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[Gerard Visser <gvisser AT indiana.edu>]

hi Mike,
	I think you should definitely proceed to get quotes, thanks. And make P/N 
changes as may be required for that.
	Specifically on the below, I don't find the original 0603L025YRHF on Littelfuse 
website even. Not sure what that is. 0603L025YR looks correct to me. The others 
are just the usual sort of packaging / leadfree suffix partnumber details, looks 
definitely fine (and if you find more such, just do I'd say). If you find 
anything substantial that has to change, e.g. due to stock availability, then we 
have to hear from Jianing.
        Sincerely,

                Gerard

On 12/4/2019 10:04 AM, Capotosto, Michael wrote:
> Gerard, Jianing,
>
>
> Due to the tight timeline, I was going to get quotes for a turnkey production 
> - The fab house orders the parts, PCBs, and does the assembly. A 10-day 
> turnaround for a small 4-layer board like this isn't uncommon.
>
> I'm going through the BOM again to make sure the parts are still available, 
> I'll attach the document.
>
> I'd like to make the following changes:
>         1. F1, F2 - Originally 0603L025YRHF - Change to 0603L025YR‎
>         2. R23 - Originally CRCW0402100RFKEA - Change to CRCW0402100RFKED
>         3. U3 - Originally TMP102AID - Change to TMP102AIDRLR
>
> Please let me know your thoughts on these changes.
>
>
> Thanks,
>       Mike
>
>
> -----Original Message-----
> From: Star-fst-l <star-fst-l-bounces AT lists.bnl.gov> On Behalf Of ???
> Sent: Wednesday, December 4, 2019 4:52 AM
> To: gerard visser <gvisser AT indiana.edu>
> Cc: star-fst-l AT lists.bnl.gov
> Subject: Re: [Star-fst-l] Weekly FST meeting - 12/5/2019 9:30am BNL time
>
> Hi Gerard,
>    I just finished the layout for v3.0 T-board, please find the gerber files 
> in the attachment or the following link. 
> (https://drupal.star.bnl.gov/STAR/blog/jndong/191204-gerber-files-t-board-v30)
>    Since the new year is approaching, I think it will take at least 4~5 weeks 
> for production in China after your final approval.
>
> Best,
> Jianing
>
> > -----原始邮件-----
> > 发件人: "Gerard Visser" <gvisser AT indiana.edu>
> > 发送时间: 2019-12-04 05:32:29 (星期三)
> > 收件人: star-fst-l AT lists.bnl.gov
> > 抄送:
> > 主题: Re: [Star-fst-l] Weekly FST meeting - 12/5/2019 9:30am BNL time
> >
> > hi Mike,
> >         I think if we truly need more than two or so T-boards for first
> > tests, then this is indeed a sensible approach. Modifying two or three
> > or so, testing everything, making any further changes anywhere (T
> > boards and hybrids) if needed
> > -- hopefully not -- infomed by _complete_ results (pedestals/noise and
> > cosmics) from that testing, and then going for production would maybe
> > be better. But I agree modifying many of the old design doesn't make much 
> > sense.
> >         Jianing, would the v3.0 layout be ready to fab, or more work needed
> > in your opinion?
> >
> >         Gerard
> >
> > On 12/3/2019 3:04 PM, Capotosto, Michael wrote:
> > > Zhenyu/Gerard and all,
> > >
> > > I just wanted to get a jump and get this suggestion out before the meeting. 
> > > I've spoken with John Hammond regarding the modifications required to the 
> > > current V2.1 T-Boards, and we agreed it will probably be a few hours of work 
> > > per board - removing the duplicate components, and adding worst case ~8 
> > > jumper wires, some of which need to cross to both sides of the board.
> > >
> > > If we create new gerbers to match the V3.0  T-Board schematic, we may be able 
> > > to do a fast turn turnkey run. Getting approximate quotes from Sierra 
> > > Circuits, who we've used for turnkeys before, it would be ~$2,600 to have 10 
> > > PCBs fabbed, and stuffed for an 8-day turn. If this is something that Jianing 
> > > and Gerard wouldn't have time to work on, John believes he can make the 
> > > changes to the gerbers directly, and send the files out, if Gerard approves 
> > > the changes listed.
> > >
> > > If we were to also make 10 "test stand cables" using the new "purple" cable, 
> > > we would be looking at ~$2,400.
> > >
> > > It would cost another ~$1,350 to attach these cables to the t-board.
> > >
> > >
> > >
> > > This would all come to a total of $6,350. We may be able to get this price down a 
> > > little bit if we got quotes from local fab houses as well, and by combining the job of 
> > > making 10 "purple cable" assemblies and assembling them to the pcb - this is 
> > > a rough number.
> > >
> > > I believe this may be a good option - we would have the new revision of the 
> > > board with no bodge wires, we'd be using the production cable and testing 
> > > with its dielectric properties, etc., a better representation of the final 
> > > product; but it may be a tight deadline if we need it by mid-January. If you 
> > > think this is something we'd be interested in pursuing I can start requesting 
> > > quotes and see if we'd be able to have more definite numbers by the meeting 
> > > on Thursday.
> > >
> > > Best,
> > >
> > > Mike Capotosto
> > >
> > > -----Original Message-----
> > > From: Star-fst-l <star-fst-l-bounces AT lists.bnl.gov> On Behalf Of Ye,
> > > Zhenyu
> > > Sent: Tuesday, December 3, 2019 1:00 PM
> > > To: star-fst-l AT lists.bnl.gov
> > > Subject: [Star-fst-l] Weekly FST meeting - 12/5/2019 9:30am BNL time
> > >
> > > Dear all,
> > >
> > > We will have a weekly FST meeting this Thursday 9:30am BNL time. The
> > > meeting agenda and bluejeans info can be found at
> > > https://drupal.star.bnl.gov/STAR/blog/yezhenyu/forward-silicon-track
> > > er-weekly-meeting
> > >
> > > 1. T-board and inner signal cable - Jianing Dong, Mike Capotosto,
> > > Gerard Visser Gerard is reviewing the changes to v2.1 T-board suggested by 
> > > Mike.
> > >
> > > 2. Mechanical Structure - Yi Yang, Han-sheng Li Updates on the
> > > status of mechanical structure fabrication and assembly, cooling
> > > soft tube compatibility test, and transportation box design
> > >
> > > 3. Module Assembly at Fermilab - Zhenyu Ye Updates on module
> > > assembly fixture/tooling design/fabrication
> > >
> > > 4. Simulation: Te-Chuan Huang, Krishan Gopal Updates from Te-Chuan
> > > on FST geometry modeling
> > >
> > > If there is anything else to report/discuss, please let me know.
> > >
> > > Best
> > > Zhenyu
> > > _______________________________________________
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