Title: ????????:???????DPMO?????YT?????YR?Z-???? ?
1?04? ??????
24.1 ??
- ???????????????DPMO?????YT?????YR?Z-???? ?
- ??????????????,????????????????????
- ??????????????????Z??,??Z??????????????
- ?????????????,???????????????????????????,????????
???????????????????
3????????
44.2 ????
- ?????????????DPMO?????YT?????YR?Z-??? ?
- ??????????????????????????,???????????????
- ????????????????,???????????????
54.2.1 ???????
- ????????(Opportunity, O),????????????????
- ???O????U,??????TOP (Total Opportunities),??????
(Defect Per total Opportunities) DPO D/TOP? - ???????(Defects Per Million Opportunities,
DPMO)?????????????????
6PCBA
- 500??????????????,?????1260?????????PCBA,?????????
????(?????????????)???,DPMO???????????????????????
?
7??4.1
8??4.1 (2)
(1) ???????
(2) ??DPMO???
94.2.2 ????
- ??? U 200?????? D 190???????,?????????? Y
95? - ?????????,????(yield)????????????????
- ?????????????????????,???YT?????????????????????
- ?????YT?,??(5-2)???,???????????,??????????lT?
- ?????????????????????????w?
10??4.2
(1) ??????????
(2)??????????
114.2.3 ????
- ???? ??????????????????????? ?
- ?????????n?,??i-?????(YT)i ,??????YR?????????????
?YR Pi(YT)i? - ????????????????
- ?????????????????
12??4.3
13??4.3 (2)
(1) ??????????
(2)????????
14??4.4
15??4.4 (2)
(1) ???????????????
(2)???????????
(YT)i e?i,0.9905?0.9156??0.9293,YR Pi(YT)i
0.4777
(3)??????????
YT 10vYR 0.9288
(4)???????????
l e(YT) 0.0739
164.2.4 Z??
- ?????Y?,?????????????Z???
- ????????? ?,??????Z?? ?
- ??Z?ZEQ F-1(Y)?
- ??Z?ZLT ZEQ ,??Z?ZST ZLT 1.5?
- ?Z????ppm,ppm 106F(-Y)?
17??4.5
18??4.6
194.3 ????
- ????????????????
- ????6Ms????Men?????Methods?????Materials?????Mac
hines?????Measurements?????Mother natures??
20?????
- ????????????????
- ????????????????????
- ?????????????????????
- ???????????,???????????????
- ?????????????,??????????????????
- ???????????,???????????????????,??????????????????
???
214.3.1 ????
- ???? ?????????,??????????Rbar/d2??sbar/c4?????shat
? - ???? ????????????,??????
22??????
- ???? ?????,????????6sR???????????????CP,?????CA,??
????CPK? - ???? ????????6ss???????????????PP,?????PA,??????PP
K?
234.3.2 ????CP
- ?? ??????????????????
- ???? ??????,??USL???LSL??????T????????????????????
???????????????
24????
- ????(Nominal The Best, NTB) ????m??????USL?LSL???,
????????????,CP?????????????????,CP??????
25????
- ???LSL???????(Largest The Best, LTB)
- ???USL???????(Largest The Best, LTB)
264.3.3 ????CA
- ????CA????????????????????????????????????????,???
?????? - ?????CA??1.0 ?
- ?????
274.3.4 ????CPK
- ???????CPK?(Process capability)???????????????????
??????? - ???? ?
- ???? ? CPK CP?
- ???? ?
28??4.79
29??4.1011
304.3.5 ????
- ????PPk???????????????????????????????????????????
??,????????????????????
????(1)????(2)????(3)????
????
????
314.3.6 ???????
- ????CPK?PPK???????????????????????
- ???????????????????????? ?
32????
33??4.12
?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
1 36 35 34 33 32
2 31 31 34 32 30
3 30 30 32 30 32
4 32 33 33 32 35
5 32 34 37 37 35
6 32 32 31 33 33
7 33 33 36 32 31
8 23 33 36 35 36
9 43 36 35 24 31
10 36 35 36 41 41
11 34 38 35 34 38
12 36 38 39 39 40
13 36 40 35 26 33
14 36 35 37 34 33
15 30 37 33 34 35
16 28 31 33 33 33
17 33 30 34 33 35
18 27 28 29 27 30
19 35 36 29 27 32
20 33 35 35 39 36
34??4. 12 (2)
?? L 24, U 50, m 37, T 26, ?? s 2.66?
35??4. 12 (3)
36??4. 12 (4)
?????????CPK 1.19,???????PPK 0.90???ZST
6.17,???ZLT 4.66,????1.51?????ppmT 1690
169 ,?????ppmT 34012 3403,????20??
37????
- ??? ??n-1????????,??c2(a,n)?????????
?????
38CPK??????
394.4 ??????
- ??????????????????CP?2.0?CPK?1.5??????????!
- ????????mT DT 438 0.5?
40??????
- ????????????m1 D1?m2 D2?m3 D3?m4 D4?m5
D5?
????sT2 s12 s22 s32 s42 s52 5D2/9
.0056 ? ??? PPK (USL- LSL)/6sT (478.5-
474.5)/60.075 2.24!