Electronics Forum | Mon Jan 21 18:11:35 EST 2008 | dyoungquist
0.031" radius is a diameter of 0.062" which is very tight (small) for a rounded corner. I would tend to agree with the board house that is can not be done. 0.031" is a standard thickness of PCB. I think it is very possible that your customer swapp
Electronics Forum | Wed Apr 07 17:03:50 EDT 2010 | duchoang
Hi Mabdalla, Attached is my VIOS file. The board dimension in your file is 285.75(L) x 215.90(W) I do not see the board thickness in your file. The dimension in my file is 192.7(L) x 153.67(W) x 1.8(T) Hope this info would help you a little.
Electronics Forum | Wed Jul 21 06:10:33 EDT 2010 | cyber_wolf
Of course the best way is to get a dimensioned tray drawing if possible. The next best way is measure point to point over as many cavities as you can open your calipers up to. Divide the measurement by the number of pockets you spanned. This reduces
Electronics Forum | Thu Apr 11 14:11:10 EDT 2013 | dontfeedphils
If it's using the laser alignment try changing the part type to "SOT" instead of chip, and then enter the dimensions for only the body of the component. The "Chip" setting will measure the part half way down the body, the "SOT" setting will measure
Electronics Forum | Wed Nov 29 00:43:45 EST 2006 | callckq
Dear all, Recently, we run 2 models with heat sink attachment on top of this BGA(on top of this BGA, there is flip chip attached at the center of the BGA). Hence, the center of the BGA is higher than corner/side. We used conventional way to attach
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 | Tue May 03 08:11:02 EDT 2005 | jh0n!
I appreciate the detailed reply. However, I had tried dimensioning the stencil to everything imaginable, including the correct/measured dimensions. Interestingly enough, after loading a new stencil into our adaptor, I had no errors with the new pro
Electronics Forum | Wed Jul 20 13:47:42 EDT 2005 | russ
IPC has this. I cannot remember which one, Here is what I do for a quick reference. square pin - add .015" to the pin dimension e.g. .025" square pin gets a .040" hole. OR if the pins are large get the max dimension )e.g. a .025" square pin has
Electronics Forum | Wed May 31 23:19:15 EDT 2000 | Jackie Hsieh
I think the reasons of the tombstone phenomenon could be concluded as follows: 1.The proper pad size,including the dimension of two pads,the gap of two pads. 2.The temperature distribution must be uniform (take care the shadow-effect) 3.The ramp-up s
Electronics Forum | Tue Nov 09 11:32:32 EST 1999 | Dave F
Wolfgang: "Our desire is to get what we design" ... Wanting to get what you ask for ... ummm sounds like a risky proposition!!! ;-) Two things: 1 Go to the Hadco site and get their "boiler-plate." Use it and some of the Earl Moon specs in the SMTn
