Electronics Forum | Tue Oct 10 04:10:43 EDT 2000 | Tanu
Hi, Jacko is right!BGA ispection equipment like Xrays are extream expensive if you want a good system. There is some xrays that you can have low cost but if you are planning to do superBGA�s or want better image you need atleast 80-100Kv with good r
Electronics Forum | Thu Oct 05 11:10:23 EDT 2000 | Wolfgang Busko
It�s funny, the third question on this topic via "Georgia tech..." in the last few weeks. Seems on that particular forum people with the same interests are gathering or maybe they are working all on the problem without knowing about each other. Dani
Electronics Forum | Thu Oct 12 11:08:20 EDT 2000 | Fraser
Dave, Why on earth would you want to use a stepped glue stencil?. If you print slightly off contact the hight of your glue deposition will be roughly half the width of your adhesive aperture width so if you want a 10mil high deposit use a 20 mil ape
Electronics Forum | Fri Oct 13 13:44:03 EDT 2000 | Mike McMonagle
You can achieve a wide range of dot heights when stencil printing by using a polyimide stencil along with a .040 snapoff. Loctite has a system for this that they call Varidot, by varying the size of the apertures in combination with the .040 snapoff
Electronics Forum | Sun Oct 01 23:58:55 EDT 2000 | stuartfd
Dear forum types, 1st timer so be good. I have a customer in China using Coates soldermask that in its self is not a problem. The problem is the flux their using, I think,it appears to have a vary high viscosity. The problem they have laid at my door
Electronics Forum | Tue Oct 17 10:53:10 EDT 2000 | Rick James
Regarding your comments about the EASi Line - a robotic workcell was planned but the company determined they were spread too thin to support the effort about 8 weeks before the show. It was too late for a replacement. The manual assembly operation
Electronics Forum | Sat Sep 30 11:59:30 EDT 2000 | jarnopy
Hi! What kind is perfect smt line? It's difficult question. First you must know what kind your production is. Do you have a serial production or do you have a lot of proto series? If you have only few different pcb then you must get placemant machine
Electronics Forum | Thu Sep 28 07:09:01 EDT 2000 | Rich Ziebell
All, We are experiencing extreme difficulties in printing with a water soluble paste. We have tried two major brands of w/s paste and we are seeing the same problems with both. The main issue is the paste is sticking to the blades. We have tried di
Electronics Forum | Wed Sep 27 17:24:08 EDT 2000 | Wolfgang Busko
Ashok: Plating thickness and ductility of the copper are things to look for. If it�s a crack where two layers are pressed together one possible cause could be bad process parameters while pressing these layers together at the PCB shop with the resul
Electronics Forum | Wed Sep 27 13:45:35 EDT 2000 | Bill Schreiber
Dear Dreamsniper, A big hidden cost in any cleaning system is the cost of diminished production and rework. I assume you are cleaning the adhesive stencils manually since there is no equipment cost in your formula. Manual cleaning of adhesive sten
