PCB专业术语名词解释A50.ppt

印制电路：printed circuit 印制线路：printed wiring 印制板：printed board 印制板电路：printed circuit board (pcb) 印制线路板：printed wiring board(pwb) 印制元件：printed component 印制接点：printed contact 印制板装配：printed board assembly 板：board 10. 单面印制板：single-sided printed board(ssb) 11. 双面印制板：double-sided printed board(dsb) 12. 多层印制线路板：mulitlayer printed wiring board13. 刚性印制板：rigid printed board14. 刚性单面印制板：rigid single-sided printed board 15. 刚性双面印制板：rigid double-sided printed board17. 刚性多层印制板：rigid multilayer printed board 9.基材：base material 10. 层压板：laminate 11. 覆金属箔基材：metal-clad bade material 12、 覆铜箔层压板：copper-clad laminate (ccl) 13、 单面覆铜箔层压板：single-sided copper-clad laminate 14、 双面覆铜箔层压板：double-sided copper-clad laminate 15、 复合层压板：composite laminate 16、 薄层压板：thin laminate 17、 金属芯覆铜箔层压板：metal core copper-clad laminate 18、 金属基覆铜层压板：metal base copper-clad laminate PTH NPTH SMT Dummy Text Pad/Breaking Tab Thermal/Clearance S/M bridge Gold finger/Key slot/Beveling Blind/Buried hole Aspect ratio Motherboard If this specification conflicts with any other documents the following order of precedence shall apply: a)???????? Purchase order b)??????? Printed wiring board drawings and drill and trim documentation c)??????? This specification d)??????? Documents referred to in this speciation.? ? Supplier shall use applicable fabrication panel coupon as defined in IPC-2221.Micro-sections coupon ,and solder samples shall be provided with each shipment for validation requirement. 1.???????? Maximum 3 repair operations are allowed on each board and the number of repaired PCB’S cannot exceed the 10 percent of the entire lot population.? ? 2.???????? Unless otherwise specified on the engineering drawing ,plated through via holes with a nominal size of 0.020inch or less may be partially or completely plugged with solder.? ? 3.???????? As a preventive precaution .before the laying down of the solder ,the PCB’S will have to be washed to remove the residuals due to the production process,