Electronics Forum | Tue Feb 20 07:31:45 EST 2001 | Nick L
0.076 ~ 0.2 um(micron) but our substrate gold thickness is between 0.3~1.2um. Is there any related to the plating process of substrate! And how can they control this thickness?(May be I should ask substrate vendor their controlling limit). If this i
Electronics Forum | Thu Jan 13 23:31:19 EST 2005 | KEN
Many of the Engineers from Dynapert / Precima went to Philips EMT. You can see many simlarities in feeder and nozzle designs. They (Philips) have a signifficant history in the P&P arena. I have 3 GEM emeralds from 1998 that continue to calibrate at
Electronics Forum | Fri Oct 09 06:32:38 EDT 2009 | davef
Here's what is on that post referred to, not sure what you need more than ... "* Stencil material: metal or plastic, no difference in print, metal is easier to clean, no static problem, available * Stencil thickness: Chips 0.006", SOIC 0.010" [print
Electronics Forum | Mon Dec 17 12:06:58 EST 2007 | pjc
5 Steps to Eliminate Bridges: 1. Establish (wave) Parallelism First and foremost, you must establish board-to-wave parallelism. This is the prerequisite to any wave solder process control. For an understanding of the power of this approach go to ht
Electronics Forum | Thu Dec 08 07:55:16 EST 2005 | davef
Your understanding of the situation is correct. In both cases, you solder to the nickel. The gold [Au] protects the nickel from oxidation. When soldering, the gold moves into solution in the solder and forms an intermetallic compound [IMC] with th
Electronics Forum | Tue Feb 04 22:28:16 EST 2003 | davef
You could reduce the paste by about 70%. Solder balling and tombstoning will be the issues to fight. The drivers to these don't change with the component size. Use the fine SMTnet Archives for background. Aperture Size and Thickness of Solder Pas
Electronics Forum | Tue Dec 14 22:17:33 EST 1999 | Dave F
Armin: How ya doin� bud? CK gives good advice, but I'd like to take a bit of a different angle. Q1. For 0.7 mm (0.027in) diameter hole for vias, what�s the minimum annular ring for this hole diameter? Depends on what you�re trying to do. For in
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