Electronics Forum | Tue Nov 13 09:25:42 EST 2001 | davef
Maybe. While it doesn't help with your current problem, there is nothing that says that you cannot impose requirements in your purchase order that are stricter than D-300.
Electronics Forum | Fri Aug 28 15:39:14 EDT 1998 | smd
Does anyone know about the ANSI/IPC PCB warpage standard? What is the best way to determine weather boards are warped or not? What equipment works best? Or, is there a general rule of thumb that is also compliant with the standard? I would like to he
Electronics Forum | Fri Aug 28 16:24:56 EDT 1998 | Dave F
| Does anyone know about the ANSI/IPC PCB warpage standard? What is the best way to determine weather boards are warped or not? What equipment works best? Or, is there a general rule of thumb that is also compliant with the standard? I would like to
Electronics Forum | Mon Nov 12 13:04:35 EST 2001 | slthomas
We've got a problem with a fine pitch board that has about .005" registration error at each end (towards the center of the board) when it's printed. Apparently we've got a case of board stretch generated at the fab shop. I still have to do some mea
Electronics Forum | Mon Nov 12 17:12:40 EST 2001 | slthomas
Thanks, Dave. Three courtesy cheers for specifications written to reflect the capabilities of the part suppliers, even if they fail to meet the purchaser's (not unreasonable) process req'ts. In the meantime, I'm sure my stencil guy would be more
Electronics Forum | Mon Nov 12 16:14:47 EST 2001 | davef
Yes!!! How can we assemble boards with 20 pitch when we allow 0.008� error to the master art? Excellent question!!! IPC-D-300G has nothing to do with assembler requirements. It is written by and for fabricators, so that they can be comfortable.
Electronics Forum | Fri Apr 16 17:19:59 EDT 1999 | Dave F
| | Hi, | | I just cheesed my previous attempt at this. I looked through IPC 600 and couldn't find anything relating to dimensional stability of a board with regard to stretch. I found bow and twist but nothing on size. I have a PCB that is .030"
Electronics Forum | Wed Aug 22 19:54:54 EDT 2001 | mkallen
Can anyone point me to a relevant IPC spec that specifies an allowable board stretch, measured between metal features on outer layers (e.g., between fiducials and component pads on the topside of a board)? I've got a non-linear stretch problem that'
Electronics Forum | Mon Apr 19 10:14:12 EDT 1999 | Justin Medernach
| | | Hi, | | | I just cheesed my previous attempt at this. I looked through IPC 600 and couldn't find anything relating to dimensional stability of a board with regard to stretch. I found bow and twist but nothing on size. I have a PCB that is .0
Electronics Forum | Wed May 30 12:40:22 EDT 2018 | davef
Drink the Absolut IPC published the Stencil and Misprinted Board Cleaning Handbook (IPC-7526). Free download here: http://shop.ipc.org/IPC-7526-English-D
IPC is the trade association for the printed wiring board and electronics assembly industries.
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