Electronics Forum | Fri Feb 21 20:41:32 EST 2003 | Raul
It is a common knowledge that sulphur and immersion silver finish on a PCB do not go together very well. We are seeing peaks of sulphur on some of our assemblies (with silver finish) and as expected we experience severe difficulties with processing t
Electronics Forum | Fri May 24 07:09:52 EDT 2002 | Andy Hoggan
Teh amount of silver on an immersion silver board won't effect 62/36/2 tin/lead/silver solder, however if the silver on the board is on the thick side and you have a high trace silver content in a 63/37 tin/lead then with the combination of the two y
Electronics Forum | Mon May 13 16:20:10 EDT 2002 | ian
Are you refering to MacDermid Sterling Silver finish or immersion silver in general. We have had enquiries about Sterling Silver from a customer and the blurb I have read looks very good (don't most sales literature). Has anyone tried this finish? O
Electronics Forum | Sat Apr 24 10:43:31 EDT 2010 | davef
Hege: Sounds like this customer is a putz. Ask the putz to sign a release, acknowledging responsibility. Here's a couple more links on imm silver: * http://www.pcbdesignschool.com/wp-content/uploads/2009/08/the-study-measurement-and-prevention-of-t
Electronics Forum | Thu Feb 19 12:35:13 EST 1998 | Earl Moon
| | We are currently investigating alternatives to HASL for circuit boards with 20 mil pitch smt pads and below. If you have experience with this product or simular immersion tin products with respect to manufacturing or assembly I am very interest
Electronics Forum | Wed Jun 21 09:21:37 EDT 2006 | don dawson
I've been building boards for a long time and have never heard of anyone using electrolytic silver. Immersion silver would be 8-18 microinches thick. Plated silver would be significantly thicker (min a couple tenths - .0002" and up). So you may be ab
Electronics Forum | Thu Aug 24 13:20:24 EDT 2000 | Murad Kurwa
One of our divisions is having this problem: - De-wetting on the smt pads and componenent termination on the bottom side after top side procssed through reflow. Board finish is immersion silver. ? Any recommendation on what we should check & verify
Electronics Forum | Tue Jul 25 09:42:52 EDT 2006 | razor9114
Good morning, I got a question regarding Immersion Silver Board Finish. It has been imposed on us by our customer that we must manufacture PCB through the SMT process within 24 hours of breaking the seal on a bag of PCB containing Immersion Silver.
Electronics Forum | Sat Mar 15 09:30:29 EDT 2008 | davef
Unlike other solderability protection, immersion coatings [eg, ImAg, ImSn, OSP, etc] can be reworked by the board fabricator prior to assembly operations. Reasons for selecting immersion are: * Until a supplier can demonstrate that they can turn bla
Electronics Forum | Tue Feb 01 14:21:24 EST 2000 | Dennis VanBuren
We are considering the use of Immersion Silver for a PCB surface finish. We currently use Immersion Gold surface finish, which has served us well. However, recent discussions on the cracking of corner joints on large pin count BGA packages, with the
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