????
??pcb??????????
???????????x / y?z???pcb???,????????????????????????pcb?????????,?????pcb????????????
ipc-6012???????????????0.75%,????????????????????0.5%????????????ipc??,????????
????????????:
1. pcb??:????,pcb?????????????????????,???????
2.??:??????????,??pcb??????????????
3.????????????????????????,??????????????????????
6.????????????????????,???????????????
7.???????,??????,?????????????????
8.?????????????????????,????????????????????
ipc-6012???????????????0.75%,????????????????????0.5%????????????ipc??,????????
????????????:
1. pcb??:????,pcb?????????????????????,???????
2.??:??????????,??pcb??????????????
3.????????????????????????,??????????????????????
6.????????????????????,???????????????
7.???????,??????,?????????????????
8.?????????????????????,????????????????????
???????smt????:????????????pcb?????,????gerber?????????????
????????????,???????????????????pcb??????????????????????
????:
- ??pcb?????????
- ?????? ? ??pcb??????...
- ????pcb????????????
- ????????????????????...
- ????????????????
- pcb:smt????
- ????pcb?????????
- ????????????????????...
- ???????pcb???
- fr-4????????????????
????
????
???:pcba?? ;pcba?? smt?? ???? ?????? smt??????
??:?????????????????????????b7?2~3?
????©???????????????
????:
??:???????
????