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Hi
first i was not familiar whit smart phone myself ..
some one have ask me to control a custom PCB from a smart phone via WI-FI
so what was the best way to handle that ?
for now that wast my idea ..
1-) if PCB module was server whit , so the phone will need to scan and find it network...
Hi i totally agree whit EING
many shop use for HASL cheap solder that contain nickel in the allow (Sn100C ,AS9930NC etc)
and this may pose issue when wix whit SAC305 and some type of flux
but that fall bit out of topic ,so back to endless and point less anything except eagle basing ;-)
or...
Hi Mace
yup but low cost chinese fab dont care of IPC so most of time it just delete the solder mask bethen pin
bib did solder mask not fall in ipc 610 ? anyway i see many low cost shop that remove it even if good footprint was used
opening solder mask permit overcome Fad registration...
Hi Mat
even if i not agree whit Treez point of view ,from a outsider some document was harder to find or not very public
that may good to have some publick list of link and of course somewhere else that in that strange tread ..
but for a newbie that start it have many video on youtube that do...
Hi
it imply that anything fine pitch 0.5mm and down that have wrong pad design
may got to thin solder mask bethen pad , in that case pcb shop may remove it
or let it but so think that it broke ,then it will do solder bridge
that wly PCB designer need to work closely whit it PCB fab and...
Hi
yes solder paste stencil
eee no was not in china ,was in north america just dyslexia + typo + was french speaking ;-)
i actually use Cadstar , previously P-CAD that was really easy to use and intuitive but bit outdated
and need to have good scripting (i program my pick & place from...
Hi
not forgot that it huge volume market that drive the industry
so appel or else have money to do fancy stencil and MTBF for cell phone was not primary concern
QFN was ok but must carefully on footprint design and specially the thermal tab and it associated "past" layer
as for placement...
Hi
the assembly side was also often under estimate ,it have lot to learn on that aspect
i start looking this in deep when someday one of my board have been produce to over 200,000 unit
save 1$ on assembly turn into 200K $ net profit , for fully understand it i start doing small scale...
seriously that go no-were and have no sense
and you bash all cad except eagle on 2 tread at the time ..
here if engineer what to do something relate to cad it come to my desk and simply ask me
and will make it ,or teach it how make. that simple and natural no ? so no one got frustrated
if...
top placement was used for documentation have part outside shape and pad ,that help assembly shop for pick & place
top assembly was also a documentation layer it same as above but may contain also reference designator like C1 ,U2 etc etc
but as it for documentation it may placed on center of...
that one problem many pcb cad user think that it real pcb guy ,and copy datasheet reference design and rely on electrical engineer for tell what do .. and use lot of autorouter for noting ..
the hard thing was not to route all track ,it was to pass certification first time ,and reduce...
HI
made your symbole/footprint start whit pin 1 that mandatory
then on library executive you add your symbole as a "gate" and in "pin view" your remap it as need
for check if it right click on pin number it will highlight symbol pin and footprint pin and gate pin
for see if it match what...
in my shop if pcb guy screw the thing it paid the next pcb run
that effective to not forget again and realise that take 2 hour to re-validate cost less that a pcb run
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