Electronics Forum | Sat Dec 24 08:20:47 EST 2005 | Dhanish
Thanks Dave.What is it in normal SnPb finish?Is it Matte or Bright Tin.
Electronics Forum | Tue Jun 07 21:50:46 EDT 2005 | davef
Most component fabricators don't properly understand the impact of soldering with pure tin solderability protection on components. Here's one that does: "The Effects of Board Attachment Processing on Sn Whisker Formation on Electroplated Matte-Sn on
Electronics Forum | Mon Jan 16 04:29:33 EST 2006 | Rob
No, but Kemet were late in adopting lead free finishes in comparison to the Japanese manufacturers, some of which have been compliant for years. The finish on Kemet Chip Caps is generally Matte Tin, & I have checked with our parent company that sell
Electronics Forum | Tue Aug 17 17:06:43 EDT 2004 | davef
First, we'd like to see your supplier's minimum Sn thickness to be increased to 10um. Look here for support of this position: http://www.psma.com/HTML/FILES/forums/leadfree/hp_ext_pos_sn_for_pbfree.pdf Second, increasing the thickness of tin: * Ra
Electronics Forum | Tue Jan 10 12:17:17 EST 2006 | Rob
Hi, The ROHS compliant parts are usually Matte Tin on the outer terminal plating. There are also 2 further types of metal on the average chip cap - the undercoat metal of the outer electrode & the inner electrode. These are usually the same & are
Electronics Forum | Thu Feb 21 03:25:58 EST 2008 | jlawson
I have seen smt chip varistors with Pd/Ag teminations that had poor wetting in terms of good fillet in LF (sac305) soldering. We found that the solder tended to be attracted to the plating on the part and off the actual pad (silver Immersion). This c
Electronics Forum | Fri Jun 17 10:47:48 EDT 2005 | davef
Doug: We agree that imm tin can be easily stripped and reapplied. Do you order imm tin as bright/ dull? Is bright/dull a function of who the fabricator lisences the process? Er wha? Electroplate tin can be either matt or bright. It is different
Electronics Forum | Fri Jan 20 11:44:40 EST 2006 | Mike Dolbow Atotalgps.com
I have seen 100% Matte Tin plating and a lot of Sn/Ag/Cu plating for gull wing parts. This is the most common type of plating. Also in a lead free process you will see that the very end Toe of the part will not flow. This is due to the metal being cu
Electronics Forum | Wed Dec 21 17:11:47 EST 2005 | Mike Dolbow www.atotalgps.com
Has any one considered the melting eutectic of the plated part verses the eutectic of the paste it self. Inter metallic solids can form when mixing metals. Thus this causes solder joint reliability. Also a lot of vendors are putting out pure tin prod
Electronics Forum | Tue Oct 25 18:58:40 EDT 2005 | davef
Could you be talking about immersion tin?
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