在用altium designer绘制PCB时,用via做金属化过孔有两个参数,分别是diameter和hole size,求助各位这两个参数分别代表什么含义,对电路有什么影响?比如电流载流量,via造成的阻抗等等,谢谢! diamete表示过孔外径,hole size表示过孔内径。10mil的孔20mil的pad对应20mil的线过0.5A电流,20mil的孔40mil的焊盘对应40mil的线过1A电流,0.5oz 那外径和内径之差,比如10mil...
AD 画板过孔尺寸设置含义(diameter 和 Hole size) 求教AD 画板过孔尺寸设置的含义PCB一般的加工流程是先钻孔然后镀铜,如下图AD的孔尺寸设置包括diameter 和 Hole size两个参数,具体的含义?Diameter是钻孔直径么? Hole huashengzi 2022-02-28 16:55:03 ...
AD 画板过孔尺寸设置含义(diameter 和 Hole size) 求教AD 画板过孔尺寸设置的含义PCB一般的加工流程是先钻孔然后镀铜,如下图AD的孔尺寸设置包括diameter 和 Hole size两个参数,具体的含义?Diameter是钻孔直径么? Hole huashengzi 2022-02-28 16:55:03 ...
pcb过孔尺寸问题 过孔大小的尺寸选择,过孔太小可能担心会影响信号的连接,太大了给人感觉过于粗糙,视觉效果不佳,结合做板的经验以及视觉效果,参数Diameter37mil--》39.37mil--》40mil之间 ,Hole size18mil--》19.685mil--》22mil之间,视觉效果较好。一般不要选用默认参数,例如Diameter 50mil,Hole size 28mil,这样...
PCB一般的加工流程是先钻孔然后镀铜,如下图AD的孔尺寸设置包括diameter 和 Hole size两个参数,具体的含义? Diameter是钻孔直径么? Hole size 是镀铜以后的内径么?(还是 hole size 是钻孔直径?) 如果Diameter是钻孔直径, Hole size 是镀铜以后的内径,那么我没有设置任何的pad,也没有设置pad尺寸的情况下,看上去有...
Aspect ratio is the ratio between the minimum hole diameter and overall thickness of the board. For example; if the board thickness is 1.60mm and the minimum hole size is 0.40mm, then the aspect ratio is said to be 1:4 according to IPC, however when you change to a ticker PCB like...
Please use the drill diameter for the via hole, not the finished hole diameter as in the Via Properties calculator. Ref Plane Opening H / W: Enter the opening size or anti-pad size for the via pads. Full Plane Opening: Use this checkbox if you prefer to have a full opening for the ...
Hole size:Always use the recommended hole size for the lead diameter of the part. Through-holes that are too big will not capture the molten solder, resulting in a poor solder joint, while holes that are too small may not allow the part's lead to be inserted. ...
going back to the 20/10mil via and let's assume we would like to have clearance of 9mil from the finished hole size (inside diameter) then our antipad would be 28mil - (10mil finished hole) + (9mil x 2 clearance). Additionally, if the via has a pad around the barrel at a spe...
Utilize dedicated vias for each pin of a component. To reduce parasitic inductance in RF PCB designs, minimize the diameter of vias, aiming for typical diameters within the range of 0.2 mm (8 mils) to 0.4 mm (16 mils) or smaller. ...