Electronics Forum | Mon May 14 17:12:20 EDT 2001 | davef
Continuing along the path that Brian took ... IPC-7525 gives design guideline for stepped stencils. It goes something like: * Stepped area SB GT 25 thou from pads located on the greatest thickness of the stencil * Pads in stepped area SB GT 35 tho
Electronics Forum | Mon Apr 26 16:14:08 EDT 1999 | John W
| Hi Murray! | | Justin pretty much summed things up...covered all the points. So I'm just gonna give you my preference of what I like other than HASL finish. | | Electroless Nickle/Immersion Gold...nice flat pads...hmmmmmmm, Steve likes flat pads.
Electronics Forum | Mon Apr 05 08:25:31 EDT 1999 | ADRIANO FERNANDES
| | | I require some feed back from any one who knows about using a voc free flux in a nitrogen wave solder machine soldering both through hle and smt componants. | | | What disadvantages are there when using this flux? | | | Do you have any contact
Electronics Forum | Thu Feb 18 22:49:49 EST 1999 | Chris G.
| We are using .040" diameter fiducials (global and local) on our boards. They are solder covered and HASL. I get batches of boards where the p&p vision system has trouble reading the fiducial. The fiducial looks dark on the screen. The board ven
Electronics Forum | Mon Sep 06 10:21:10 EDT 2004 | pioneertechnology
Hi All We have been manufacturing lead free in the UK for about two years now in a fashion. Let me expalin. Two years ago we began to change over our wave solder machines to lead free process. We read all the articles and attended the seminars on
Electronics Forum | Wed Jan 11 22:47:31 EST 2006 | davef
We didn't intend to light anyone's fur on fire [get anyone's underwear in a knot, roil the waters, have a cow man] about consultants. The Phil Zarrow wrote a useful paper that could help in evaluating paste. Here read it ... Evaluating Solder Paste
Electronics Forum | Thu May 26 08:52:42 EDT 2011 | davef
Phil Zarrow wrote a useful paper that could help in evaluating paste. Here read it ... Evaluating Solder Paste � Not An Option Contributed by Phil Zarrow of ITM an Independent SMT consulting firm With soldering being the dominant source of assembly
Electronics Forum | Thu Dec 24 08:44:25 EST 1998 | Earl Moon
| | | | Folk's, | | | | I'm in need of some help / direction. I'm working on my thesis for a masters based on looking at the effect's of the solder resist promoting / reducing the amount of solder ball's during wave. I'm looking at thing's like colou
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