|
 |
|
|
BASIC DATA
|
|
PCBs wave soldered per week
|
|
1,500
|
|
Average number of joints per PCB
|
|
100
|
|
Total opportunities per week
|
|
150,000
|
|
Defect rate (%)
|
|
0.025
|
|
Defects per PCB
|
|
0.0250
|
|
Defects per week
|
|
38
|
|
TOUCH UP AFTER INSPECTION
|
|
Percent of defects found and reworked at touch up (HMS)
|
|
50%
|
|
Number of defects found and reworked weekly at touch up
|
|
19
|
|
Cost of touch up per defect (HMS)
|
|
$3.00
|
|
|
WEEKLY COST OF TOUCH UP
|
|
$56
|
|
ANNUAL COST OF TOUCH UP
|
|
$2,925
|
|
REWORK AT FINAL TEST
|
|
Number of remaining defects per week after touch up
|
|
19
|
|
Percent of remaining defects identified and reworked at final test (HMS)
|
|
50%
|
|
Number of defects reworked per week at final test
|
|
9
|
|
Cost of rework per defect at final test (HMS)
|
|
$5.00
|
|
|
WEEKLY COST OF REWORK AT FINAL TEST
|
|
$47
|
|
ANNUAL COST OF REWORK AT FINAL TEST
|
|
$2,438
|
|
REPAIR OF FIELD FAILURES
|
|
Number of defects remaining weekly when PCBs are sent to field
|
|
9
|
|
Percent of defects in field which cause field failures (HMS)
|
|
50%
|
|
Number of defects in field which cause field failures
|
|
1
|
|
Cost of repair per defect causing field failure (HMS)
|
|
$85.00
|
|
|
WEEKLY COST OF REPAIR FIELD FAILURES
|
|
$80
|
|
ANNUAL COST OF REPAIR OF FIELD FAILURES
|
|
$4,144
|
|
COST OF INSPECTION, TOUCH UP, FINAL TESTING, REWORK AND REPAIR OF FIELD FAILURES
|
|
TOTAL WEEKLY
|
|
$183
|
|
TOTAL ANNUAL
|
|
$9,506
|
|
 |
|
