Electronics Forum: shelf life for pcb (Page 7 of 16)

looking for HASL TIN thickness specification

Electronics Forum | Wed Sep 03 16:59:13 EDT 2008 | glennster

At a former employer we required HASL thicknes to be a minimum of 0.75 micron (30 microinches), as measured at the thinnest point on any given pad. This would generally assure a minimum 1 year solderability shelf life. Usually when we saw a soldera

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

Minimum Tg for LeadFree board.

Electronics Forum | Sun Aug 23 11:30:51 EDT 2009 | ysutariya

I think you're getting steered in the wrong direction, with the exception of DaveF's link. By the way, I'm a PCB fabricator, just to avoid any backlash. IPC 4101 is the IPC guideline for raw materials. It has 6 slash sheets for lead-free capable

Help with resources for SMT assembly

Electronics Forum | Sun Jul 26 07:09:25 EDT 2015 | orbitcoms

Thank you for your prompt response. The boards we have made for us current are Immersed Gold treated because we have been hand soldering and needed flat finish that would solder ok without tarnishing too quickly. I will take a look at the link you pr

AOI Inspection equipment for populated PCB's

Electronics Forum | Wed Dec 17 07:46:29 EST 2008 | bejingaf

Hello! I have same feeling that if you would put best things together into one machine than you would get almost perfect one. But I think that I have that feeling by each machine purchase so life is not so easy with that. Regards! Danilo

Re: Cleaning procedures for Entek-Plus Cu-106A

Electronics Forum | Mon Apr 26 11:04:53 EDT 1999 | Dave F

| | Earl said, in essence: | | | | | Justin is absolutely right ... | | | | | | Again, Entek is not much more than a flux coating ... | | | | | | Metallic coatings protect best, as we all know - especially those electroplated. Those coatings chemi

Carbon Ink vs Immersion Gold for key pads.

Electronics Forum | Wed May 03 15:56:25 EDT 2006 | Board House

Hi Patrick, Thank you for the info, We like to push ENIG, for us being the ENIG line is in house it is cheaper to use than the carbon, plus shelf life of the Carbon is an issue in Storage. Pre-application. Thanks again, Mike

Re: Cleaning procedures for Entek-Plus Cu-106A

Electronics Forum | Mon Apr 26 17:45:26 EDT 1999 | Earl Moon

| | | Earl said, in essence: | | | | | | | Justin is absolutely right ... | | | | | | | | Again, Entek is not much more than a flux coating ... | | | | | | | | Metallic coatings protect best, as we all know - especially those electroplated. Those

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

Can an Expired OSP PCB more than 1 year be reworked to extend Shelf Life

Electronics Forum | Tue Dec 12 19:57:56 EST 2017 | myke03o

Hi Experts. We have an expired OSP pcb and we wanted to extend the shelp life. Is it possible to rework the PCB by removing the OSP coating, micro etching and re-applying OSP finish. Any advice if this can be done? Any solution for this OSP pcb e


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