7 ipc spec for pth location results

Electronics Forum: ipc spec for pth location (Page 1 of 1)

What is a good spec for board warpage?

Electronics Forum | Wed Dec 19 09:23:47 EST 2001 | davef

Bow & twist for bare boards and panels: IPC-A-610 1.5% for PTH only and 0.75% for SMT

I am looking for an IPC spec for intentional PCB warp

Electronics Forum | Mon Dec 22 16:20:03 EST 2014 | warwolf

Basically the contract comes first, then the design drawings then IPC. if your costumer is asking you to bend the PCB then it becomes apart of the design drawings. as for looking for a cover, get it in writing that that's what they want you to do. I

IPC Spec for PTH Hole Size Tolerance

Electronics Forum | Wed Apr 10 11:46:28 EDT 2002 | mlovett

I would like to know the Stated Specification for PTH size tolerances. Or is there a generalised acceptable limit?. We have some PCB's with hole sizes that I consider to be way off what I would deem acceptable, ie Finished hole size should be 0.89mm

IPC Spec for PTH Hole Size Tolerance

Electronics Forum | Wed Apr 10 22:23:48 EDT 2002 | davef

IPC-6012A, 3.4.1 has words to the effect of: Hole size tolerance and hole pattern accuracy shall be as specified in the procurement documentation. Our fab says: Standard Drill Sizes Drill Number ||Hole Size ||Finished Hole Size 70 ||0.028" ||0.02

IPC Spec for PTH Hole Size Tolerance

Electronics Forum | Wed Apr 10 22:24:30 EDT 2002 | davef

Re: A Standard for Electronic Componets Discription

Electronics Forum | Wed Jun 28 16:42:49 EDT 2000 | JAX

Paul, Most of this naming mojo happens during Gerber to Cad translation. If the Gerber software does not have a pre-defined name for a particular foot-print, The user has to supply one. Getting the supplier of the Gerber, or your CAD/CAM group to eli

Re: Board Stress

Electronics Forum | Wed Jan 20 14:21:54 EST 1999 | Dave F

| I need some opinions (And I know everybody has one). | I am mounting a board into a case, after mounting the board | I am loading it with stress in the middle causing it to bend around .030 inch. The board is 4" X 6" and is Bending in the 4" dire