Electronics Forum: aps and gold (Page 1 of 10)

Immersion gold and BGAs

Electronics Forum | Wed Aug 31 12:33:25 EDT 2005 | Jaya

I have expirence running,double sided Imm gold boards recently which ed up a lot of solderability issue. The Imm gold need to be slightly more control during reflow oven area on it's profile.

Immersion gold and BGAs

Electronics Forum | Fri Aug 26 09:48:11 EDT 2005 | David

I have heard that there are problems using immersion gold on PCBs when working with BGAs. Is this correct? Is white tin more suitable?

Immersion gold and BGAs

Electronics Forum | Fri Aug 26 09:57:21 EDT 2005 | russ

The Immersion gold is not a problem with BGAs specifically but "black pad" which can be present anywhere. The unfortunate thing with BGAs is you cannot see it. Personally I hate white tin. It is okay for single sided boards running no-clean, but c

Immersion gold and BGAs

Electronics Forum | Fri Aug 26 14:15:16 EDT 2005 | David

Where could I find more information regarding the double sided reflow and flux problems with white tin?

Immersion gold and BGAs

Electronics Forum | Tue Sep 06 09:30:34 EDT 2005 | russ

I read it in Florida Cir-teks own literature. http://www.florida cirtek.com

soldering and bonding on gold PCB's

Electronics Forum | Wed Jan 09 14:52:53 EST 2002 | Chris

Hi, I have read many articles about theromsonically bonding to soft gold. Many of these articles state you can bond to 10uinches of gold. I have worked with both Hughes and Panasonic bonders at two different companies and I have never been able to

soldering and bonding on gold PCB's

Electronics Forum | Mon Jan 07 20:37:15 EST 2002 | davef

For soldered areas, we like to keep gold thickness substantially below the maximum you propose. Search the fine SMTnet Archives for our discussions on the topic of acceptable levels of gold with solder connections. Let�s fix this �no one seems be s

soldering and bonding on gold PCB's

Electronics Forum | Wed Jan 09 21:19:49 EST 2002 | davef

When I said "In this area, there is no difference between your experience in ceramic substrates and PTFE substrates." I was referring to the area we were discussing ... gold plating. I am sorry if you thought I ment than the wire bonding process wa

soldering and bonding on gold PCB's

Electronics Forum | Mon Jan 07 13:18:28 EST 2002 | mregalia

I work for a microwave company. On our lower frequency boards (

soldering and bonding on gold PCB's

Electronics Forum | Wed Jan 09 15:24:49 EST 2002 | mregalia

Thanks Chris. As I was writing my last message our mailperson dropped off the latest issue of Circuit Assembly. It has an article on mixing SMT and COB on the same board. The author recommends as a compromise 10-20 micro inches of gold over 70-100 of

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