Electronics Forum: shelflife (Page 1 of 2)

Surface finishes / shelf-life

Electronics Forum | Wed Jul 07 11:49:34 EDT 2004 | Svensen

Curiously... Shelf-life of the plating alternatives has been mentioned several times as a potential issue in these discussions. Tell me is there a market for a simple plastic packaging which could extend shelf life (and hence solderability) of these

capacitor shelf life

Electronics Forum | Thu Apr 12 20:27:10 EDT 2001 | davef

Tantalum caps degrade over time. You should not be seeing "chipped-off & cracks" regardless of the age. This should not be a shelf-life issue, unless you are storing them in an aquarium. Tell us the story. Solderability is a shelf-life issue and

Re: Control the solder paste

Electronics Forum | Tue Jan 11 05:46:09 EST 2000 | Wolfgang Busko

Hi Dave, that was kind of a more rhetorical question. Normally paste is used before shelflife expires and delivery time is short enough to get in no trouble. The normal situation is that you try to get your equipment running means constant use of pas

Immersion Silver

Electronics Forum | Sun Sep 08 19:40:34 EDT 2002 | dasal

Would you be interested in a chemical free flexible packaging (bag) that extends the useful shelf-life of fabricated pc boards and surface finishes for that year or more? Let me know, and I'll get you all the technical details. Sincerely, Dave S

Re: Component Shelf Life

Electronics Forum | Sun Sep 08 18:59:12 EDT 2002 | dasal

Component distributors now have access to a simple technical packaging which can actually eliminate shelf-life and corrosion without the use of chemicals. Why it's remained such a secret till now is beyond me, but its something I'd like help to sprea

Criteria for storing finished SMT assemblies, shelf-life?

Electronics Forum | Thu Sep 11 14:20:07 EDT 2008 | pcbrown57

Is there any criteria or limitations for SMT pcba's? We have boards in stock that we built and a customer wants to know what our procedure is for "storing" these boards which will have a few through-hole modules soldered to them after they get pulled

Criteria for storing finished SMT assemblies, shelf-life?

Electronics Forum | Fri Sep 12 08:01:55 EDT 2008 | davef

There is no standard. On the web, you can find shelf life estimates for various types of solderability protection on bare boards. These estimates won't translate directly to the storage of assembled boards, because assembled boards [and the solderabi

Solder Paste

Electronics Forum | Thu Jul 19 22:52:43 EDT 2001 | davef

Most paste manufacturers talk about a 12 month shelf life for paste. They give the user half of that time. The remainder is used-up in processing and distribution. We'd give it a shot. You paste supplier should be able to give you a much clearer

Solution Testing

Electronics Forum | Mon Oct 27 22:05:29 EST 2003 | Mike Konrad

Prozone was sold primarily in Europe by Multicore (now Loctite). A brief search of their site seems to indicate that the product no longer exists. As for Prozone, as I recall, it was a ready-mix (no dilution required) chemical. If the containers w

Stencil / Pad design

Electronics Forum | Mon Jun 28 10:17:44 EDT 2004 | davef

People like flat surfaces for placing and reflowing certain components, like fine pitch devices. Some board suppliers can supply HASL that is flat and well controlled from an amount of material stand-point. Unlike OSP, HASL has a wonderful shelf-li

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