LSI Productivity Improvement Project

Title : Improve test socket repair methodology

Before After

Test socket pins direct solder to PCBImprovement test socket with extra NP Adapter layer & pins direct solder to PCB. No test socket pins direct solder to PCB.

NP Adapter

LSI Productivity Improvement Project

No desoldering pins

Repair time reduce to 1hr per socket

Everyone can do

Printed circuit board will not spoil because no desoldering apply

Approach : Improve test socket repair methodology

　　　　　 　

Before After

Repairing test socket need to desoldering pins

Repair time is average 8 hrs per socket

Only technical skillful people can do

Printed circuit board easily get spoil during desoldering & soldering process

LSI Productivity Improvement Project

Before After

　　　　　　　　　　　　　　　　　　　　　 　Previous Cost : Expected Forecast Reduction ：

Repairing Cost per socketMan-hour = 8 hour x S$15 = S$120.00Pin cost = 88 pins x S$1.30 = S$115.00Total cost = S$235.00

Yearly average 10 sockets repair Total cost = 10 X S$235.00 = S$2,350.00

Buy new Socket Cost2011 production order new socket = 2 pcs per year X S$2,500 = $5,000.00

Engineer Repair TimeRepair time 2011 monthly average = 40 hrs

Man-hour cost per year = 40 hrs X S$15 X 12 = S$7200.00

Forecast Repairing Cost per socketMan-hour cost = 1 hour x S$15 = S$15.00Forecast average pin repair cost :- 5 faulty pins x S$1.30 = S$13.00 Total cost = S$28.00

Forecast yearly average 10 sockets repair Total cost = 10 X S$28.00 = S$280.00

Forecast Buy New Socket CostExpected zero 2012 production order new socket = 0 pcs X S$2,500 = S$0.00

Forecast Engineer Repair TimeRepair time 2012 monthly average (Feb-Apr) = 13 hrs Man-hour cost per year = 13 hrs X S$15 X 12 = S$2340.00

S$2620/year

Saving / yr =S$ (14550-2620) = S$11930

S$14550/year

　 Tangible Cost savings for AN41917A/21A QFN44 product ( Implement test socket repair methodology )

LSI Productivity Improvement Project　　　　　 　 Other Cost savings

Forecast Intangible Cost Saving ： Average Per device Saving / yr ( Repair & New Order) = S$1000

　　　 Forecast saving / yr =S$ (1000 X 31) = S$31,000.00

　　　　　　　　　　 　Below are the list of QFN OS & F-Test potentially products which able to apply the new improvement test socket repair methodology solution.

QFN - OS QFN – F-Test

QFN016 X 4AN12973A, AN30108A, AN8742FHNEBV, AN49240A

QFN020 X 2AN22210A, AN22211A

QFN028 X 7AN18400A, AN18400B, AN18401A, AN18403A, AN18403B, AN18404UA, AN22202A

QFN044 X 10 AN32058A, AN41905A, AN41908A, AN41909B, AN41917A, AN41919A, AN41921A, AN6591BFJMVB, AN6597FJMEBV, NN29180A

QFN016 X 3AN32180A AN30108AAN49240A

QFN028 X 1AN32181B

QFN044 X 4AN41905AAN41908AAN41909BAN41919A

Total 23 devices Total 8 devices

LSI Productivity Improvement Project　　　　　 　 Other Cost savings

　　　　　　　　　　 　Below are the list of SOB F-Test potentially products which able to apply the new improvement test socket repair methodology solution.

SOB – F-Test

SSONF10D X 2AN8016NSH, MIP816

SSONF16D X 4AN31910A, AN7494SA, AN8017SA, AN8018SA

SSONF24D X 3AN18161B, AN18101A, AN49239

SSONF32D X 19AN17140A, AN22000A, AN22002A, AN22004A, AN44050A, AN44051A, AN5832SA, AN8399SA, AN8746SA, AN41051A, AN44020A,AN44030A, AN44010A, AN44015A, AN8471SA, AN44062A, AN44063A, AN44064A, AN44066A

USONF36D X 6AN44023SB, AN6196SB, AN6317SB, AN6383SB, AN6384SB, AN8882SB,

Total 34 devices

Forecast Intangible Saving Cost ： Average Per device Saving / yr ( Repair & New Order) = S$1000 　　　 Forecast saving / yr =S$ (1000 X 34) = S$34,000.00