Electronics Forum: bonding and clean (Page 1 of 46)

clean rooms/ wire bonding

Electronics Forum | Mon Mar 07 15:41:50 EST 2005 | John M

Is anyone aware of standards which would identify the clean room requirements for the wire bonding process ?

clean rooms/ wire bonding

Electronics Forum | Mon Mar 07 21:37:42 EST 2005 | ABHI

It depends on your product requirements. I have seen aluminium wire bonding operations in as high as class 100K clean rooms. These are the assembly areas for calculators. The best is class 10K clean room for wire bonding. You can go upto fine pitch w

soldering and bonding on gold PCB's

Electronics Forum | Wed Jan 09 17:14:48 EST 2002 | mregalia

Do you bond with Al or gold wire? What happens if the Ni is over 150 microinches? Thickness of nickel is one those things that we have not been consistent with. The industry seems to pretty much universally call for 100-200 microinches. Our old board

soldering and bonding on gold PCB's

Electronics Forum | Wed Jan 09 17:03:44 EST 2002 | rob_thomas

We follow IPC-2221 recommendations for Au and don't have a problem as long as the Ni is under 150 microinches.This ensures a consistent process for us.Also we do plasma clean after SMt and prior to wirebond.That makes a big difference. Rob

soldering and bonding on gold PCB's

Electronics Forum | Wed Jan 09 18:17:15 EST 2002 | Chris

I don't have a plasma cleaner either. It will help a lot. Actually I don't clean at all. Our wirebond pads are far enough away so the flux residue does not get on the wirebond pads. That's what we think anyway. I am sure we have some degree of c

gold wire bonding

Electronics Forum | Thu Dec 29 10:47:05 EST 2005 | Chris

The paper Dave posted the link for is great. I have to go back and read it in depth. I can build prototypes by wirebonding to ENIG. I can do it on a manual wirebonder but I don't have the patience to do it on a magazine to magazine automatic machi

gold wire bonding

Electronics Forum | Wed Dec 28 16:03:53 EST 2005 | Chris

I have lots of experience with thermosonic gold ball bonding. You can read the literature and you will probably find some papers that say you can do it. I have never been able to do it. We gold ball bond all day long with little problems at all bu

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 | 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 (

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