Electronics Forum: coated (Page 2 of 218)

Gold coated spring contacts

Electronics Forum | Tue May 29 20:22:19 EDT 2001 | davef

Well, no fault with your calculations from here. They appear to be correct. [Logic doesn't appear to be off to far off base, either. An epiphany, eh?] As mentioned in an earlier posting on this thread, consider following the recommendations of IP

Gold coated spring contacts

Electronics Forum | Tue May 29 20:26:38 EDT 2001 | davef

I never heard anyone say anything about looking for telecom wear surface spec, what point did I miss? Have you contacted the folk at old Bell Labs [http://www.bell-labs.com Er, whatever they're called now a days?] From a different perspective, we

Gold coated spring contacts

Electronics Forum | Tue May 29 12:35:36 EDT 2001 | genny

Dave, Sorry to drag this out some more. When I saw this thread I realized that we often get PWB's fabricated with a gold plated edge connector tab. However we have not ever given any specs to the fabricator regarding the gold plating - all we say i

Gold coated spring contacts

Electronics Forum | Wed May 30 17:49:49 EDT 2001 | davef

You are correct. IPC wants you to pay for that standard, regardless if you get a hard copy or download it. Generally, it�s pretty boring stuff for production types. [Although, you will recognize some of the goofy things your designers have done to

BGA on conformal coated PCB

Electronics Forum | Fri Feb 13 09:46:51 EST 2004 | roertner

You might want to check int using a BGA underfill material prior to coating.

BGA on conformal coated PCB

Electronics Forum | Fri Feb 13 09:17:11 EST 2004 | Kris

we are worried about the coating not being able to cover underneath the BGA. If the coat is excessive then it would cause CTE issues. Also if anybody has data on 85/85, 1000 hrs after conformal coating of BGA, would appreciate if you guys can share

BGA on conformal coated PCB

Electronics Forum | Thu Feb 12 14:26:22 EST 2004 | Kris

Hi all, We have a PCB without any BGAs on it which goes into harsh environment.We therefore conformal coat it. After assembly the PCBs are expected to withstand "85degc/85%RH for 1000 hours" We now want to add a BGA to the PCB. Does any one have

BGA on conformal coated PCB

Electronics Forum | Thu Feb 12 16:57:52 EST 2004 | blnorman

Why can't you conformally coat the BGA? We do on some of our lines with no adverse affects.

BGA on conformal coated PCB

Electronics Forum | Fri Feb 13 14:50:57 EST 2004 | blnorman

Underfills could improve reliability. If you pick materials right, you could co-cure and underfill and coating.

Re: Boards coated in wax?

Electronics Forum | Mon May 24 09:33:27 EDT 1999 | Herb Pabes

Hey peoples, We are working with the dairy industry out here and they asked us to start reworking all there boards for them. Of course we said yes, hehe. Only we didn't know what them farmers coated them boards with. It turned out to be wax, h


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