ec cu-lmts -status report- ulrich parzefall universität freiburg
DESCRIPTION
LMT Status Report, ID Week Sept 2005Ulrich Parzefall 3 Tape Production Status Production at Elgoline: –Running smoothly – D3 tapes shipped 19 Sept. –Deliveries on time and with LMT amounts as planned –Sufficient raw materials available –Some lamination problems, but can be overcome by manual rework –Yield > 90% Espanex stocks (etc) sufficient for whole production –D2 in production –Elgoline may not be able to stick to schedule for last batch D2 & D1 is very large batch – 70% more tapes Shipment will be split into two No impact on macro-assembly schedules expectedTRANSCRIPT
LMT Status Report, ID Week Sept 2005 Ulrich Parzefall 2
Intro: LMT Production ProcessElgolineProcessing
EtchingCutting to length
Lamination
2 weeks per batchR
unni
ngO
n sc
hedu
le
1 week
Taiwan(CSIST)
Solder PPF0 & PPF1Thermal cycling
QA
2 weeks per batch
Run
ning
1m
onth
late
Acc
eler
atin
g
QA sitesAssemble LMTs
to harnessesEl & length QA
2 weeks per batchR
eady
to g
o
QA sitesAssemble LMTs
to harnessesEl & length QA
2 weeks per batch
Run
ning
1 week
2 days Macro-
assemblyMacro-assembly
Inst
allin
g LM
Ts
LMT Status Report, ID Week Sept 2005 Ulrich Parzefall 3
Tape Production Status• Production at Elgoline:
– Running smoothly – D3 tapes shipped 19 Sept.– Deliveries on time and with LMT amounts as planned– Sufficient raw materials available– Some lamination problems, but can be overcome by
manual rework– Yield > 90%
• Espanex stocks (etc) sufficient for whole production– D2 in production – Elgoline may not be able to stick to schedule for last
batch• D2 & D1 is very large batch – 70% more tapes• Shipment will be split into two • No impact on macro-assembly schedules expected
LMT Status Report, ID Week Sept 2005 Ulrich Parzefall 4
Academia Sinica: CSIST• Start of LMT-assembly difficult
– Soldering technique modified from Al-LMTs, prototyping necessary– D9 took longer than expected, and was soldered by engineer
• D8 & D7 done– knowledge transfer (engineer -> operator) lead to reduced yield
(cold solder joints), and delays– Assembly of LMTs not “per disk” but from mixed disks
• D6 & D5– Production speed & yield increased
• Recent problems – PPF0 soldering on reflow station – fast but leads to delamination on
~5% of LMTs• Rate capacity of 1 disk/week announced. This has worked well
over last 2 weeks and would recover schedule.• Parts
– Recovery yield of PPF1.X much lower than initially expected– About 50 PPF1.3 & 200 PPF1.2 made & tested in Freiburg, mostly
shipped– Further 100 PPF1.2 & 200 PPF1.3 ordered
LMT Status Report, ID Week Sept 2005 Ulrich Parzefall 5
QA Results
• QA running smoothly• D9 through QA, with small problems
– Glasgow:• 1 open (repaired)• 2 delaminations fixed with Araldite
– Freiburg:• 1 open (repaired)• 1 short (rejected)
– D8 in QA, minor problems– Glasgow: OK– Freiburg:
• 1 with too high resistance (trace has 6k Ω, rejected)• D7 – 50% tested OK in Glasgow
LMT Status Report, ID Week Sept 2005 Ulrich Parzefall 6
News
• Jens Meinhardt left Freiburg University. He was developing backup soldering options, set up the QA in Freiburg, and drove PPF1.x production. Simon Eckert, Dieter Joos and U.P. will try to replace him.
• Freiburg LMT QA is done at NIKHEF. This minimises shipping risks & time, and reception tests. Freiburg staff commute to NIKHEF synchronised to LMT shipments.
LMT Status Report, ID Week Sept 2005 Ulrich Parzefall 7
Conclusions & Outlook• LMTs availability remains critical, but
improving• Increased delivery rate from Taiwan• Focus is still on LMT output CSIST
• Soldering backup in Freiburg: – In-house soldering possible but time-consuming and
difficult. Rework of shorts would be needed.– Preferred option is a process with industrial partner,
using mini-pcbs between LMT and PPF. Protoypes have been soldered successfully. This is only a backup option.