Electronics Forum | Mon Jul 30 12:41:47 EDT 2001 | hinerman
1. Realizing not all PCBs will be warped, but for those that are, the tooling can be set when the board is in contact with the stencil, which will take out some warp. On an MPM, the vacuum box helps to hold the board flat If the warp is more sever
Electronics Forum | Sat Feb 05 05:10:53 EST 2000 | Dean
It would be helpful to have some additional info on your line and process. Lets make some assumptions... Consider: re-tooling costs for your fab supplier. Can your supplier hold the additional tollerences for a larger panel. Can your supplier fab
Electronics Forum | Wed Jan 26 12:48:56 EST 2000 | Wolfgang Busko
What does easy to use mean? From operators view: - simple input menue - precise error messages with suggestions what to check first - trustable feeders - low noise - feederchange possible without stop - automatic pickup-position alignment - safety fe
Electronics Forum | Thu Jan 13 14:16:32 EST 2000 | mike d
Michael, Good afternoon. My experience with the frameless stencils has been less than optimal. I tried the universal stencil system about a year ago and these are my experiences. 1) The stencil manufacturer supplied me with a free frame to try ou
Electronics Forum | Mon Dec 06 04:48:53 EST 1999 | Charles Stringer
Greg This is one of the eternal questions. I have racked my brains over this one in many organisations. If you are a low volume user (as your run size of 100 to 1000 would indicate) then you are likely to loose more taped components from loading and
Electronics Forum | Fri Nov 26 09:13:10 EST 1999 | Wolfgang Busko
Jeff, Ted, Stefano What Stefano is saying sounds reasonable. With entry-level systems its always a struggle to get sufficient results. The operators golden hand is needed. Better controlled advanced dispensing systems should do the work, unluckily I
Electronics Forum | Tue Nov 09 17:12:38 EST 1999 | Dave F
Steve: Addressing your points: 1 FINE PITCH APERTURES Electropolishing Laser Cut Stencils: Laser cut should not requiring polishing. Geesh, how much money do you have for stencils? ;-) Oval Shaped Apertures: Pass. What do you expect to gain f
Electronics Forum | Tue Nov 09 19:45:48 EST 1999 | Steve Thomas
1 Money IS an object, and my boss will be thrilled. The stencil manufacturer recommended ovals to facilitate better release. Seems likely to be true, but whether or not it's necessary I don't know. We have perpendicular walls on these (6 mil) ste
Electronics Forum | Tue Nov 02 16:00:29 EST 1999 | John Thorup
Well...maybe. First you would have to determine what type of trays you have. Conductive, dissipative or non conductive(non static generating). Dissipative would be your best choice. In the charged body model, the sudden discharge through a conduct
Electronics Forum | Wed Nov 10 15:08:18 EST 1999 | John Thorup
I would be afraid to have this kind of basket holding my boards. Yes, in most cases, you would not get damage if the boards were closed inside of a good, metalized (silver colored) ESD protective bag. The problem is that the boards usually have to c
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