EEVblog Electronics Community Forum
Electronics => Manufacturing & Assembly => Topic started by: yanir on January 31, 2012, 08:30:47 pm
-
Has anyone ever heard of a PCB fab house requesting the schematic of a design as standard practice for PCB manufacturing in any circumstance?
-
Where did you find such a dodgy manufacturer? Just for fun, send them an email asking to sign an NDA and see what happens :D
-
Where did you find such a dodgy manufacturer? Just for fun, send them an email asking to sign an NDA and see what happens :D
Lemme guess: in PRC?
-
Nope. My spidey sense tells me you are being swindled...
Dave.
-
I can't get into details. but someone told me that was common practice and used it as an excuse for a "problem" that occurred.
No chance this is done for high complexity boards? (not that mine is)
-
Unlikely but not inconcievable that it may be helpful for bare-board test.
Obviously if they are populating, testing and faultfinding then they would want a schematic.
-
Unlikely but not inconcievable that it may be helpful for bare-board test.
Obviously if they are populating, testing and faultfinding then they would want a schematic.
Yes, if they are doing all that it makes sense, but for PCB fab only it I've never been asked for one in other situations.
-
I did once see a reference to performing flying probe testing of multi-layer HDI boards against the schematic net list so it does exist, but it's certainly not common...
-
So it seems that it would make sense under certain circumstances, but normally not needed. Sounds more like it would be by request only and not standard practice.
Would people agree?
-
For bare board testing, one could supply an IPC-D365A netlist for test purposes. Schematic is not necessary.
Regards, Janne
-
So it seems that it would make sense under certain circumstances, but normally not needed. Sounds more like it would be by request only and not standard practice.
Would people agree?
Yep, exactly.
Just tell them no. They can have a netlist if they need it.
Dave.
-
If they get difficult, send them a schematic, but change all the parts. Make every resistor a 1 ohm 0.01% value, and change all the ic part numbers to a NE555. All of the capacitors can become inductors.
Richard
-
If they get difficult, send them a schematic, but change all the parts. Make every resistor a 1 ohm 0.01% value, and change all the ic part numbers to a NE555. All of the capacitors can become inductors.
you are so willing to entertain your fab house with this kind of hardwork ;)
i will just ask why if its so difficult testing the pcb, tell them just use the gerber you id**t!
-
If they get difficult, send them a schematic, but change all the parts. Make every resistor a 1 ohm 0.01% value, and change all the ic part numbers to a NE555. All of the capacitors can become inductors.
Nice!
Make it subtle to leave them guessing...
Dave.
-
You could tell them to download it off the Internet. Seems everything else is there these days :)
-
we never ask Schematic for fab, it's no needed, just ask your manufacturer why need it.
PCBCORE
Rachel
-
That's like a plumber wanting to know what kind of wood you used to build your walls. I wouldn't be comfortable if they asked me that. Be careful.
-
Yeah it didn't make sense to me either.
-
That's more like a plumber wanting to know the code to your combination lock.
-
That's more like a plumber wanting to know the code to your combination lock.
That's a better analogy ;).
-
it only needs gerber files transfered by your disgn software. it's okay. No schematic.
you know gerber file? which is individual pattern layer, like conductor, soldermask, silksceen, outline, nc-drill...etc.
-
I had a local assembly house (USA) ask for a schematic for a project I was having assembled. I kind of questioned their skills and they later admitted that they would be hand assembling everything, not using a pick and place like I requested. Asking for a schematic screamed sketchy business to me then, and still does now.