PCB工程问客中英文对照.pdf

PCB 工程问客中英文对照 1) 线路和铜皮距外形很近，锣板后或V-CUT 后会露铜 The circuits and copper planes are very close to outline and V-cut. If follow Gerber, the circuits will be damaged and copper will be exposed after profiling. 建议：将线路适当向单元内移动、削减铜皮，确保它们离外形**mm. Suggestion: Move the circuit and shave the copper properly to keep them(**mm) away from outline. 2)GERBER 异常：xx 面发现一些无终止PAD 的线，请回复如何制作？ We find some circuits without terminated pads on XX side. 3)隔离线宽度太小，易造成内层短路 In Gerber data the separated line width is 8mils in layer 3. It is so narrow that shorten maybe happened. 建议:将第3 层8mil 的隔离线宽加大到15mil Suggestion: For safety we will shave copper to get 15mils clearances between two copper planes to avoid shorten happened. 4)方便产线操作,要求取消内层线路独立PAD Please confirm we can remove the isolated pads in inner layers. 5)PTH 孔线路PAD 太小，我司用酸性蚀 艺无法制作 建议：将PTH 孔的PAD 加比孔单边大0.2mmr For better continuity between via pads and holes, we would like to add teardrops to via holes. 6)光点脱落 In order to protect the fiducial marks in isolated areas from peeling off 建议：给独立的Fiducial Mark 加保护环 Suggestion: we would like to add protective rings to them. Details see the following: 7)孔的属性未指定 The attributions of holes were not specified. 建议:A)做NPTH B:做PTH 孔,线路PAD 的尺寸和同类孔的PAD 的尺寸一样大. 8)孔径公差未指定 Since the tolerances of hole were not specified. 建议:PTH 孔按+/-0.08mm ,NPTH 按+/-0.05mm Suggestion: We will build them as follows:PTH: +/-0.08mm NPTH:+/-0.05mm. Slot length: +/-0.10mm 9)PTH 钻在铜皮上