Electronics Forum | Wed Jul 21 01:24:06 EDT 1999 | Scott McKee
| I recently switched from solder paste in 500 gram jars to 500 gram tubes. I did this to try to limit the time the paste is exposed to the room environment. But we have a need to clean the stencil every 4 - 5 boards which means taking the bulk paste
Electronics Forum | Mon Jul 12 14:30:37 EDT 1999 | Earl Moon
| Hi all , | | We are trying to implement the micro-BGA technology at our plant. I need the clarification to the following points: | | 1. Is underfill required for micro-BGAs? | | 2. What type of stencil apertures are the industry standards for uB
Electronics Forum | Tue Jul 13 13:28:18 EDT 1999 | Upinder Singh
| | Hi all , | | | | We are trying to implement the micro-BGA technology at our plant. I need the clarification to the following points: | | | | 1. Is underfill required for micro-BGAs? | | | | 2. What type of stencil apertures are the industry st
Electronics Forum | Mon Apr 26 09:06:41 EDT 1999 | Murray Pulman
Help Guys!! We sub con assemble small to medium batch runs of mixed tech boards inc fine pitch BGA o4o2 etc. As usual we get all the crap to build that no-one else wants, however lately some customers are getting a little more serious with their sa
Electronics Forum | Fri Apr 16 12:05:58 EDT 1999 | Wade Oberle
| I've just come back from Nepcon West and I'm just as confused about AOI as when I left. Is anyone out there really happy with their equipment and getting the results they expected? I would like to know about programming time and equipment reliabili
Electronics Forum | Tue Mar 23 20:05:54 EST 1999 | Russell Bartley
| There is a company in houston named BP Microsystems. I have seen their website, but was hopeing someone else might be able to tell me a little more about the company. Thanks.. | Alex, Heres what I know from my personal experience of interfacing
Electronics Forum | Thu Jan 28 14:10:57 EST 1999 | Tom B
Hello Netters, I need some info, Earl or Dave, I have a PCB that exhibits a white layer on solder side. It does not appear to be surface residues (IPA has no effect), but looks like its under solder mask. My first guess is that the LPI solder mask
Electronics Forum | Thu Jan 28 15:43:16 EST 1999 | Dave F
| Hello Netters, | | I need some info, Earl or Dave, I have a PCB that exhibits a white layer on solder side. It does not appear to be surface residues (IPA has no effect), but looks like its under solder mask. My first guess is that the LPI solde
Electronics Forum | Wed Jul 15 12:22:57 EDT 1998 | Steve Moore
Electropolishing definitely improves the print characteristics of both Laser-cut and Chem-etch stencils. The caveat here is avoid over polishing which results in rounding of the edges and/or enlargement of the openings. Over polishing is typically th
Electronics Forum | Wed Aug 08 15:31:30 EDT 2001 | johnw
Hi folk's, I'm looking for some hint's here. Got a board from the customner that is ceramic, and it's 2.2mm thick. I've got a couple of RF connectors that I need to solder, problem is I can't get any flow up the PTH's. The pin's are gold on the conn
