[halla_compton] [EXTERNAL] e-detector QWAD adapater Fwd: FW: Assembly quotation for order W73507AST5

[Michael Gericke]

Hello,

We have a quote for the adapter boards. The lead time on the boards is 2 
weeks (see Jie's message below).
The questions that need to be answered are whether we should go ahead 
with making just the boards and
then putting the components on at JLab, or if we should have them all 
done with one set resistors now and
change them later as needed. Also, the question as to whether the boards 
can be made faster at JLab, giving
time to make a test board first, is still open.

Please let us know how we should proceed. Juliette: the cost to the 
grant is around $2k.

Michael

--
Michael Gericke (Ph.D., Professor)

Physics and Astronomy
University of Manitoba
30A Sifton Road, 213 Allen Bldg.
Winnipeg, MB R3T 2N2, Canada



-------- Forwarded Message --------
Subject: 	FW: Assembly quotation for order W73507AST5
Date: 	Mon, 28 Oct 2019 09:18:19 -0500
From: 	Jie Pan <Jie.Pan at umanitoba.ca>
To: 	Michael Gericke <mgericke at physics.umanitoba.ca>



Hi Michael,

After a few back and forth on the manufacture files over the weekend, 
the PCB company now gives an quote on PCB and assembly. The total cost 
is ~US$2000 for 20 boards. The parts themselves cost are about $45 per 
board (see the attached BOM, in which the DB50 connector is the most 
expensive part).

The PCB takes about 2 weeks to make, while the assembly probably depends 
on when we will give them a reply on if we will proceed the making or 
not. Anyway, they are waiting for the reply and we shall make a decision 
asap.

For the assembly, we need give the final values of the resistors in the 
BOM. I am not sure about that, though. The resistors determine the 
signal and noise level at the discriminator input, should be 
detector-dependent. We don’t have a JLab thin silicon strip detector 
here, hence cannot verify the values by experiment. We may simply use 
100K resistors for now so that the manufacture can start quick 
production, but the resistors might need to be replaced in the future at 
JLab.

Anyway, please advise me how to proceed. Thanks!

Jie

*From: *julia.pcbway <mailto:julia at pcbway.com>
*Sent: *October 28, 2019 5:12 AM
*To: *Jie Pan <mailto:Jie.Pan at umanitoba.ca>
*Subject: *Assembly quotation for order W73507AST5

Hello,

For assembly order W73507AST5, here attached the BOM we quoted,  please 
kindly check and confirm especially those comments in red color showed.

For pcb, there is 0.7mm blind vias, we suggest to update to 0.2mm to 
make, can you accept? If yes, we can update for you.

For surface finish, we suggest to update to immersion gold, because to 
make blind vias, HASL is not good.

Look forward to your early reply to proceed, thank you.
2019-10-28
-----------------------------------
Best Regards
*Julia*
Customer Service Executive
Skype: live:julia_4946 (julia at pcbway.com) | Tel:86-571-85396323

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