Electronics Forum: aluminum (Page 1 of 36)

aluminum pcb

Electronics Forum | Fri Nov 07 18:26:05 EST 2003 | jsloot

Is anyone using .062 aluminum circuit boards with copper conductors in your production lines? What kind of reflow profile is required? What special considerations are there to be looking for? I am asking for any information you can give me. Thanks

aluminum pcb

Electronics Forum | Wed Nov 12 20:03:49 EST 2003 | davef

We used to do this kind of stuff in vapor, but do none now [although the imagination doesn�t have to turn too much to envision doing it again]. Start here: * http://www.bergquistcompany.com * http://www.gouldelectronics.com

Plating for aluminum wire bonding

Electronics Forum | Mon Mar 03 10:38:28 EST 2003 | davef

Electroplated nickel and electroplated gold is the more �traditional� finish for aluminum wire bonding. That surface was an extension of gold thermosonic wire bonding that requires a thick [50 thou min] gold surface. For years fabricators recommend

Plating for aluminum wire bonding

Electronics Forum | Mon Mar 17 10:36:04 EST 2003 | davef

Ramanandkini 14 gm versus 5 gm: 14 gm [even 10 gm] sounds better than 5 gm. We get good bond pull XBAR (high teens) and low sigma (

Plating for aluminum wire bonding

Electronics Forum | Tue May 13 21:08:24 EDT 2003 | ramanandkini

Dear Sir, Sorry for the delay in reply. This is regarding MIL standard for bond pull strength: MIL-STD-883C dt.25/08/83 Bond strength (destructive bond pull test); refer table-1 Minimum bond strengths for various wire composition & diameter given.

Reflowing large aluminum electro. caps

Electronics Forum | Thu Mar 03 09:29:12 EST 2005 | jdengler

This sounds like you are using a straight ramp profile. For this type of an assembly you may need to use a soak type profile. Most solder paste providers show you both types of profiles that work best with that paste. I would try using that profil

Reflowing large aluminum electro. caps

Electronics Forum | Thu Mar 03 10:59:37 EST 2005 | Rob

Also try boosting the bottom zones up to get extra heat in. Now try this at lead free temperatures & watch them go pop as the air inside expands & vents at the base. O to be in America & be free of our wonderful european decision makers.

Plating for aluminum wire bonding

Electronics Forum | Sun Mar 02 12:16:29 EST 2003 | ramanandkini

Recently, one of our new vendor supplied us PCBs with Electroplated Nickel and Gold. We have the other regular source giving us ENIG plating. In both the wirebonding quality is OK. How do we benchmark this? Which one is suitable for production with l

Plating for aluminum wire bonding

Electronics Forum | Sun Mar 02 17:40:02 EST 2003 | MA/NY DDave

Hi It sounds like you are in a different country or in the USA a long time ago. I have no idea of the process either is using, so they can be comparable or one can be better than another and lop sided compared to other places. Benchmarking I think

Reflowing large aluminum electro. caps

Electronics Forum | Thu Mar 03 08:42:07 EST 2005 | cyber_wolf

I just ran into a reflow profiling problem with a new assembly that we are processing in SMT. There is a cluster of six or so electrolytic caps that measure approx. .710" wide by .660" tall. They are spaced .100" or so apart. When I run a profile, t

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