files/users/161/1613295/201807/vemC7Tq6_2gY9.png
如下参数进行修改
https://bdn.135editor.com/files/users/161/1613295/201807/6ptL8JGc_FeKL.png
7.在提示框输入坐标 x 0 0 点击回车，如右图效果图
https://bdn.135editor.com/files/users/161/1613295/201807/2ZqV7r3D_ZL9p.png
8.在edit—text命令下，更改pinnumber
https://bdn.135editor.com/files/users/161/1613295/201807/yTenHRGW_6BsH.png
将原点更改到所有pin的中心即可
以上即为本期讲解内容，下期继续讲解封装建立的剩余操作步骤，关注快点学院订阅号了解更多PCB设计专业知识。
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