Electronics Forum: dull hasl fifnish (Page 1 of 3)

Plating Integrity

Electronics Forum | Fri Jun 17 10:06:13 EDT 2005 | Doug

We have had some experience with the immersion tin. The appearance can be "bright" or "dull". Don't discount the fact that it is "bright" doesn't necessarily make it HASL. Furthermore, I personally have never heard of a board manufacturer "stripping

Fiducial Recognition

Electronics Forum | Tue Jul 03 02:43:20 EDT 2012 | grillomalta

We clean a good number of fiducials, mostly where HASL PCBs are used. Since the pad is not exactly flat, our SONY 1500 MKII reflects the light from what is essentially, a small 'mound'... Many times our operators use an eraser to 'dull' the finish.

Poor reflow over gold plating

Electronics Forum | Wed Jun 29 17:18:41 EDT 2005 | GS*

Very interesting tread, many thanks to all. Matt please, now what does it mean for you? Will your custmer accept dull solder joints or will the plating be changed ? (ie. HASL, ENIG, etc) Tnks and regards GS*

Soldermask Defined BGA Pads

Electronics Forum | Fri Oct 15 17:11:45 EDT 2004 | HOSS

Matt, Had a similar problem with HASL that wasn't fluxed properly during fab. The appearance of the HASL looked dull and/or mottled (sp?). Solder was curled under on the edges where it should have been smoothly joined to the pad. Almost like a pu

Plating Integrity

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

Re: Dull Solder

Electronics Forum | Fri Nov 12 10:00:42 EST 1999 | Dave F

Edmund, following-on from Wolfy: Back in the old days, anyone who could spell "sodder" considered "bright and shiny connections" GOOD and "dull and grainy connections" BAD. Now, "dull and grainy" connections can be either GOOD or BAD, depending on

Gold versus HASL finish

Electronics Forum | Tue Mar 15 09:46:06 EST 2005 | davef

Comments are: * J-STD-001 and A-610 committees have eliminated the requirement that solder joints be "bright and shiny". Certain metallizations (such as gold) can influence the solder joint surface texture, but have no impact of reliability. Reliance

Gold Immersion Solder Joints

Electronics Forum | Sun Jul 05 12:47:44 EDT 1998 | Bruce Carnegie

What should a good gold joint look like? We've run boards for our customers that look kinda dull but seemed to wet properly and the boards fired up just nicely! Should they look nice and shiny like our HASL boards or is "a shiny joint is a good joint

Re: Gold Immersion Solder Joints

Electronics Forum | Thu Jul 09 11:32:16 EDT 1998 | Justin Medernach

What should a good gold joint look like? We've run boards for our customers that look kinda dull but seemed to wet properly and the boards fired up just nicely! Should they look nice and shiny like our HASL boards or is "a shiny joint is a good joi

Re: Gold Immersion Solder Joints

Electronics Forum | Fri Jul 10 14:20:24 EDT 1998 | Bob Willis

Yes bright shiny joints are a myth as many people like dull joints as they are easier to inspect due to reduced reflection of light. The difference you are seeing in the joints is more likly to be a surface effect, flux or just you think its differen

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