Electronics Forum | Fri Nov 07 15:57:56 EST 2003 | Marc Simmel
Are there specifications or recommendations for electro-deposited tin-lead plating thickness on austenitic stainless steel that would provide a shelf life of 1 year? 6 months? Would 2 to 3 microns (78 to 118 micro-inches) 90/10 tin-lead over 1.27 mi
Electronics Forum | Sat Nov 08 10:04:26 EST 2003 | severs
Once you have selected your plating based on electrical and physical requirments, you should know that there is an inexpensive plastic storage packaging developed by Lucent which can keep any platings solderability from degrading for up to 10 years o
Electronics Forum | Thu Dec 12 09:35:45 EST 2002 | Randy Villeneuve
We are using Immersion tin in production. We specify Omikron-plus tin which according to the information is much better in solderability and shelf life than standard immersion tin. I am not having any problems with the finish and we are running it th
Electronics Forum | Wed Jan 04 03:08:12 EST 2023 | msirifat
Hello Stephen, thanks for the advice. We are producing LED TVs & we have a facility for SMT and manual insertion. We are also thinking of changing the board finish from OSP (due to its shorter shelf life) to ENIG/Immersion Tin.
Electronics Forum | Tue Jan 04 15:38:19 EST 2000 | Pat Pepper
Hi everyone: Our company is trying out immersion white tin for fine pitch assembly with what I would call mixed results. Reflow solder looks very good, but wave solder looks somewhat grainy (this may not be a problem in actuality). We had dewettin
Electronics Forum | Mon Aug 28 17:04:52 EDT 2006 | Board House
ImSn - Immersion Tin - Not Recomended- short shelf life ImAg - Immersion Silver - Prefered Surface finsh by most Board houses, Best reworkablility, 12 moth self life, ENIG - Electroless Nickel Immersion Gold - Second Choice for Board Shops, 12 -
Electronics Forum | Thu Mar 24 07:06:06 EST 2005 | davef
There's a lot of comparison tables on the web. Here's one: Properties - Summary [A Winlow Circatex] Attribute||Hasl||Immersion Silver||Immersion Tin||Electroless Pd||OSP||Eless Ni / Imm Au Shelf Life (months)||12||12||12||12||12||6 Multiple Reflows
Electronics Forum | Fri Jul 18 10:46:43 EDT 2003 | davef
If you are saying that you have discolored white tin at in-bound inspection, you have bad boards. The boards are fabricated incorrectly. Your fabricator is deficient. That is the GREAT thing about imm coatings. You can look at them and determine
Electronics Forum | Tue May 02 14:27:43 EDT 2006 | bhall
In the past we have used immersion tin as an alternative for HASL. Our biggest problem was shelf life. The tin oxidized very rapidly. We switched to immersion gold and have had great success.
Electronics Forum | Wed Jan 05 11:11:09 EST 2000 | Dave F
Hey Pat: My responses are: 1. Does anyone have experience with the shelf life on immersion white tin? If so, how long can the boards be stored without adversely affecting solderability. I've heard one year. No, we don�t, because we turn boards fa
