Electronics Forum | Mon Jun 18 21:31:16 EDT 2001 | davef
I know of no nor can I imagine a specification for "spring pressures or the requirement for pin marks on the test pads". The issue is whether the boards pass the test or not. If your supplier neglected to process the boards as agreed upon, then the
Electronics Forum | Sat Aug 04 12:03:25 EDT 2001 | johnw
The reason we're putting the epoxy in at the last process is two fold really. 1. as you suggest putting the componnd down prior to placement is going to cause issues around the placement of the device. But more importantly 2. the material speced by
Electronics Forum | Tue Dec 21 07:18:15 EST 1999 | Nick Harris
Edmund, I agree with Wolfgang there is no reason for 0603s to be falling from the bottom side during the top side reflow. I assume what you are having problems with is a higher mass component like a large tantalum, inductor, or perhaps an active de
Electronics Forum | Tue Sep 07 06:49:18 EDT 1999 | stefano bolleri
| | | I agree SB..Fuji feeders rarely get off that much.Are you using | the Auto-Offset function in your Part data?This will | usually keep your pick on Cp's humming! | YES, always use the auto-offset function in each part data (do you also need t
Electronics Forum | Thu Aug 19 15:10:14 EDT 1999 | Dan
| Does anyone have any experience with EKRA screenprinters? I am looking for a semiauto screenprinter and I came across this brand. My local rep says that they are fairly new in the US, so, it is hard to get opinions on the machine. I am looking a
Electronics Forum | Fri Aug 20 11:06:54 EDT 1999 | John
| | Does anyone have any experience with EKRA screenprinters? I am looking for a semiauto screenprinter and I came across this brand. My local rep says that they are fairly new in the US, so, it is hard to get opinions on the machine. I am looking
Electronics Forum | Tue Aug 17 22:51:32 EDT 1999 | KEVIN SIMPSON
| | Does any one have any idea which is usualy more expensive, to get components on Reels or in Trays ( I mean large components ofcourse). | | What is price diffrence percentage ? | | | | practicaly, is one method is prefered to the other? | | | |
Electronics Forum | Wed Jul 07 13:41:42 EDT 1999 | Dave F
snip | | If you go for plugging be sure you have a protrusion spec that you can live with. This often results in little bumps of epoxy that can interfere with component placement. For us, tenting .015 vias usually gets us about 80% coverage from
Electronics Forum | Fri Apr 16 11:23:26 EDT 1999 | Scott McKee
| | Any recommendations for a reballer for BGA and mBGA? Low volume, low cost appreciated! | | | Dave: I don't believe that reballing BGAs that go into customer products is a good idea. Check with your BGA supplier to determine their recommended
Electronics Forum | Wed Apr 07 11:42:16 EDT 1999 | Tony A
| Tony | | Although I agree in principle with Dean that 45 Degrees would be ideal, most of the squeegees I have worked with have been 60 Degrees to the stencil surface. This seems to work best with metal squeegees when printing HASL boards, because
