Datasheet
Thursday, 17 July 2003 MiniProject: Design Aspects Colin K McCord
EEE512J2 – Electronic Product Design Page 22 Chapter 4: Project Planning and Management
• Give tighter physical control of A items.
• Forecast A items more carefully.
Class B (say the next 40% of items): -
• A reorder cycle system could control this class.
Class C (Next 40% of items): -
• A two-bin or annual demand system could manage the final 40%.
The analysis requires items to be listed with their unit costs and annual volume. Judgment is needed on
critical items or security matter that Pareto analysis in itself does not reveal. Remember in assembly
situations where items from A, B and C are combined in an assembly, a C item out of stock can delay
production just as much as an A or B item.
4.3. Predicted Product Cost (Ball Park Assessment)
COMPONENTS OF COST
PARETO
MATERIAL
LABOUR
COST
OF
COMP
GEN
DET
ITEM
RAW
S/C
PROP
M/C
INSP
ASSY
0.2 ECG Amplifier £1 - £30 £3 £3 £3 £40.00
0.15 Battery pack and charger - - £22 - £8 - £30.00
0.13 Diathermy filter - - £22 - £4 - £26.00
0.6
0.12 12V
DC
power supply - - £20 - £4 - £24.00
0.11 Printed circuit board - - £10 - £6 £6 £22.00
0.065 ABS plastic outer casing - - £13 - - - £13.00
0.05 RS232 null modem cable - - £10 - - - £10.00
0.04 3 lead ECG cable - - £8 - - - £8.00
0.3
0.035 Microcontroller (PIC16F877) - - £7 - - - £7.00
0.03 Other PCB components - - £6 - - - £6.00
0.02 8k RAM Chip (M6264P) - - £4 - - - £4.00
0.01 Dual DAC (ZN508E) - - £2 - - - £2.00
0.01 Piezo alarm - - £2 - - - £2.00
0.008 7-segment LED Display X3 - - £1.60 - - - £1.60
0.006 X38-bit latch (74LS377) X3 - - £1.20 - - - £1.20
0.005 RS232 line buffer (max232) - - £1 - - - £1.00
0.005 330R Resistor Network X3 - - £1 - - - £1.00
0.003 AAMI standard 6-pin plug - - £0.60 - - - £0.60
0.1
0.003 9-way PCB D-type plug - - £0.60 - - - £0.60
- -
FINAL ASSEMBLY
- - - - - £5 £5.00
- -
FINAL INSPECTION
- - - - £5 - £5.00
SUB TOTALS £1 £0 £162 £3 £30 £14 £210
GROSS TOTALS £163 £47 £210
MANUFACTURING CONTINGENCY £105
MAXIMUM MANUFACTURING COST £315