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 Sep 20 11:21:48 EDT 2010 | tony1
I have this NiPdAu small QFN packge sizes less than 2x2. I tried to do solderability Dip And Look test and there's always some units no wet on either ground pad and small I/O. Can someone help to explain why is this so difficult to set on this surfac
Electronics Forum | Tue Jan 10 14:44:42 EST 2006 | greg york
Not sure about Sn/Cu/Ni large market share here in Europe as we have a large part of the UK market with SACP0307 alloy 0.3%Ag introduced over Two years ago Also worked against Sn/Cu/Ni alloy with large TV Co and they went with 0.3%Ag due to reliabili
Electronics Forum | Tue Apr 26 05:04:10 EDT 2005 | siverts
Sorry for my blackout, but here it comes: Solder paste: Senju 7100-GRN360-K1MK-VS Sn 95.5 Ag 3.9 Cu 0.6 Solder wire: Kester 24-7040-8834 Sn 96.5 Ag3.5 Regards,
Electronics Forum | Thu Jan 19 23:29:29 EST 2006 | theSaint
I've seen many comments in many threads about the positive attributes of SN100C (apparently mostly by salesmen). However, I have a concern for the higher temps that will be encountered when using SN100C (or Sn/Cu) vs. SAC305 (vs. 63/37), specifica
Electronics Forum | Sat Dec 02 11:35:30 EST 2006 | davef
Best dross remover is to not produce dross. Search the fine SMYnet Archives for previous discussions Dross will not increase signicantly * Another story, that lead-free solders will generate a greater volume of dross than conventional materials, is
Electronics Forum | Tue Jan 03 18:10:56 EST 2006 | slthomas
has anyone used or trialed the SACX from Alpha, > from reportes and studies carried out it seems > that its a go between SAC305 and SN100. Same question re: Kester's K100. Apparently it's a new .6% Cu alloy that they haven't yet begun to market h
Electronics Forum | Wed Feb 28 19:08:30 EST 2007 | Wayne
There is one solder you guy want to consider, that is SCS7 from Asahi. It is Sn Cu & Si, and it is the lowest price at the moment. We had been changing our pot from SAC, then SACX, and recently to SCS7. The result is better than all other solders. I
Electronics Forum | Wed Jul 19 15:14:57 EDT 2006 | cuculi54986@yahoo.com
We have SnCuCo (Cobalt 995) solder from MRI in our solder pot. I'm not the wave master here, but I believe our wave master is pretty satisfied with it. Send an email to cuculi54986@yahoo.com, and I'll forward your email address from there to him.
Electronics Forum | Sun Jun 06 09:20:03 EDT 2004 | michaeljm
My department and I have been working with immersion silver on and off for about four years and we have compiled quite a bit of data for the Alpha and MacDermid immersion silver chemistries. We have not encountered any assembly or storage related is
