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I’m sure PCB manufacturing houses have improved a great deal, but in the Bay Area where you’d think no problem we found the best terrible. So many defective boards.
Parts were often difficult to obtain with some 52 week lead times - seriously this changes often.
We ended up going to Samsung’s prototype manufacturing facility where they take in small runs of boards to keep their facility humming along. Less than 500 boards max.
In the end they supplied us PCBs loaded with all glue logic (less our chip) and the landed cost was below blank PCBs. Every board worked! Absolutely an amazing facility. Samsung buys glue logic in the millions so those parts were nearly free, installed.
BTW - They came back with a dozen questions about our Gerber files - all GOOD questions - before they produced anything.
We used them for all prototype and high end low volume boards.
I really should check with them and see their availability as minimums.
On Jan 24, 2018, at 8:54 PM, William R Maxwell <wrmaxwell@...
0805 is a happy
On 25/01/2018 3:20 PM, Jack Purdum via
I can barely see a 0603! I would prefer 1206 if I can find
them and am not too worried about the cost differential.
& Digikey are my go-to for SMT parts.
They carry just about everything. If you
have other oddball SMT stuff, and either
one are out, head to findchips.com
There are alternate suppliers, but those
two always have what I need, either in the
exact specified part number, or an
equivalent. Other places will source
1206's and stuff, but might only sell by
the full reel (which I have yet to need,
except maybe 0.01uF caps or 0.1uF caps
across multiple, multiple projects).
resistors/caps (0603, 5% in my case) are
usually cheap enough that I buy them in
1000-piece quantity, because $2 of parts
for life or $0.5 for the parts I need for
the project, and to always have them on
hand, is easy.
only bought from Digikey a few times but I use
Mouser all the time. Also there are Newark and
Allied for such supplies.
bought a set of 0805 resistors (from 0 ohm through
several Mohms) and a set of 0805 caps (10s of pF
through 1µF). They came on cards that fit a day
planner binder. There are between 1 and four
strips of 25 each for each value (depending on
expected usage levels). I have little trouble
working with 0805 parts and they fit nicely on
.1” grid perfboard (with plated through holes).
use up a strip I buy a new strip of 25 at a local
electronics shop (Silicon Valley still has a few).
haven’t done any PCB fabricating yet but that is
in the plans.
diodes and transistors of most any size are easily
soldered to perfboard.
also soldered up to 8 pin SOICss buy putting
alternate pins on the perfboard pads and tack
soldering leads to the other pins.
definitely makes for smaller boards.